Question about 1992 Volvo 240

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Check engine light - 240 enfgine running rich

Returning from a Florida trip - stopped for gas started engine
the check engine light came on and now the car runs rich
black smoke can be seen - terrible gas mileage
any thoughts?

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  • cindyeasley May 11, 2010

    I wish I had a simple fix,I can however recomend that you get a manual,from IPDUSA.COM,it is published by bently publishers and has been very helpful.You can also call these folks and get ideas and solutions.

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  • 541 Answers

It could be a number of things but must be diagnosed via computer code check. If you are unable to do so yourself, find a reputable Volvo mechanic. It could be the air mass meter, a bad O2 sensor or something related. Mine turned out not to be the air meter but a bad ground wire going to it. Didn't find out until $400.00 later.

Posted on Jan 25, 2009

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Try replacing the pressure regulator.

Posted on Oct 09, 2009

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