I'm a novice, so I'll have to look at it. I learn very quickly though. I was reading an article today online and I see I'll really need to use a oscilliscope to read for drop outs and spikes, and also do a wiggle test. There's just no other way. I'll try doing that on the tps wire all the way down to the ECM/PCM module. That oughtta do the trick! I hope.
That way I can find that short and/or replace the ECM/PCM. It can only be those two things right? I will have to print this diagram out of the electrical system, but I know where the wires are to the tps system and what they look like. I bumped the back of the pigtail today where the tps is while the engine was running and there was a fluctuation in idling. Then I bumped it and pressed it in and wiggled it a little bit and the van cut off. It never did that before this mechanic cut the old pigtail off and spliced on a new one, so I'm assuming there is a dead short somewhere in that wiring and also the ECM may need replacing altogether. Maybe there's a short and also the ECM is thrown off from reading so many different voltages over the times it messed up. I don't know.
I just wish I new where to get that wiring besides the dealership. Maybe I just take it all off, take pictures of it all, and go to radio shack or an electronic supply store and match the wires and rewire it myself.
Saturday, October 15th, 2011 AT 3:30 AM