check engine light VOLVO 850 1996 User Guide

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

Normally, the coolant does not need to be changed. If the system must be\
drained, use the following
procedure:
1 Remove the expansion tank cap.
2 Move the temperature adjustment control to max. heat. Open the drain c\
ocks at the rear left of the
engine block and at the bottom right corner of the radiator.
3 Disconnect the lower right radiator hose.
Filling:
4 Close the drain cocks and reconnect the hose.
5 Fill the expansion tank to the MAX mark or slightly above.
6 Run the engine until hot. Check the cooling system connections for tig\
htness. Recheck the coolant
level.

Capacity: Approx. 7.6 US qts. (7.2 liters)
Turbo - 7.4 US qts. (7.0 liters)

Coolant: Volvo Genuine Coolant/Antifreeze only

NOTE: Do not top up with water only. Water by itself reduces the rust-pr\
otective and anti-freeze
qualities of the coolant and has a lower boiling point. It can also caus\
e damage to the cooling system if it
should freeze.
WARNING: If the engine is warm and you are going to top up coolant, unsc\
rew the cap slowly in
order to allow any excess pressure to escape.
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