1997 buick park avenue, 3800, 190,000 miles

1997 BUICK PARK AVENUE
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DEWEY54J
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My car died on the way home from work about 10 days ago. checked and replaced battery since it was about 3 to 3.5 years old. did some more checking and looks like the alternator is bad. checked output voltage and had the local parts store check it. It was bad. replaced and about a week later the alt. died again. we checked it again and it was bad. replaced wwith a second alt. and checked the voltages on the digital read out and it stays around 12.5 to 13v. I'm thingking there is a fuseable link between the two or the computer module may be killing the alt.
Oct 18, 2007 at 12:24 PM
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CHEVY22
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i think your on the right track , three wire system , ground , f terminal wire is grey and this in alt input to the pcm and the l terminal of the alt which is red and also feeds to the pcm this wire is output , you can use your digi volt meter and see whats going on at each wire , i think the voltage is still low but if the battery is not fully charged you will see different results

jim
Oct 18, 2007 at 4:12 PM