Question about 1992 Volvo 940
Try checking / changing the oxygen sensor.
Posted on May 20, 2009
Vacuum leaks, air filter clogged, idle control system, or leaking egr, leaking head gasket, worn timing chain, camshaft lobes worn, valves burnt or leaking, faulty emissions or engine control system.
Could be any of the above. Check your air filter first, then vacuum leaks, the idle control valve sensor. Work your way through them from the cheapest to the expensive. Good luck!
Posted on May 15, 2009
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Posted on Jan 02, 2017
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