1990 Volvo 780 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Volvo 780

1990 Volvo 780 Problems

No Start Due to Failed RPM Sensor

A faulty RPM sensor can cause the Check Engine Light to come on and cause a "No Start" condition.

"No start" Due to Failed Fuel Pump Relay

The fuel pump relay may fail resulting in a "no start" condition, the engine will crank over but will not start and run. Checking for proper fuel pressure would be the first step in diagnosing this concern.

Engine Stalling Due to Mass Airflow Sensor Failure

Engine stalling/stumbling problems can be caused by a failing mass airflow sensor.

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1990 Volvo 780 Questions

car has no power (1 answer)

after reparing warped head, test drive at70miles hr. backfired after slowing to return home. checked timming,cylinder pressure,replaced master flow sensor. car starts but no power!HEIP!

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1990 Volvo 780 Recalls

Recall 97V166000
VEHICLE DESCRIPTION: PASSENGER VEHICLES. DUE TO LIMITED SPACE AND VARIATIONS IN THE ASSEMBLY OF THE CABLES, CHAFING OF THE INSULATION OF THE CABLES FEEDING THE SEAT HEATER, POWER SEAT MOTORS AND SEAT BELT WARNING INDICATOR SITUATED UNDER THE FRONT SEAT, CAN OCCUR.
Recall 91V010000
IF CONDITIONS OF HIGH AMBIENT TEMPERATURE, OVERFILLING OF THE FUEL TANK, AND INSUFFICIENT TORQUE ON THE SENDING UNIT LOCK RING EXIST SIMULTANEOUSLY, FUEL SEEPAGE MAY OCCUR FROM THE TOP OF THE TANK.

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