My car was having problems whenever I went of 3k RPMs. It would backfire, surge, and generally just do crazy things. Well, a couple of days ago, I had my laptop hooked up to it and saw that I had picked up an ESC code (but the check engine light had never came on). I cleared the code and was going to check it at a later date to see if I got it again.

Well yesterday, I thought lets just look at the ESC to make sure I hadn't done something to one of the wires (I had to repair the wires to my windshield wipers a couple of weeks ago). Well sure enough the wires were loose to the point that when you plug the connector in they wouldn't make a clean connecion. Well, I kind of rigged it up and drove the car to Indy and it ran great, no backfiring, surging, etc.

Just as I was getting to where I was going it started acting up again. So when I left, I tried rigging it again. Well the car started it ran for about 1 second then died. I was not able to get it started after that and had to have it towed home. I think two of the wires in the plug grounded out when I was rigging it.

I think I fried my computer because I can't any codes when bridging the ALDL. I'm going to hook my laptop to it and see if I can get anything.

Here's my question (after the book above). I cut a plug off an extra wiring harness I have and wired it to my harness. What is the resistance of these wires supposed to be at the plug tip? Did I fry my ESC also (I've already put another one on, but would like to use the old as a backup if needed). Any other things I should check or be aware of that I could have screwed up.

Thanks for any help.

Vader,if you read this, I've been around just haven't had time with the new baby and trying to open a new store to respond much around here. Had BOR perfected the ESSENCE for the pooterball express????

Sparks a flyin'

 

Sparks,

Good to see you're still with us. Getting any lately? (Sleep, that is.)

The ECM may or may not be damaged. Testing the ECM/ESC communication by resistance readings of the wiring is not very helpful. You'd almost need a scope or logic probe to monitor communications because the signal to the ECM occurs so rapidly. The ESC Control connects to the ECM with only one wire (other than ground).

The black wire on terminal 'C' connects to the ECM input for spark retard signal. The ECM decides what to do with the signal and drives the EST (distributor module) accordingly. The dark blue wire on terminal 'E' of the ESC connector is from the detonation sensor. The pink/black wire on teh ESC terminal 'B' is the 12V supply to the control, and the brown wire on 'D' is the chassis ground connection. The ESC will signal the ECM by pulling down (grounding) the retard signal line to the ECM, so unless you shorted a power wire to this connector or wire, you really shouldn't have damaged the ECM.

Good luck.

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Later,
Vader
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"I'm'a do Things My Way - It's My way or the Highway."
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