Loss of power


Sometimes my 1990 Volvo, while on the highway, will lose power and descelerate. There is a feeling of a “sigh” and I have about 15 seconds to pull to the shoulder before the power loss. Sometimes, if I put it in neutral and rev the engine, the power returns. Sometimes, I have to turn the car off, and restart it. My mechanic says everything checks out OK, and he can’t figure it out. Any suggestions?


If I had a dollar for every one of these posts I’ve read I could retire. I wish I had an answer, but I don’t. All I know is this is common behavior for certain years of Volvo vehicles.

Every time I’ve read these questions I’ve asked the poster to please tell us what they did, or what their mechanics did, to solve the problem, so we could pass this information on to others.

No one has ever posted a solution. I wish you luck, and if someone fixes the problem for you, PLEASE post back and let us know what the solution is.


try fuel filter


Can you tell me what years have this problem? Perhaps I’ll just buy another used Volvo that doesn’t have this trouble, since it could be dangerous.


An acquaintance has a 1995 Volvo 850. She had been having difficulties getting it started. It stalled on the road while underway. The self-test computer readout showed nothing. A mechanic at Straight Line Auto Body suggested changing the engine coolant temperature sensor which feeds the engine computer, not the one for the dash gage.Did so. A year later, no further problem!