Bad PCM??????

[jfl330]

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

[06MonteSS]

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

no... already replied to your email...