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Thread: Bad PCM??????
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06-06-2012, 08:22 AM #1
Bad PCM??????
I have had a persistant P0174 code I've been looking at for a while. Make a long story short, it came down to either the harness or the PCM. Check the harness last night, its fine.
My upstream O2 on the pass side would periodically show +25% STFT and +50% LTFT's, plugs completely gas fouled.
I looked at O2 voltages (key on, engine off) with my predator and 3 out of 4 were fine, this one showed 0 mV. Changed to another O2 sensor and same thing.
Can this be a bad PCM as I can not think of anything else it can be.
Jon
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06-06-2012, 09:18 PM #2
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