bobbywalter
TRS Technical Staff
TRS Event Staff
V8 Engine Swap
TRS Technical Advisor
TRS Banner 2012-2015
TRS 20th Anniversary
Ugly Truck of Month
TRS Event Participant
TRS 25th Anniversary
- Joined
- Aug 9, 2007
- Messages
- 25,113
- City
- woodhaven mi
- Vehicle Year
- 1988
- Engine
- Transmission
- Automatic
- Total Lift
- sawzall?
- Tire Size
- 33-44
- My credo
- it is easier to fix and understand than "her"
Okay once again we've gotten out of sink with what we're saying to each other.
Each time someone uses an abbreviation I don't know I have to look it up.
So what's pcm does again.
the pcm is the eec. when you pull the main ground and leave the power side of the battery hooked up there are things in the car that will always be looking for a ground.....there is keep alive power on various devices....the eec/pcm....which in this case is a eec4 can allow certain power back through the sensors like the maf ect....or there could be blowed diodes internally letting 37/57 juice stuff ect.
or. your icm power wire is broke and grounded somewhere and its completing the potential circuit....as it is the only ground for the keep alive crew.