2001 Ford Explorer?

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

Friday, June 27th, 2014 AT 3:48 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 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

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

JACOBANDNICKOLAS

MECHANIC
110,176 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