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Constantly replacing Oxygen Sensors 850 97

posted by  someone claiming to be Pete on  Mon May 14 02:31 CST 2001 [RELATED]

I am constantly replacing the oxygen sensors after about 30,000 miles each time. The problem usually begins with a bad start where the car mis-fires. This leads to a rich mixture for a while and then the sensors fail. When I replace the sensors the problem goes away for another 30k unless I make too many short trips before the car actually heats up. I feel like I am only treating the symptom. Anybody got any idea why this is happening? A couple of Volvo mechanics I went to were stumped. They just wanted to keep replacing sensors at $500 a whack.

Thanks for your help.

Pete







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    Re: Constantly replacing Oxygen Sensors 850 97

    posted by  someone claiming to be joe on  Mon May 14 02:40 CST 2001 [RELATED]

    I would check the wiring to the sensor(s). In particular, check that the voltage to the sensor(s) is correct. It may be possible that more voltage than normal is being supplied and is burning them out.






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