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2001 Ford Explorer?

Tiny
MIKET133
  • MEMBER
  • 2001 FORD EXPLORER
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
The battery gauge is reading as high as possible, the overdrive indicator is showing that it's off and it won't switch on, when I put it in reverse it dies. When it is idling it revs up and down. I have no clue what would cause this. I unhooked the battery and waited 15 minutes then reconnected it but it did the same thing
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Friday, June 27th, 2014 AT 3:48 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
If the Alt gauge is pegged, the alternator is overcharging and could cause serious damage to the electrical system. This is most likely the result of a faulty voltage regulator. I need you to try something for me. All you will need is a multi meter (volt gauge).

Follow these directions and let me know what you find. NOTE: Do Not run the vehicle other than to do the test. If it is overcharging as you described, it could cause a fire.

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

Let me know what you find.
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Friday, June 27th, 2014 AT 8:39 PM
Tiny
DIO0001
  • MEMBER
  • 1 POST
I would say to check the voltage regulator on your alternator.
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Sunday, December 6th, 2020 AT 6:51 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
Hi,

That isn't a bad idea. However, the link I attached above will provide the info necessary to determine if the regulator is working.

Let us know what you find.

Take care,
Joe
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Monday, December 7th, 2020 AT 6:20 PM

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