check engine PORSCHE 944 1987 1.G Owners Manual

INDEX
A
ABS Acceleration diagram Accelerator pedal Air Bag System Air - cleaner
- conditioner
- filter
Alternator warning light Antifreeze Antilock, Brake system Anti-theft alarm Ashtray Automatic- garage door
- speed control
- transmission
- transmission fluid B
Battery
Boost pressure gauge
Brake - booster
- fluid
- fluid warning light
- pads
- parking
- pedal
- system
- warning light
Break-in hints
Bulb replacing
Buzzer 28,39
118-129
55
20, 21, 38, 3980, 8144-4680,81 39
74,75,11028, 39
11
42, 98
25
29
53-55
78,110,128
90-9234
27
39,79,11039
27,37,47,79,80 26
26, 27
26,27,11537
47
93-98
10,18,24,30
C/D
CASIS
Capacities
Car care instructions
Casis
Catalytic Converter
Cautions
Central locking
Central warning light
Cigarette lighter
Cleaning
Clock
Clutch pedal
Collapsible spare tire
Control warning light system
Coolant Temperature Gauge
Cooling system
Corrosion prevention
Dashboard
Defogging/defrosting
Dimensions
Doors
Driving hints
E/F
Electrical system
Emergency- flasher
- starting
Emission Control System
Engine - cooling
- exhaust
- hood
- number
- oil checking & changing
- oil
-speed, max 35
110
61-66
35
50,10267
13
37
41
61-66 40
27
85
36-39 36
74-77
65-66
24
44-46 114
12,138-9, 48, 49
89-92
41
92
100-103 74-77
48
586
69-72
69,110,111,128
34,47,52,106-
108
Fan control switch knob
Fan, radiator
Filling capacities
Fog lights
Fuel - economy
- evaporation control
- gauge
- recommendation
- tank
Fuses and relays
G/H
Gas Station Information
Gasohol
Gasoline
Gear ratio diagram
Gearshift lever
Glove compartment
Hatchback
Headlights
Headlight- dimmer
- flasher
- switch
- washing system
Heater/ventilation controls
Hood - front
- rear
Horn
I/J
Ignition/steering lock
Instrument illumination
Instruments
Interior ligh 44
36, 74 110
30, 96, 97
49
103 37
50, 51
50,110
89,126
126-129 51
50,51
122-125 52-55
42
56
30,95,99 30
30
30
31,32,81,11044-4658
56,57
21,24
24
30
33-40
43, 98
4

Jack
- supports
K/L
Keys
Kickdown
Lane changer
Leather
License plate light
Light switch
Lights - ashtray
- fog
- interior
- license plate
- parking
- turn signal
Locks - doors, wheels
Loudspeakers
Lubricants
Luggage compartment
M/O
Manual transmission
- oil
Mirrors
Oil- change
- consumption
- filter changing
- pressure gauge
- pressure warning light
Octane rating
Oxygen Sensor
P/R
Paint code number 68
87, 88, 129
10-11,86 55
30
65
98
30
98
30, 96, 97
43, 9898
30, 37, 93, 94
30,93,94
10-13, 86 89
110,111 57
52,122-125 77,11022,43
71,72
47, 69
71, 72 38
38
50, 51,106-108 101,102
7
Parking- brake
- lights
Performance
Power assisted steering
Power train
Power windows
Prop-up roof
Radiator fan
Rear - hood
- view mirrors
- window defogger
- wiper
Recirculation Switch
Refrigerant
Relays
Rims
Roof racks
Roof, removable S
Safe driving hints
Safetybelts
Safety belt warning light
Safety compliance sticker
Seat heating System
Seats
Sekuriflex windshield
Shift indicator
Shift points
Side marker lights
Ski racks
Snow- chains
- tires
Spare tire, collapsible
Spark plugs
Specifications, engine
26, 3730,37,93,94116731091259, 6036, 7456,572241424446,11089,12664,112,11357,11459, 60
8-9
17-21,6518,3771514-1631, 63, 643552-559457,11483, 84,112,113
83,84, 111,113
85106-108106-109
Speedometer
Starting procedures
Sun visors
T/U
Tachometer
Technical data
Tirepressure
Tires
Tool kit
Trip odometer
Transmission oil
Trunk
Turn signal lights
Undercoating
Unleaded fuel
V/W
Vehicle identification
Ventilation
Voltmeter
Warning/indicator lights
Washer reservoir
Washing
Water temperature gauge
Weatherstrips
Weights
Wheel alignment
Wheel nuts, lockable
Wheels
Wheel changing
Windows
Windshield- washer reservoir
- wiper/washer lever 3324, 2543
34, 35105-12582,112,113,12947,82-87,112,113683377, 78,11056,5730, 37, 93, 9465, 66,10050, 51,106-108,110
6-744-463835-4081,11061-6636641141158647,64,82-87,11285-8812,63,6481,11031
5

Dear Porsche Owner Before going on a trip...
A lot has gone into the manufacture of your Porsche, including advanced engineering
techniques, rigid quality control and
demanding inspections. These engineering
and safety features will be enhanced by
you... the safe driver...
who knows his car and all controls who maintains his vehicle properly who uses his driving skills wisely, and who always drives within his own capabilities and
his level of familiarity with his vehicle.
You will find helpful hints in this manual on
how to perform most of the checks listed on
these pages. If in doubt, have these checks
performed by your Porsche dealer.
First things first
Turn the engine off before you attempt any
checks or repairs of the vehicle.
Be sure tires are inflated correctly. Check for
damage and tire wear.
See that wheel bolts are properly tightened
and not loose or missing.
Check engine oil level, add if necessary.
Make it a habit to have engine oil checked
with every fuel filling. Check coolant level to assure sufficient
engine cooling.
Be sure you have a well charged battery. Check brake fluid level. If too low, have
brake system checked.
Replenish windshield washer fluid. Check if engine hood is latched safely. Replace worn or cracked wiper blades. See that all windows are clear and
unobstructed.
Keep air intake slots and area between engine hood and windshield free of snow and ice, so that the heater and the windshield wipers work properly.
Check whether all light lenses are clean.
Be sure all lights are working and headlights
are aimed correctly.
Check under vehicle for leaks. Be sure all luggage is stowed securely.
Emergency equipment 3
It is good practice to carry emergency
equipment in your vehicle. Some of the things
you should have are: window scraper, snow
brush, container or bag of sand or salt,
emergency light, small shovel, first-
aid kit, etc.

8

In the driver's seat... On the road...
Check operation of horn.
Position seat for easy reach of controls. Adjust inside and outside rear view mirrors. Attach your safety belts. Check operation of foot and parking brakes. Check all warning and indicator lights when
starting the engine.
NEVER leave car idling unattended. Lock doors from inside, especially with
children in the car.
To prevent inadvertent opening of doors
from inside or outside, drive with locked
doors.

Never drive after you have consumed
alcohol.
Always have your safety belt attached. Always drive defensively. Expect the unexpected. Use signals to indicate turns and lane
changes.
Turn on headlights at dusk. Always keep a safe distance from the vehicle in front of you, depending on traffic, road and weather conditions. Reduce speed at night and during inclement weather.
Driving in wet weather requires caution and
reduced speeds, particularly on roads with
standing water, as the handling characteristics of the vehicle may be impaired due to tire
aquaplaning.
Also, when crossing stretches of deeper water there is a danger that too high of a speed can
cause water to enter the engine combustion
chambers through the intake air system
and/or water may strike the cooling fan
causing cooling system damage. In order to
avoid possible en- gine or cooling system damage when driving
through deep water, the vehicle should be
driven at a walking speed in first gear.
Observe speed limits and obey road signs.
When tired, get well off the road, stop and
take a rest. Turn the engine off. Do not sit in
the vehicle with engine idling. See
WARNINGS on "Engine Exhaust".
When parked, always set the parking brake.
Move the selector lever to "P" (Automatic
transmission) or move the gearshift lever to
reverse or first gear (Manual transmission).
On hills also turn the wheels toward the curb.
When emergency repairs become necessary, move the vehicle well off the road. Turn on
emergency flasher and use other warning
devices to alert other motorists. Do not park
or operate the vehicle in areas where the hot
exhaust system may come in contact with dry grass, brush, fuel spill or other flammable
material.
Make it a habit to have the engine oil
checked with every fuel filling.
9

Ignition/Starter Switch with Steering Lock
The steering is equipped with an anti-theft
ignition lock.
Switch positions
0
The steering is blocked by the steering lock: all circuits wired through the ignition
are switched off.
The ignition key can only be withdrawn in the
"0" position. The parking lights can be
operated in this position by pushing the turn
signal indicator lever up and down (also see
"Parking lights").
1 Position for radio. Steering unlocked. If it is difficult to turn the key, gently move the
steering wheel until the key turns freely.
Note: all circuits which are disconnected in
position "3" can be switched on.
To conserve battery power, switch off other
electrical consumers while playing radio in
position "1".
2
Ignition on. All electric circuits are
operational. With the engine stationary, the
central warning light and all individual
warning lights located in both combination
instruments will light up for a bulb check.
3
The starter is operated by turning the
ignition key to the right. As soon as the
engine starts, release the key. It will spring
back to position "2". With the engine
running, the central and individual warning
lights should go out (see "Central warning
light").
To conserve battery power, the electric
circuits for headlights, rear window de-
fogger/defroster, temperature control and
wiper/washer system are temporarily interrupted during the starting process.
The starter should not be operated for more
than 10 to 15 seconds at a time. If the engine
does not start the first time or stalls at any
time, the ignition key must be returned to the
"0" position. The non-repeat lock in the switch
prevents the
starter from being operated when the engine is running and guards against
starter damage.
To remove the key and to lock the steering
wheel
, turn the key back to position "0" and
pull out. Turn the steering wheel until it locks.

WARNING
Never remove key from ignition lock or
turn key off while vehicle is moving. The
steering wheel will lock, causing loss of
control.
Instrument panel lights
Warning lights for alternator, oil pressure, and
brake system will light up for a bulb check
when the ignition is turned on. They should go out after the engine is started. The brake
warning light will go out after the parking
brake has been fully released. See
"Warning lights" for more details.
Buzzer
If you leave the key in the ignition/steering
lock, the buzzer will sound when the driver's
door is opened. This is a reminder to remove
the key.
For further details see "Starting Procedures"
on the following page.

24

Starting Procedures

WARNING
Fasten safety belts before driving.
Never start or let the engine run in an enclosed, unventilated area. Exhaust
fumes from the engine contain carbon
monoxide, which is a colorless and
odorless gas. Carbon monoxide can be
fatal if inhaled.

Never leave engine idling unattended. An unattended vehicle with a running engine
is potentially hazardous.
Do not park or operate the vehicle in areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other flammable material.
Never leave engine idling. When starting engine, be ready to drive immediately.
Maintain moderate speed until engine is
warm.

Automatic Transmission - Start with selec-
tor lever in Park.
Manual Transmission - Start with gearshift
lever in Neutral.
Temperature sensors on the engine auto- matically provide the correct fuel/air mixture
required for starting.
Therefore, do not depress the accelerator
pedal while starting a cold or a warm engine.
When starting at very low outside
temperatures , fully depress the clutch pedal,
so that the starter only has to crank the
engine.
As soon as the engine starts, release the ignition key.
If the engine fails to start after 10 to 15
seconds of cranking, wait about 10
seconds before engaging starter again.
Do not let engine idle to warm it up. After
starting, drive vehicle at moderate speeds and with gradual accelerations. Avoid high rpm
and full throttle operation until the engine has
reached normal operating temperature.
Stopping engine
Turn key back to position 0.
Do not stop engine immediately after hard
or extended driving. Keep engine running
at increased idle for about two minutes to
prevent excessive heat buildup before
turning off engine.
WARNING
Before you check anything in the engine compartment, let the engine cool down.
Hot components can burn skin on
contact.

The radiator fan switches on automatically when the coolant reaches a
certain temperature and continues to run
(even with ignition off) until the coolant
temperature drops. Therefore, never
touch the fan blades as they will rotate
spontaneously when the thermoswitch
turns the fan on.

If you have an automatic garage door...
The transistorized ignition system in your
Porsche may interfere with your electronically
operated garage door. To check this: drive
your Porsche close to the garage door and
run the engine at different speeds.
If the garage door opens or closes without
your operating the garage door unit in your
car, contact the dealer who installed the
automatic garage door to have the frequency
and/or coding of the garage door signal
modified.
25

The brake warning light on the dashboard will go out after the engine is started and the
parking brake is fully released.
WARNING
Release the parking brake fully. A partially engaged brake will overheat the rear
brakes, reduce their effectiveness and
cause excessive wear.
Always set the parking brake when parking your car. Move the selector lever
to "P" (Automatic transmission) or move
the gearshift lever to reverse or first gear
(Manual transmission). On hills also turn
the wheels toward the curb.

WARNING Failure of one brake circuit will impair the
braking capability resulting in an
increased stopping distance.
If one brake circuit has failed, the other will
still operate. However, you will notice an
increased pedal travel when you step on the
brake. Should you encounter such
experience, bring your vehicle safely to a full
stop.
Avoid driving the vehicle and instead have it towed to the nearest authorized Porsche
dealer.

Brake Pedal

Parking Brake Lever
Parking brake force is mechanically trans-
ferred to the rear wheels by means of cables.
Use the parking brake only after the vehicle
has come to a full stop.
To set parking brake,
pull the lever all the way up (arrow). With the ignition on, the brake warning light will come
on.
To release the parking brake,
pull the lever slightly up as you depress the
release button, and then push the lever all
the way down.

Brakes

Functioning of brake system
Your Porsche is equipped with a power
assisted hydraulic dual circuit brake system
with disc brakes at the front and at the rear. Both circuits function independently. One
brake circuit operates the front and the other
the rear axle.
In the unlikely event of hydraulic failure of
one circuit, push the brake pedal down
firmly and hold it in that position. A
mechanical linkage activates the second
circuit, and you will be able to bring the
vehicle to a stop.
WARNING
The movement of the brake pedal must never be obstructed by a floor mat or any
other object. In case one of the two brake
circuits fails, increased pedal travel is
required to bring your vehicle to a full
stop.

Make sure that the size of your floor mat does not hamper the movements of either brake, clutch or accelerator pedals in any
way.
Secure the floor mat against sliding into positions that could interfere with the
safe operation of your vehicle.
Do not "ride the brakes" by resting your foot on the pedal when not intending to
brake. Overheating and premature wear
of the brakes will result.
26

Before descending a steep grade, reduce
speed and shift transmission into a lower
gear or driving position to control speed. Do
not ride the brakes or hold pedal down too
long or too often. This could cause the
brakes to get hot and not function properly.

Brake operation and brake warning light
Make it a habit to check the operation of your
brakes before driving. The failure of a brake
circuit is indicated by the lighting up of the
dual-circuit brake indicator lamp. See also
brake fluid warning lamp.
With correctly adjusted brakes the pedal travel to the point of brake actuation should be
13/16" to 19/16" (30 to 40 mm). Whenever the brake pedal travel is greater, have the brake
system checked.
Keep in mind that the braking distance
increases very rapidly as the speed increases. At 60 mph/100 km/h, for example, it is not twice but four times longer than at 30 mph/ 50
km/h. Tire traction is also less effective when
the roads are wet and slippery. Therefore,
keep a safe distance from the car in front of
you.

Brake Booster The brake booster assists braking only
when the engine is running. When the car is moving while the engine is not running, or if
the brake booster is defective, more pressure
on the brake pedal is required to bring the car
to a halt.
Moisture or road salt on brakes affects
braking
WARNING
Driving through water may reduce tire
traction. Moisture on brakes from road
water, car wash, or coating of road salt
may affect braking efficiency. Cautiously
apply brakes to test them after being
exposed to such conditions. When the
vehicle is driven on salted roads for
extended periods, the brakes should be
hosed down thoroughly about every 2
weeks. An automatic car-wash facility
cannot do this job properly. Brakes will dry after a few cautious brake applications.
Brake wear
Our automobiles have excellent brakes, but
they are still subject to wear, depending on
how the brakes are used. Have the brake
system inspected at the intervals
recommended in your Warranty &
Maintenance booklet.

New brake pads or linings Brake pads or
linings may not have the highest possible
braking efficiency when new. Therefore allow
for longer braking distance during the initial
100 to 150 miles or 150 to 250 kilometers of
normal city driving; longer if fewer stops are
realized.
Clutch Pedal
Due to the hydraulic operation of the clutch,
pedal play should be 0.1" or 2.5 mm.
To check the play, depress the clutch pedal.
Excessive play or tightness indicate a
malfunction of the clutch. Both conditions can
lead to severe damage. Contact your Po
rsche dealer promptly to have the cause located and corrected. Always depress the clutch pedal fully when changing gears. Do not hold the car on a
steep hill with the clutch pedal partially
depressed. This will cause premature wear or
damage.

27

Left Instrument Cluster
The left instrument cluster includes the
coolant temperature and fuel gauges as well
as warning lights for coolant temperature, fuel
reserve, brake-
lining wear, safety belt, parking light and parking brake. The two arrows at the
top are turn signal indicators for vehicles with
trailer coupling.
Coolant temperature

Indicator
Needle in lower field - engine is cold
Avoid high speeds and high engine rpm. During cold engine operation, engine
response and power levels will vary from that
of a warm engine. Due caution and notice of
these engine characteristics will ensure safe
operation of the vehicle.
Needle in center field - normal

Under normal driving conditions, needle
should remain in center field. The needle may
reach the upper field, especially at high
engine loads, but should return to "normal"
when engine load is reduced.

Needle in upper field - warning
If needle enters the upper field the engine is
overheating the warning light comes on.
Reduce speed and engine rpm. The needle
should return to the center field and the
indicator light goes out.
If the needle does not return to the center
field, and the indicator light does not go out,
the radiator fan may not be working to
provide sufficient engine cooling. Pull off the
road and turn off the engine. The fan should
still be running for a while. Failure to do so
may result in severe damage to the engine.
WARNING
Before you check anything in the engine compartment, let the engine cool down.
Hot components can burn skin on
contact. The radiator fan switches on automatically when the coolant reaches a
certain temperature and continues to run
(even with ignition off), until the coolant
temperature drops. Therefore, never

touch the fan blades as they will rotate spontaneously when the termoswitch
turns the fan on.
Be careful if you have to remove the cap from a hot coolant fluid reservoir. Protect
your hands, arms and face against
scalding. Use a thick rag and open the
cap carefully one turn to allow excess
pressure to escape before removing the
cap.

If the fan is not working, the fuse for the fan
may be burned out, or the relay may be
defective. See "Fuses and Relays".
After the engine has cooled down, check the coolant level (see "Cooling System"). If the
coolant level is low, top it up with water.
Check for possible leaks.
If the coolant level is normal, proceed to the
nearest workshop. Avoid idle speed and stop-
and-go driving. But with an inoperative fan,
the coolant will heat up again. When the
needle enters the upper field, stop again and
let the engine cool down before you continue
driving.
Coolant system malfunctions should be
remedied by the nearest Porsche dealer, as
severe engine damage may occur.

36


Fuel Gauge and FuelReserve Indicator
When the ignition is turned on, the amount of
fuel in the tank is indicated by the fuel gauge
in the right part of the dial.
If the needle enters the area in the bottom and the fuel reserve indicator lights up, there is
only a reserve of about. 2.1 U.S. gal/8 liters
left in the tank. Time to refuel at the next gas
station.
Brake Pad
Warning Light
The brake pad warning light comes on when the ignition is turned on and goes out after the engine has started.
If the light stays on when the engine is
running or comes on while driving, the brake
pads are worn, excessively.
Do not continue to operate the vehicle but
have your Porsche dealer check and
replace the brake pads.

Safety Belt
Warning Light
When the ignition is turned on the light will
come on for about 6 seconds to remind driver
and passenger to buckle up. See "Safety
Belts" for more details.


Parking Brake Light
The parking brake light will light up when the
ignition is turned on and the parking brake is
set.
The light goes out when the parking brake is fully released.
Parking Light
The parking light indicator at the bottom in the
left instrument cluster lights up when the
parking lights are switched on.

Turn Signal
Indicator Light
The turn signal indicator light, which is located below the central warning light, will flash at the same frequency as the turn signals. If a turn
signal fails, the control light flashes at about
twice the normal frequency. Have your dealer
check and repair it for you.
High Beam Indicator
Light

The high-beam indicator light, which is located at the top between the tachometer and the
right instrument cluster, will light up when you
switch on the high beams or when you flash
signal. The indicator goes out when you
switch to low beam.

Central Warning Light
The central warning light comes on after
turning on the ignition. This light monitors all
functions displayed by the instruments. If one
of these functions fails, the central warning
light and the pertinent indicator light come on
until the malfunction has been corrected. The
vehicle should immediately be taken to the
nearest authorized workshop.

37

Right Instrument Cluster
The right instrument cluster combines the oil
pressure gauge with the oil pressure warning
light, the voltmeter with the alternator warning
light as well as the brake fluid warning light.

Oil Pressure Gauge
Engine oil pressure is shown in bars. At 5.000 rpm, with the engine at normal operating temperature (approx. 90°C / 194°F), the pressure should be approx. 4 bar. A slight
drop in oil pressure is normal under certain
operating conditions such as prolonged
highway driving in hot weather.
At idle speed, with the engine oil hot, the oil pressure can sink to 0.5 bar - this does not
indicate any loss of engine performance.
However, if the oil pressure drops suddenly
while you are driving, or if the warning light comes on, pull off the road,
stop the engine
and wait for it to cool down. Check the
engine oil level. If the oil level is normal,
contact the nearest dealer.

Oil Pressure
Warning Light
The oil pressure warning light comes on when the ignition is turned on. It should go out when the engine is started and has reached the
correct oil pressure.
If the oil pressure warning light
does not light up when turning the ignition on, or if it does
not go out after starting the engine, contact
your Porsche dealer immediately.
If the oil pressure warning light comes on
while you are driving, pull off the road and stop the engine .
Check the oil level to make sure you have
enough oil. If oil level is correct and the oil pressure warning light is still on, do not driv
e
the vehicle as severe engine damage may
result. Contact your nearest Porsche dealer
for assistance.
An occasional brief flickering of the oil pressure warning light at idle speed and
normal engine temperature is no cause for
concern if the light goes out upon
acceleration.
The oil pressure warning light is not an
indicator for low engine oil level. To check the
oil level, always use the dipstick.
Make it a habit to have the oil level checked
with every fuel filling.
Voltmeter
The voltmeter shows the overall condition of
the charging system. The needle should
normally stay in the 12-
14 volt range when the engine is running. A temporary drop below 12
volts when starting the engine is normal.
38

Alternator Warning Light
The alternator warning light comes on when
the ignition is turned on. It should go out after
the engine is started.
If the alternator warning light does not light
up when turning the ignition on, or if it does
not go out
after starting the engine, there is a malfunction in the electrical system. If this is
the case, contact your Porsche dealer.
WARNING
If the alternator warning light comes on
while you are driving, pull off the road and
stop the engine.
Check whether the Polyrib-belt is slipping or
broken. The Polyrib-belt not only drives the
alternator for battery charging, but also the air
conditioner compressor.
If the light just flickers lightly, the Polyrib bel t
may be loose and is slipping.
The belt should be tightened or replaced
before you continue driving.


Brake Fluid Warning
Light
The brake warning light monitors the hydraulic dual-circuit brake system. It lights up when the ignition is turned on and should go out after
the engine has been started.
If the brake warning light fails to light up when
the ignition is turned on, or if it fails to go out
after the engine is started, there may be a
malfunction in the electrical system. Let your
Porsche dealer locate and correct the
condition promptly.
Should the light come on while driving, the
brake fluid level in the reservoir could be too
low, or one of the dual brake circuits may
have failed. In either case, the brakes will
function but a much longer distance and a far
greater pedal pressure are required to bring
the car to a halt. See "Brakes" for more
details.
Carefully pull off the road and stop. Have
your car towed to the nearest dealer for
repair. Continued operation of a car with
defective brakes is dangerous.
Antilock
The warning light goes on in the event of a
malfunction in the ABS system. The system is
switched off; the normal brake system
remains fully operational. If the light comes
on, take your vehicle to your authorized dealer for service immediately.
Air Bag
See "Air Bag System" for details.

39

Heating Ventilation System
1 Fan switch
2 Air distribution to windshield
3 Air distribution to footwell outlets
4 Temperature switch
5 Defroster switch
6 Recirculation switch

A Air outlet - left side dashboard vent
B Open and close - left side dashboard vent
C
Air outlet - center dashboard vent, left
section
D Open and close - center dashboard vent

E Air outlet - center dashboard vent, right
section
F
Open and close - right side dashboard vent
G Air outlet - right side dashboard vent


44a

Heating and Ventilation
WARNING
Familiarize yourself thoroughly with the proper use and function of the
ventilation/heating, defogging/defrosting
and the air conditioning system.
For safe driving it is extremely important that you follow the operating instructions
in this manual. If in doubt, consult with
your Porsche dealer.
Maximum heating output and fast defrosting can be obtained only after the
engine has reached normal operating
temperature.
Before turning on the air conditioner, move the two air distribution control levers to
their center positions, and move the
temperature control knob to the extreme
counterclockwise position.
Should you suspect that the air
conditioner is damaged, have it checked
promptly. Leaks must be sealed
immediately, since loss of refrigerant may
result in serious damage to the air
conditioner system.

The upper lever (2) controls the air flow to the windshield" right position: open, left position: closed.
The lower lever (3) controls the air flow to the
footwell outlets (right position: open -left
position: closed).
The center dashboard vent can be opened or
closed by operating the lever (D). For closing,
the lever is pushed all the way up. For
opening, push the lever downward for the
desired air volume.
The direction of the air outlet is controlled by
means of handles (C, E) on the vents.
The side dashboard vents are opened or
closed by means of the lower levers (B, F) (

- open, - closed). Again, the air outlet direction is controlled by means of handles (A, G) on the vents.
Heater Control
Activation of the heater control system ensures temperature control in the passenger
compartment in accordance with the
temperature range preset by the temperature
knob. The passenger compartment
temperature is kept constant under varying
climatic conditions.

Fan Control Switch Knob
In order to ensure air circulation even with the
vehicle standing or moving at low speed, the
fan is running at low speed even at switch
position 0. If you desire more air flow, the fan
can be switched to steps 1 through 4.
Defroster Switch
Since the effectiveness of the heating
depends on the cooling water temperature,
the full heating power is not available until the
engine has reached its normal operating
temperature. To achieve the best defroster
effectiveness, the center dashboard vent must be closed entirely (push lever to its extreme
top position). Then press the defroster button - indicator light comes on. Independent of the
position of the upper and lower levers, high-
low temperature switch and the fan control
switch knob, the system automatically
switches to maximum heating power at fan
stage 4 and the full air flow is directed to the
windshield and the side dashboard vents.
Recirculation Switch
When you follow a truck or bus to prevent the
exhaust gases from entering your car through
the fresh air vents, press the recirculation
switch. The fresh air supply is then interrupted and air from inside of the vehicle will be
recirculated. The recirculation effect should
be utilized for only a short period of time to prevent windshield misting! 44b

Automatically Controlled
Air Conditioner
The air conditioning system works only when
the engine is running. Its refrigerating capacity depends on engine speed. If a high
refrigerating capacity is desired, it is
necessary to rev up the engine -
particularly in city or bumper-to-bumper traffic.
The air conditioning system can be turned on
at any air distribution position by pressing the
air conditioner switch. When the system is
turned on, the air conditioning compressor is
activated via a magnetic clutch.
Optimal cooling is achieved when the fan
control switch is at position 4, the windows are closed and the lateral as well as the
center dashboard vents are fully opened and
the temperature switch is set at maximum
cooling power.
When the air conditioning system is on,
additional cooled air enters the glove
compartment through a vent.
After prolonged exposure to sun, it is recommended that you ventilate the
passenger compartment with the windows
down and air conditioning on.
Should the air conditioning system fail, i. e.
uncooled air flows through the vents while the
system is switched on, have it checked in an
authorized workshop.


45

Functioning
The automatic system controls the passenger
compartment temperature in accordance with
the temperature preset by the temperature
knob.
The passenger compartment temperature is
kept constant under varying climatic
conditions.
Cold and warm air is automatically mixed by
means of air flaps operated by a servo motor.
The servo motor is controlled by a passenger
compartment temperature sensor, an ambient
temperature sensor and a temperature sensor located in the air conditioner.
There are several options to satisfy the
requirements of individual comfort with an
automatically controlled air-conditioning
system:
The upper level (2) is operated to direct the air flow towards the windshield (right position:
open; left position: closed).
The lower level (3) can be used to direct the
air flow to the footwell outlets (right position:
open; left position: closed). The positions of
these two levers are infinitely variable and can be set independently of one another. A higher or lower temperature range can be preselected by means of the temperature
control knob.

Air Conditioning System Maintenance The air conditioning system must be turned on for a short period of time at least once a
month. This instruction should be observed
particularly during the cold season to ensure
proper lubrication of the sealing rings and
compressor bearings.
For this purpose, set the temperature control
knob at maximum cooling temperature
(extreme counterclockwise position).
Check the compressor polyrib belt for proper
tension during regular maintenance.
Due to the loss of refrigerant, which is
technically inevitable, the refrigerant level in
the fluid reservoir should be checked at least
once a year.
If gas bubbles are visible over an extended
period of time in the inspection window of the
fluid reservoir while the air conditioner is
running, there is a deficit of refrigerant in the
air conditioning system. The brief appearance
of gas bubbles is due to technical reasons.
Should the air conditioning system fail, i. e.
uncooled air flows through the vents while the
system is switched on, have it checked by
your Porsche dealer.


46

Break-in Hints for the first 1.000 miles /
1.600 kilometers
There are no specific break-in rules for your
Porsche. However, by observing a few
precautions you can help extend the service
life and performance of your engine.
During the first 1.000 miles / 1.600 km, all
working components of the engine adjust to
each other to a certain degree. Therefore:
Avoid full throttle starts and abrupt stops. Change speeds frequently. Vary the throttle
load.
Do not exceed maximum engine speed of
5.000 rpm (revolutions per minute).
Do not run a cold engine at high rpm or in
Neutral.
Do not let the engine labor, especially when
driving uphill. Shift to the next proper gear in
time (use the most favorable rpm range).
There may be a slight stiffness in the steering, gearshifting or other controls during the break-
in period, which will gradually disappear.
Never lug the engine in high gear at low
speeds. This rule applies all the time, not
just during the break-in period.

Breaking in brake pads
Brake pads do not possess maximum braking
efficiency when the car is new. Therefore
more pedal force is necessary during the first
100 to 150 miles (150 to 250 km). This also
applies to replacement brake pads.

New tires
New tires do not possess maximum traction.
They tend to
be slippery. Break in new tires by driving at moderate speeds during the first 60
to 120 miles (100 to 200 km), and longer
braking distances must be anticipated.
Engine Oil Consumption
During the break-in period oil consumption
may be higher than normal.
As always, the rate of oil consumption depends on the quality and viscosity of oil, the speed at which the engine is operated, the climate, road conditions as well as the amount of dilution and oxidation of the lubricant.
Check engine oil level, add if necessary. Make it a habit to have engine oil checked with
every fuel filling.


47

Engine Exhaust WARNING
Engine exhaust is dangerous if inhaled.
Never start or let the engine run in a closed garage. Never sit in your car for
prolonged periods with the engine on and
the car not moving.
Although exhaust fumes from the engine have many components which you can smell, they also contain carbon monoxide, which is a colorless and odorless gas.
Carbon monoxide can be fatal if inhaled.
If you smell gas fumes in the vehicle, drive with the windows open but keep the
hatchback closed. Have the cause
immediately located and corrected.
Because of inherent hazards, we do not recommend transporting objects larger
than those fitting safely into the luggage
compartment. Keep the hatchback closed
while driving to prevent poisonous
exhaust gas from being drawn into the
vehicle.
Never carry additional fuel containers in your vehicle. Such containers, full or
partially empty, may leak, cause an
explosion, or result in fire in case of a
collision.


Operating Your Porsche in other Countries Government regulations in the United States
and Canada require that automobiles meet
specific emission regulations and safety
standards.
Therefore cars built for the U.S. and Canada
differ from vehicles sold in other countries.
If you plan to take your Porsche outside the
continental limits of the United States or
Canada, there is the possibility that
unleaded fuel may not be available;
unleaded fuel may have a considerably lower octane rating. Excessive engine knock and
serious damage to both engine and catalytic
converter could result;
service may be inadequate due to lack of
proper service facilities, tools or diagnostic
equipment;
replacement parts may not be available or
very difficult to get.
Porsche cannot be responsible for the
mechanical damage that could result
because of inadequate fuel, service or
parts availability.
If you bought your car abroad and want to
bring it back home, be sure to find out about
shipping and forwarding requirements, as well as current import and customs regulations.

48

Controls for Automatic Transmission
The selector lever has 6 positions:

Park
Rev erse

Neutral
Driv e
Low
Low




... If the selector lever is unintentionally mo ved
into Neutral (N) while driving, take your foot off
the accelerator pedal and wait until the engine
speed has dropped to idle before selecting a driving position.
Never shift into Reverse (R) or Park (P) when
the car is in motion.
... Never get out of the driver's seat when the
engine is running and the selector lever is not in the "P" position. Move the selector lever to
"P" and apply parking brake.
... Always make sure the selector lever is in the
"P" position when checking under the hood.
Otherwise, any increase in engine speed may
set the vehicle in motion, even with the
parking brake applied.
... A driving position must never be used for
holding the vehicle at rest uphill. Always use
your foot brakes when stopped on inclines.
Driving the Automatic Transmission
The Automatic Transmission has 3 forward
gears and one reverse. In driving positions D
and 2 the Automatic Transmission changes
gears automatically while driving.
Position D
is the driving position normally used for city and highway driving. It ranges from zero to top
speed, and all three gears shift automatically
depending on driving speed.

Start in Park
The selector lever has a push button in the
handle. The push button must be
depressed when selecting the following
positions:
From P to R
R to P depress push button
N to R in handle
2 to 1
The selector lever can be moved freely
between the other positions.
The respective position is illuminated in the tachometer as long as the ignition key is in
the ignition lock.
Remember the following basic rules:

... Apply the parking brake or foot brake before
selecting a driving position. When the selector
lever is in a driving position, the car may creep
even at idle speed. Therefore, do not release
the parking brake or foot brake until you are
ready to move.
... Do not accelerate while selecting a driving
position. Wait for positive engagement. At this
time the engine must run at idle speed so that
no undue stress will be placed on the automatic
clutches in the transmission.
53

Position 2
is to be used for mountain driving or slow
driving, when towing a trailer and also when
you want to make use of the engine's braking
effect. In "2", only the first and second gears
will engage automatically. Therefore, only shift down into position "2" when the speed is below 63 mph or 100 km/h. It is not necessary to let up on the accelerator.
Position 1
is needed on rare occasions. It should only be
used up to 25 mph or 40 km/h. In "1" the
transmission will stay in first gear and not shift
into the second or third gear.
Only shift down into "1" when driving speed is below 25
mph or 40 km/h.
The reverse position R
Reverse should be selected only when the car has come to a full stop and the engine is
running at idle speed.
The back-up lights come on automatically
when you engage Reverse (with ignition on). Starting the engine
is only possible when the selector lever is in
Neutral or Park (N or P) . As long as one of
the driving positions is engaged a safety
switch prevents the engine from being started.

Emergency starting
Your Porsche with Automatic Transmission
cannot be started by pushing or towing.
Should the engine fail to start see "Emergency starting with jumper cables" or consult your
nearest authorized Porsche dealer.
DO NOT START OR TOW the car without
ATF in the transmission, as this will result
in serious damage to transmission and
torque converter.
Putting the car in gear
With the parking brake or foot brake set, shift
into the position you wish to use, usually
position D. To accelerate, release the brake
and depress the gas pedal.
WARNING
Do not release the brake before you are
prepared to move, because power is
transmitted to the wheels as soon as a
driving position is engaged.
Selecting a driving position while driving
is easy. Simply release the accelerator pedal
and move the selector lever from the position
you are in into the position you want. Then
step on the accelerator again.
WARNING
Do not shift to a lower driving position
until vehicle speed has dropped below the
specified limits. Engine speed will sudden-

ly increase and may cause engine damage and loss of vehicle control.
Stopping
When stopping temporarily, at traffic lights for
example, it is not necessary to move the
selector lever to Neutral. Simply apply the
brakes. To start again release the brake and
accelerate.
Parking
When parking your car, apply the parking
brake first, and then move the selector lever to position P. To do this, depress the button and
push the lever through R to P. The
transmission is then mechanically locked.
Park may only be engaged when the car is
stationary.
Do not remove the key from the ignition
steering lock until you have parked the car, because removal of the key locks the
steering wheel.
Shift out of the Park position, before releasing
the parking brake.
When the car is parked on a steep hill, shifting
out of Park may be a little harder. This is due
to the weight the car exerts on the
transmission.

54