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Bad 02 Sensors?

Discussion in 'Stock 1995 - 2001 Explorers' started by 239, December 3, 2011.

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    1. 239

      239 Active Member

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      I suspect that my 02 sensors may not be working. I cleaned my IAC valve a few months back and I used RTV silicone gasket maker...yeah, I read a thread on here that said silicone is really bad for the 02 sensors. I don't have a very good idle at the moment, not bad just not right. I've already replaced the MAF, cleaned the IAC and the only thing I can think of now is either a bad intake gasket or the 02 sensors. I got lean on both banks when I got my codes read, could the sensors cause this?
       
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    3. rickybobby

      rickybobby Well-Known Member

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      the o2 sensors could, but being both banks, a bad intake gasket is more likely the cause
       
    4. 239

      239 Active Member

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      I'll have to check it out, the gasket's probably really hardened by now anyway being stock at 160,000 miles. Man I really hope it isn't the lower intake gasket though that's a whole different repair. Thanks for your input.
       

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