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Old 03-14-2012, 03:19 PM   #12
OSDCrusher
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Join Date: Aug 2011
Location: Massachusetts
Posts: 66
Re: Say what?

Quote:
Originally Posted by speedygonzales View Post
How about bad O2's? Making the PCM think it's running lean so it fattens up the mixture?

How about a fouled plug or 2?

How about a FPR that is leaking due to a hole in the diaphragm?

How about an injector that is leaking due to the fact that it has NEVER been cleaned?

Since you have gotten it running better, did you change the plugs?

Did you even look at the plugs since you got it running better?
The O2 sensor is another logical reason for this situation, but my thermostat is stuck open so that should be replaced regardless.
The plugs were replaced about 120 miles ago with ACDelco Rapidfires, so I don't think those are the problem. The FPR could also be another reason. I just cleaned the injectors so that is out of the equation, but they could be leaking.
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