1992 Volvo 240

Defective wires.

Intake system

Check wire terminals at: fuel pump, fuse No. 5 and 7, coil, distributor, ignition switch and relays.

leaking.

Check vacuum hose connections at manifold and auxiliary air valve.

Fuel filter clogged. Clean fuel tank filter and replace fuel line filter.

Condition: Excessive fuel consumption

Possible cause

Correction

Fuel lines

Check

leaking.

tightness.

Spark plugs

Replace plugs.

worn.

 

Condition: Misfiring at highway driving speed

Possible cause

Correction

Spark plugs

Drive the vehicle in a lower gear and keep the engine rpm higher for a few miles

fouled.

in order to remove carbon deposit on the spark plugs. If this procedure is not effective, clean or replace the spark plugs.

pg. 107 Service diagnosis (cont.)

Condition: The gear selector can not be moved from the P position

The gear selector is locked in the P position. To release the selector, the ignition must be switched on (ignition key in position II) and the brake pedal must be depressed.

Depress the brake pedal

Select a gear

Release the brake pedal

If the gear selector cannot be moved, check fuses 7 and 12.

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Volvo 1992 240 owner manual Pg Service diagnosis