Got a little problem and wanted to see if anybody else has the same thing.
In the VCM scanner readout my oil pressure reads in the negative and bounces around -15 psi.
The dash gauge looks like it's a little high but with out actual numbers on the gauge I can't tell the actual reading. It's definitely not burying the needle in the negative.
I doubt it's the scanner since I can't find any other post about it, but I have to start some where.
2001 Monte Carlo
ZZP PCM
I assume it's for your monte carlo??
If so, your oil pressure sending unit does not really send a signal to the PCM for oil pressure. It sends a signal to the dash to sweep the gauge and also sends a signal to produce the oil pressure warning light, and at that point the motor is dead and can't be saved.
The bonneville is the same way. The grand prix's only have a warning light on the dash, the PCM does not ever know the real oil pressure.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Thanks for the info. I guess i'll take that PID off my scan.
2001 Monte Carlo
ZZP PCM
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