a while back i had TQ arm mount issues and while fixing it, i unplugged the speedo connector from my trans. But i forgot to reconnect it, and drove a while, the car was running like crap, it would even backfire. Perhaps one of the wires to the trans got burnt or ripped up, or maybe even the sensor itself went bad. In my case, it was several issues, but once i reconnected the plug it got a lot more driveable. For me though, it did throw a code.
In my case, my main issue had turned out to be a "jet" performance module that piggybacks onto the ECM(installed only a week before) and it had the harness wires rubbing through on the hood hinge, add that and rain and i had all sorts of issues, i threw the module in the trash and fixed the wiring. After that, all was good again.
Last edited by V; 11-20-2006 at 02:29 PM.
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