Electrical problems

Tiny
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?
Sunday, February 24th, 2019 AT 4:54 PM

3 Replies

Tiny
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
Tiny
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
Tiny
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

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