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  #13  
Old 08-19-2015, 09:56 AM
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Re: 1997 Grand Cherokee O2 sensor troubles

Yeah 4 wire. There's 2. One up, I think in the exhaust manifold or close to it, and then this one.

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  #14  
Old 08-19-2015, 08:51 PM
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Re: 1997 Grand Cherokee O2 sensor troubles

Ah ok, so we are talking about the after cat sensor. That one is used for catalyst monitoring, should not do much on fuel trimming. But maybe, when wrongly connected, it could influence the PCM.
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Old 08-19-2015, 08:51 PM
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Re: 1997 Grand Cherokee O2 sensor troubles

I guess so. I unhooked it.
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Old 08-25-2015, 04:38 PM
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Re: 1997 Grand Cherokee O2 sensor troubles

Thanks for your input, it cleared itself up over the past few days, starts better and idles fine again. Must have had to relearn.
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  #17  
Old 08-25-2015, 05:24 PM
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Re: 1997 Grand Cherokee O2 sensor troubles

Quote:
Originally Posted by IHScout View Post
Thanks for your input, it cleared itself up over the past few days, starts better and idles fine again. Must have had to relearn.
Did you hook the O2 sensor back up?
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Old 08-25-2015, 05:28 PM
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Re: 1997 Grand Cherokee O2 sensor troubles

Nope. It barley ran with it hooked up.
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