Condition: low top speed, loss of power, Condition: excessive fuel consumption, Pg. 76 service diagnosis – Volvo 740 GL User Manual
Page 85
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1985 Volvo 740 GL, GLE, Turbo
pg. 76 Service diagnosis
Condition: Low top speed, loss of power
Possible cause
Correction
Air filter clogged.
Check air filter.*
Throttle
misadjusted.
Check that the throttle touches the high speed stop when the accelerator is fully
depressed.*
Fuel filter clogged. Clean fuel tank filter and replace fuel line filter.*
Condition: Excessive fuel consumption
Possible cause
Correction
Fuel lines leaking.
Check tightness.
Spark plugs worn.
Replace plugs.
Air filter clogged.
Check/replace.*
Oxygen sensor system
faulty
Check for open circuit or other electrical fault.
*
* Should be checked by a Volvo dealer.
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