Pontiac Trans Sport 1994 - Major Electrical Problem

Mar 12, 2015 4 Replies

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Mitch 11 years ago

I have a 1994 Pontiac Trans Sport that is having strange electrical issues. I went to turn the engine over and the gauges started going crazy and strange beeps from the chime module then nothing. Battery level is fine, all fuses check out. I do have an inverter wired in to the glovebox lighting wiring which is smaller gauge wire than it should be. I took the panel off underneath and noticed some overheated/scorched wiring leading to the middle (white) connector going to the engine control computer. Have I fried the computer or what to do?

-stuck in Colorado

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clare 11 years ago

First thing - check the engine ground. My 1995 TransSport did that one day and I found a broken ground wire between the engine and the rad frame.

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Mitch 11 years ago

will do, what does this look like- where is the easiest place to access and check it? underneath the vehicle? between engine and radiator? .. will go look right now thanks!

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Mitch 11 years ago

Turns out it was the smaller ground cable. Now it runs but seems to still be having issues- feels like it is missing on acceleration like something is still not right with the computer. Going to investigate further, thanks for your help!

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clare 11 years ago

I never did get my '95 working like I thought it should. Had a Delco rebuild engine in it and I couldn't pull my 17 foot camper more than

30 miles without throwing the CEL. My 3 liter Aerostar pulled it effortlessly. It seemed to be hard on O2 sensors too - went through 3 in ender 100,000km. (that's as far as the rebuilt engine lasted).

Basically you have to remember you are driving a GM. Garbage Machine. Won't own another one unless it's given to me!!!. My last good GM was my '28 Chevy National -and it was pretty rough!!!

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