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Re: 97 Lumina EGR Valve and O2 sensor Question?
It could just need a post-cat sensor, but once fully warmed up the heater circuit shouldn't cause a problem, and it would run normal...the heater grid is there to make the sensor begin to work sooner when the car is started cold...o2 sensors don't give meaningful data until fully heated...
The EGR code could be unrelated...I'd still take a look at the EGR ports...then take the post cat o2 sensor out and see if it's all hogged up or eroded...
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You made three mistakes. First, you took the job. Second, you came light. A four man crew for me? F**king insulting. But the worst mistake you made...
...empty gun rack.
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