Join Date: May 2010
Location: Orange County, CA
I had replaced my PCM in order to solve mysterious sensor issues. I would reset PCM, and all was well for a short time. I would start her up, sometimes CEL would come on on cold start, then Idle rough. I would turn off and restart, and no CEL.
I added a small amount of carbon conductive grease to the PCM pins with a q-tip, and the problem went away...I chased lots of false codes, IAC, MAP, TPS, NO O2 signal, trans was flashing Temp sensor, and output speed sensor. ALL went away after greasing the pins. 300 miles later, no issues..