Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
Yea, all the speculation about the PCM thinking its in overdrive, etc.... means nothing.
Overwhelmingly likely, if he just troubleshooting by dropping in a similar PCM that is NOT for his vehicle/engine, its barely adapting and working in some conditions and the highway speed is outside the PCM's ability to adapt, so its runs like crap, probably the wrong spark advance and/or fuel injector pulse width for that condition.
Overwhelmingly likely, if he just troubleshooting by dropping in a similar PCM that is NOT for his vehicle/engine, its barely adapting and working in some conditions and the highway speed is outside the PCM's ability to adapt, so its runs like crap, probably the wrong spark advance and/or fuel injector pulse width for that condition.