Electrical problems

L.RAMIREZ

MEMBER
1996 BUICK PARK AVENUE
6 CYL
2WD
AUTOMATIC
250 MILES

Sometimes my car looses power and RPM level goes crazy when I put windows up or down. When I have headlights on especially when it rains and I can turn lights off and power returns to normal but turn lights back on looses power again. Could it be a wet or bad ground?And if so where would the problem most likely be located?

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

The first thing I would do is to load test your battery to be sure it can provide enough power to work all the accessories.

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

Then check the charging system as well.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Low voltage is the most common reason for this issue.

Roy

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Sunday, February 24th, 2019 AT 6:14 PM

L.RAMIREZ

MEMBER
2 POSTS

I just put a new battery in about a month ago and the alternator has been checked. It seems to do it worse when it is raining. And I also put new alternator belt on two weeks ago. We have had a lot of rain and the inside of my car stays wet so maybe something has gotten wet or is corroded, but I don't know where to check.

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Sunday, February 24th, 2019 AT 6:39 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Got it.

That was two weeks ago.

You need to check the actual battery voltage and the charging system. You need to start with a source of power to be sure there is plenty available.

Roy

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Monday, February 25th, 2019 AT 1:33 AM