Intermittent no crank, no start issue

ERICKK11

MEMBER
1993 CHEVROLET 1500
5.7L
V8
2WD
AUTOMATIC
191,000 MILES

My truck randomly doesn’t want to start. But will with a jump and will run fine until it doesn’t want to start again. Sometimes it’s just 30 minutes and sometimes it’s more time. I tested my battery and it’s at 12.2v and with alternator running it’s at 14.0. When it doesn’t turn on I turn on the lights and when I go to crank, they dim a bit. I have yet to look at my start but figured I’d see if anyone can help or suggest something first. Also a ground wire from the filler neck isn’t grounded to nowhere but doubt that’s the problem.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Did you load test the battery or just check the voltage with a meter?

You may have a weak cell which is what I suspect it is with it being 12.2 and not slightly higher.

Clearly 12.2 is not terrible voltage but if the engine starts with no issue with a jump start shows that the amperage of the battery may be low.

https://www.2carpros.com/articles/car-battery-load-test

Let's load check it and then go from there but I suspect this is the issue. If it is not here are the next things we need to check.

https://www.2carpros.com/articles/starter-not-working-repair

Here is a guide if you need it to replace the battery. Please run through all this material and let us know what happens.

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Thanks