Volvo 780 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Volvo 780
Volvo 780 Problems
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/stumbling problems can be caused by a failing mass airflow sensor.
The transmission overdrive relay often fails, preventing the transmission from shifting into overdrive
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Volvo 780 Questions
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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Volvo 780 Recalls
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.
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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