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by bigken541 on May 11th, 2008

bigken541

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I have a 91 GMC Jimmy with a 4.3L I just got running ok. Changed the fuel pump and filter, went to Change the oxygen sensor and now it wont start and has gas dripping out of an exhaust leak near the sensor I replaced. Can any body please help?

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  • by snoblurot on February 14th, 2011

    snoblurot

    check the wires to the O2 sensor that there is not a short or broked wire as this may cause a lean reading making the computer add more fuel to compensated for the lean reading.always if you have a problem after replacing a part that you didn't have prior go back to that area and look at it again most likely you will find
    the cause

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You're reading I have a 91 GMC Jimmy with a 4.3L I just got running ok. Changed the fuel pump and filter, went to Change the oxygen sensor and now it wont start and has gas dripping out of an exhaust leak near the sensor I replaced. Can any body please help?

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