Battery light came on and now the car wont start

10

Asked by Mar 23, 2014 at 11:51 PM about the 1999 Chevrolet Cavalier 4 Dr LS Sedan

Question type: Maintenance & Repair

Alright so heres whats going on.

My roommate has a 99 cavalier with the 2.4l engine. He told me his battery light came on
so he purchased another battery and the light was still on. After the car stalled on him, i
checked the voltage and it seemed the alternator had went.

I replaced the alternator as well as putting in the new battery and now will the light not go
off, but the car wont start.

Im not sure whether this would be a ground issue from the negative cable for the battery
or what but please help.

7 Answers

246,815

Battery light is the alternator is not charging and not the battery. Check your connections, what is the voltage on the battery running, at 14V? If not, the new alternator is faulty. Is it a rebuilt one? 50% of them are bad out of the box.

2 of 2 people found this helpful.
10

it is a rebuilt one however i tested the batter and it came up at 11.9v. i was able to get the car started on a jump start but through further analysis it seems the accessory belt is not tight enough. This being the case could that have anything to do with it?

246,815

Battery should be 12.3V or higher with the engine off and a proper start. What is the voltage with the engine running?

1 of 1 people found this helpful.
10

with the engine running it jumped to 12.5 but once the jumper cables were taken off the battery voltage slowly decreased.

1 of 1 people found this helpful.
20

I am having the same problem. Did you happen to figure it out?

2 of 2 people found this helpful.

Your alternator is faulty bring back get a new one you should be 13.2v when vehicle is running

13.2v or higher up to about 14v over that your system is over charging

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