engine overheat VOLVO 240 1990 Owners Manual

Volvo 1990 240 Model
l Observe the following points when in use.
l Avoid point loads. Distribute the load evenly.
l Place the heavy cargo at bottom of load.
l Observe that center of gravity and handling are influenced by the load w\
eight.
l Increasing load size increases wind resistance.
l Anchor the cargo correctly with a cord.
l Drive carefully. Avoid rapid starts, heavy cornering and heavy braking. \
l Max. roof load is 220 lbs (100 kg); use a root rack with a sufficient \
load rating.
pg. 51 Automatic transmission, Brake system
The following "Special Tips" apply to cars with automatic transmission

l For steep hills and when driving for prolonged periods at low speeds, po\
sition 1 should be selected.
Avoid, however, repeated changes since this can cause overheating of the\
transmission oil. For driving
on mountain roads with long persistent uphill gradients, select position\
2.
l When negotiating long, steep, downhill slopes, position 1 should be sele\
cted and position 2 for less
severe inclines, in order to obtain the best possible engine braking eff\
ect.
Do not hold the car stationary on an incline by using the accelerator pe\
dal. Instead, engage the hand
brake. This prevents the transmission oil from becoming overheated.
l 4th gear must be disengaged when hauling a trailer!
l If an additional transmission oil cooler is installed you can haul a tra\
iler with the overdrive engaged.
See next "special tip".
l When driving with heavy trailers, it is recommended that an additional o\
il cooler be installed. This
applies especially when driving under severe conditions e.g. mountain dr\
iving or prolonged driving at
high speeds without breaks. The additional oil cooler is available as a \
genuine Volvo accessory.
Regarding oil change, see section titled "Transmission oil".

Moisture on brake discs and brake pads affects braking.

Driving in rain and slush or passing through a normal car wash can cause\
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 d\
riving in rain or slush.
This will remove the water from the brakes.
This should also be done after washing or starting in very damp weather.\


If the brake power assist does not function --
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Volvo 1990 240 Model
pg. 52 Catalytic Converter
Catalytic Converter Cautions


l Keep your engine properly tuned. Certain engine malfunctions, particular\
ly involving the electrical,
fuel or ignition systems, may cause unusually high converter temperature\
s. Do not continue to operate
your vehicle it you detect engine misfire, noticeable loss of power or o\
ther unusual operating conditions,
such as engine overheating or backfiring. A properly-tuned engine will h\
elp in avoiding malfunctions
that could damage the Catalytic Converter.

l Remember that tampering with or unauthorized modifications to the engine\
or the vehicle may be
illegal and can cause catalyst or exhaust system overheating. This inclu\
des:
-- Altering fuel injection settings or components.
-- Adjusting ignition timing beyond specified limits.
-- Altering emission system components or location or removing component\
s.
-- Use of leaded fuel.

WARNING: Do not park your car over combustible materials, such as grass \
or leaves, which can
come into contact with the hot exhaust system and cause such materials t\
o ignite under certain wind
and weather conditions.

l Excessive starter cranking (in excess of one continuous minute) with a\
n intermittently firing or
flooded engine, can cause catalyst or exhaust system overheating. This a\
lso applies to lengthy pushing or
towing of vehicle to start (manual transmissions only). Do not attempt\
to start a car with automatic
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Volvo 1990 240 Model

Cooling system

The risk of overheating is greatest, especially in hot weather, when:
- towing a trailer up steep inclines for prolonged periods at full throt\
tle, and at low engine rpm.
- idling for prolonged periods while the air conditioning system is in o\
peration.
- stopping the engine suddenly after high speed driving, so called after\
-boiling.
To avoid overheating. the following rules should be followed.
l Reduce speed and downshift when towing a trailer up long steep inclines.\
The risk of over heating can
be reduced by switching off the air conditioning system for a short whil\
e.
l Do not let the engine idle unnecessarily.
l Do not stop the engine immediately after high-speed driving, but allow t\
he engine to idle for 1/2 - 1
minute before switching off.
When the risk of overheating is imminent, or in the event of overheating\
, (the temperature gauge goes
repeatedly into, or stays continually in, the red section) the followin\
g precautions should be taken:
l Switch off the air conditioning system and switch the heater to full (m\
aximum) position.
l Stop the car and put the gear lever into neutral position-position N. Do\
not stop the engine!
l Increase the engine speed to approx. 2000 rpm (twice idling speed).
l Check the level of coolant in the expansion tank. Top-up, if necessary
pg. 75 Alternator, Jump starting
Electrical System cautions

When changing the battery or when carrying out work involving the electr\
ical system, the following
should be observed:

1 A battery connection to the wrong terminal will damage the diodes. Bef\
ore connections are made,
check the polarity of the battery with a voltmeter.

2 If booster batteries are used for starting, they must be properly conn\
ected to prevent the diodes from
being damaged. For correct connection, see "Jump starting".

3 The battery leads should be disconnected any time the battery is being\
charged.
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