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well on my car someone musta changed the comp to a newer one cause it was reading way to fast. it said i was going 90mph when i was doing 55. i got everything under the sun to fix it.(included a new comp) and it still wasnt fixed till i changed the chip from (jy) i think i got mine from a 90 grand prix. The chip is under a cover yea that thing i think u know what im talking about get a couple,(pocket them) i dont condone it but buy something else small ya know. hang in there i was about to give up too.
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YES!! I finally got the Buick fired up yesterday!
I kept testing and testing, and eventually decided to go ahead and buy a new ECM. That still didn't fix it, and I even checked all of the critical wiring from the ECM. All the grounds were good, wiring to the coolant temp sensor was good, etc. It all appeared just fine, but the car would still not spark. It was still acting like it wasn't getting signal from the CPS, but I could see the signal on the wires if I stuck a meter in the connector and cranked the car over.
Finally as I was thinking about it yesterday I started wondering if the electrical connectors themselves were the problem. I tried to be careful while testing, but apparently the test leads on my voltmeter spread out the insides of the connectors just enough that they weren't firmly making contact with the pins on the ICM. I pulled everything out and tightened up the insides of the connectors, and it started making spark!
Drove it around quite a bit last night and it's running great. I'll flush the coolant and change the oil tonight and it should be good to go. Thanks everybody!!Comment
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