check engine VOLVO 850 1996 User Guide

1996 Volvo 850

Jump starting

If the booster battery to be used is in another car, check that the cars\
are not touching to prevent
premature completion of negative circuit. Note the position of the batte\
ry terminals and using jumper
cables:
l First connect the booster battery positive (+) terminal (1) to car b\
attery positive (+) terminal (2).
l Then connect the booster battery negative (-) terminal (3) to a stat\
ionary solid metal part on the
engine at a point away from the battery (4).

Do not connect booster cable to any part of fuel system or any moving pa\
rts. Avoid touching hot
manifolds.
After the engine has started, first remove the negative (-) terminal j\
umper cable. Then remove the
positive (+) terminal jumper cable.

CAUTION: Improper hook-up of jumper cables or use of other than 12-volt \
batteries could result in
damage to equipment and/or battery.

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1996 Volvo 850


Brake circuit malfunction

If one of the brake circuits should malfunction, the red warning light w\
ill come on, the pedal stroke
increases slightly, the pedal feels softer and extra pressure is require\
d for normal braking. If the light
comes on while driving or braking, stop immediately and check the brake \
fluid level in the reservoir.
WARNING! If the fluid level is below the MIN mark in either section of t\
he reservoir: DO NOT
DRIVE. Tow the car to a Volvo retailer and have the brake system checked\
and repaired.

Moisture on brake discs and brake pads affects braking.

Driving in rain and slush or passing through an automatic car wash can c\
ause water to collect on the
brake discs and pads. This will cause a delay in braking effect when the\
pedal is depressed. To avoid
such a delay when the brakes are needed, depress the pedal occasionally \
when driving through rain,
slush etc. This will remove the water from the brakes. Check that brake \
application feels normal! This
should also be done after washing or starting in very damp weather.

Severe strain on the brake system

The brakes will be subject to severe strain when driving in mountains or\
hilly areas or towing. The speed
is usually low which means that the cooling of the brakes is less effici\
ent than when driving on level
roads. To reduce the strain on the brakes it is advisable not to use the\
brakes excessively. Instead, shift
into a lower gear, position 3 or in some cases, L(automatic transmissio\
n) and let the engine help with the
braking. Do not forget that, if you are towing a trailer, the brakes wil\
l be subjected to greater load than is
normal.

If the brake power-assist does function

The power assist to the brakes functions only when the engine is running\
. When the car is moving
without the engine running, the brake pedal pressure required to stop th\
e car is increased by 3-4 times
and the brake pedal feels stiff.
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1996 Volvo 850
pg. 4:17 Trailer towing
When preparing for trailer towing, observe the following:

l Volvo recommends the use of Volvo trailer hitches which are specially de\
signed for the car. For
trailer weights exceeding 2000 lbs. (908 kg), use only a trailer hitch\
offered as a Genuine Volvo
accessory.

NOTE: Models with automatic transmission are equipped with a transmissio\
n oil cooler as standard
equipment. This cooler helps prevent overheating of the transmission dur\
ing times of increased load, as
when towing a trailer.

l Maximum trailer weight recommended by Volvo is:
Trailers without brakes : 1100 lbs (500kg)
Trailers with brakes: 2" (50 mm) ball - 3300 lbs (1500 kg), 1 7/8" (\
47 mm) ball - 2000 lbs (908 kg).

Observe the legal requirements of the state/province in which the vehicl\
es are registered. All Volvo
models are equipped with energy-absorbing shock-mounted bumpers. Trailer\
hitch installation should
not interfere with the proper operation of this bumper system.

Trailer towing does not normally present any particular problems, but ta\
ke into consideration:
l Increase tire pressure to recommended full. See section "Wheels and tire\
s".
l Recommended hitch tongue load is 110 (50 kgs) for trailer weights belo\
w 2,650 lbs (1,200 kgs) and
165 lbs (75 kgs) for trailer weights above 2,650 lbs (1,200 kgs). Fo\
r trailer weights between 2,650-3,300
lbs (1,200-1,500 kgs) a top speed of 50 mph (80 km/h) should never b\
e exceeded.
l Engine and transmission are subject to increased loads. Therefore, engin\
e coolant temperature should
be closely watched when driving in hot climates or hilly terrain. Use lo\
wer gear and turn off air
conditioner if temperature gauge pointer enters the red range.
l Avoid overload and other abusive operation.
l Hauling a trailer affects handling, durability, and economy.
l It is necessary to balance trailer brakes with the towing vehicle brakes\
to provide a safe stop (check
and observe State/Local regulations).
l Do not connect the trailer's brake system directly to the vehicle's brak\
e system.
l More frequent vehicle maintenance is required.
l Remove the ball and drawbar assembly when the hitch is not being used.
l Volvo recommends the use of synthetic engine oil when towing a trailer o\
ver long distances or in
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1996 Volvo 850
mountainous areas.

NOTE: Refer to section "Automatic transmission" for additional trailer h\
auling tips.
WARNING!
l Bumper-attached trailer hitches must not be used on Volvos, nor should s\
afety chains be attached to
the bumper.
l Trailer hitches attaching to the vehicle rear axle must not be used.
l Never connect a trailer's hydraulic brake system directly to the vehicle\
brake system, nor a trailer's
lighting system directly to the vehicle lighting system. Consult your ne\
arest authorized Volvo retailer
for correct installation.
pg. 4:18 Winter driving
Cold weather precautions

l If you wish to check your car before the approach of cold weather, the f\
ollowing advice is worth
noting:
l Make sure that the engine coolant contains at least 50 percent antifreez\
e: that is, 3.7 qts. (3.5 liters)
Volvo Genuine Coolant/Antifreeze. This gives protection against freezing\
down to -31°F (-35°C). See
section "Coolant". The use of "recycled" antifreeze is not approved by V\
olvo. Different types of
antifreeze may not be mixed.
l Try to keep the fuel tank well filled - this prevents the formation of c\
ondensation in the tank. In
addition in extremely cold weather conditions it is worthwhile to add fu\
el line de-icer before refueling.
l The viscosity of the engine oil is important. Oil with low viscosity (t\
hinner oil) improves cold-
weather starting as well as decreasing fuel consumption while the engine\
is warming up. For winter use,
5W-30 oil, particularly the synthetic type, is recommended. Be sure to u\
se good quality oil but do not
use this cold-weather oil for hard driving or in warm weather. See secti\
on "Engine oil" for more
information.
l The load placed on the battery is greater during the winter since the he\
ater, windshield wipers,
lighting etc. are used more often. Moreover, the capacity of the battery\
decreases as the temperature
drops. In very cold weather, a poorly charged battery can freeze and be \
damaged. It is therefore
advisable to check the state of charge more frequently and spray an anti\
-rust oil on the battery posts.
l Volvo recommends the use of snow tires on all four wheels for winter dri\
ving - see section "Wheels
and tires".
l To prevent the washer reservoir from freezing, add washer solvents conta\
ining antifreeze (see page
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1996 Volvo 850
8:15 for the location of the washer fluid reservoir). This is important sin\
ce the dirt is often splashed on
the windshield during winter driving, thus requiring frequent use of the\
washers and wipers. The Volvo
Washer Solvent should be diluted as follows:
Down to 14°F (-10°C): 1 part anti-freeze and 4 parts water
Down to 5°F (-15°C): 1 part anti-freeze and 3 parts water
Down to 0°F (-18°C): 1 part anti-freeze and 2 parts water
Down to -18°F (-28°): 1 part anti-freeze and 1 part water
l When driving in temperatures below 15 F (-10 C), we recommend the use \
of Volvo's radiator guard to
help the engine reach normal operating temperature as quickly as possibl\
e. This guard should not be
used when towing a trailer.
l Use Volvo Teflon Lock Spray in the locks.

NOTE: Avoid the use of de-icing spray as they can cause damage to the lo\
cks.

Winter/Wet mode

Enhanced Vehicle Traction

This mode may be selected for starting/moving off on slippery roads. In \
this mode:
* In position D, the gearbox starts in 3rd gear and changes up to 4th ge\
ar.
* In position 3, 2nd gear is locked and there is no change up to 3rd gea\
r.
In position L, first gear is locked.
* These positions always offer the kick-down feature.
pg. 4:19 Long distance trips, City driving
Before a long distance trip

It is always worthwhile to have your car checked at a Volvo retailer bef\
ore driving long distances. Your
retailer will also be able to supply you with bulbs, fuses, spark plugs \
and wiper blades for your use in the
event that problems occur.
If you prefer to check the car yourself, please note the following:
l Check that the engine runs smoothly and that fuel consumption is normal.\

l Check engine oil, coolant levels, and for possible fuel leakage.
l Check transmission oil level.
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1996 Volvo 850
l Check condition of drive belts.
l Check state of charge of battery.
l Examine tires carefully (the spare tire as well), and replace those th\
at are worn. Check tire pressures.
l The brakes, front wheel alignment, and steering gear should be checked b\
y your Volvo retailer only.
l Check all lights, including high beams.
l Reflective warning triangles are legal requirement in some countries.
l Have a word with your Volvo retailer concerning engine adjustments if yo\
u intend to drive in
countries where it may be difficult to obtain correct fuel.
l Consider your destination. If you will be driving through an area where \
snow or ice are likely to
occur, consider snow tires.




Contents | Top of Page
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1996 Volvo 850
Maintenance Operation thousand miles
(thousand km) 10
(16) 20
(32) 30
(48) 40
(64) 50
(80) 60
(96)
ENGINE SYSTEM MAINTENANCE
ENGINE
Fuel (Line) Filter¹
PCV Nipple (orifice)/hoses,clean I
Battery I I I I I I
BRAKES
Inspect brakes, replace components as necessary I I I I I I
Brake Fluid²
STEERING/SUSPENSION
Rotate tires/check wear (align front end if
needed.) I
I I I I I
Check power steering fluid level. I I I I I I
Grease front link arm stops L L L L L L
BODY
Power antenna (clean) I I I I I I
Trunk/hood, hinges and latches L L L L L L
1) Replace at 100,000 miles (160,000 km)
2) Brake fluid should be changed at owner request every second year (o\
nce a year if the car is driven in
mountainous areas or in areas with high humidity).

The following items should be checked weekly by the driver (it takes on\
ly a few minutes).
Engine oil level Horns
Brake fluid level Windshield wipers
Radiator coolant level Tire pressure (all five tires)
Operation of all lights Level of windshield washer fluid

The following should also be carried out at regular intervals:
Washing
Polishing
Cleaning
Rust protection
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1996 Volvo 850
pg. 8:6 Servicing (cont.)
The following precautions must be observed when carrying out repairs to \
the vehicle
WARNING! The distributor ignition system operates at very high voltages.\
Special safety precautions
must be followed to prevent injury. Always turn the ignition off when:
l Connecting engine test and diagnostic equipment to the vehicle (timing \
light, tach-dwell tester,
ignition oscilloscope, etc.).
l Replacing distributor ignition components e.g. plugs, coil, etc.
l Do not touch any part of the distributor ignition system while the engin\
e is running. This may result
in unintended movements and body injury.

Battery

l Check that the battery cables are correctly connected and properly tight\
ened.
l Never disconnect the battery when the engine is running, for example whe\
n changing the battery.
l The battery should be disconnected when a boost charger is used.
l Switch off the radio before disconnecting the battery. If your radio has\
an anti-theft code and the
battery is disconnected, the radio code has to be re-entered in order fo\
r the radio to function.

Replacing spark plugs

The spark plugs should be changed every 30,000 miles (48,000 km). Howe\
ver, city driving or fast
highway driving may necessitate changing after 15,000 miles (24,000 km)\
of driving. When installing
new plugs, be sure to fit the right type and use correct torque, see "Sp\
ecifications". When changing the
plugs, check that the suppressor connectors are in good condition. Crack\
ed or damaged connectors
should be replaced. When changing the spark plugs, clean the terminals a\
nd the rubber seals.

Hoisting the car

If a garage jack is used to lift the car, the two jack attachments point\
s should be used. They are specially
reinforced to bear the weight of the car. A garage jack can also be plac\
ed under the front of the engine
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1996 Volvo 850

Unstable idle, misfiring, or poor emission control is often caused by le\
aking vacuum hoses or
connections. Check all vacuum hoses and connections.

Checking and adjusting idle air control system

Your Volvo is equipped with an electronically controlled idle air contro\
l system that requires no
checking or adjustment.

Timing belt

For proper functioning of the vehicle and its emission control systems, \
Volvo recommends that the
timing belt be replaced every 70,000 miles (112,000 km).

Fuel system cap, tank and lines and connections

The effectiveness of the fuel system to contain hydrocarbons is dependen\
t largely on a leak-free system.
Check for proper sealing of the gasoline filler cap which contains "O" r\
ing type seals.

Fuel (line) filter

The fuel line filter is located next to the fuel pump. For proper functi\
oning of the vehicle and its
emission control systems, the fuel line filter should be replaced at 100\
,000 miles (160,000 km). The
filter is replaced as one complete unit. Replace more frequently if cont\
aminated fuel is introduced into
the tank (or if there is reason to suspect that this has occurred).

Charge air cooler (Intercooler)

The B 5234 Turbo engine employs a turbo-compressor to force air into the\
engine inlet manifold and a
charge air cooler to cool the compressed inlet air. The resulting increa\
se in air flow raises pressure in the
intake manifold by approx. 8.7 psi (over atmospheric pressure) and eng\
ine power output by approx. 50
horsepower over that developed by the normally-aspirated engine. The cha\
rge air cooler (which
resembles a radiator) is located between the turbo-compressor and inlet\
manifold.
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1996 Volvo 850
Evaporative control system

The car is equipped with a gas evaporative control system, which prevent\
s gasoline fumes from being
released into the atmosphere. The system is comprised of an expansion ch\
amber in the fuel tank, a roll-
over valve on the cross member in front of the fuel tank and a charcoal \
canister with a built-in vacuum
valve under the left-front wheel housing. The components are interconnec\
ted by hoses which channel
fuel vapor from the gas tank to the charcoal filter, where it is stored \
until the engine is started and then
drawn into the engine's air intake system.


Crankcase ventilation

The engine is provided with positive crankcase ventilation which prevent\
s crankcase gases from being
released into the atmosphere. Instead, the crankcase gases are admitted \
to the intake manifold and
cylinders.

PCV system

The orifice nipple in the intake manifold and the filter at the end of t\
he PCV hose in the air cleaner
should be inspected every 60,000 miles (96,000 km). Check/replace rubb\
er hoses at the same time. pg. 8:9 Lubrication
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