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1997 Isuzu Trooper Repair Question


Topics covered: 12 volt, Window, Alternator.
Mileage: 139,000 miles.

Asked on July 29, 2012

Replaced Several Aalternators

I have replaced several alternators. My latest (wilson) volts drop on hard ecceleration, and when I rolls the back windows down? It was so idles up and down a little once it's warm and the volt meter ticks/moves a little about a 1/2 volt. Is there a charging problem? Short? is It's like every one installed before is not compatable?

Avatar Asked by sammy3544

Answer

Replied on July 29, 2012

what are the voltages??

Roy

Tiny Answered by ASEMaster6371 (expert)
24,789 answers provided
Replied on July 30, 2012

The alt is steaddy at 14 volts, until the hard excelleration then it dorops to just below 12 volts. I just noticed that when I touch my turn signals the volt meter twiches, and when I roll my power windows down in the back the volts drop down to about 12 volts. This is the 3rd alt in 6 months.

Tiny Response from sammy3544
1 question asked
Replied on July 30, 2012

also, I just had they neg battery terminal replaced. They say the alt is fine because there is a technical bulletin that says it will drop, but it does all this other stuff that tells me otherwise. Seems to be very littel out there on Troopers.

Tiny Response from sammy3544
1 question asked

Replied on July 31, 2012

no, it is not normal for this to drop to 12.

first, check the belt tension. it has nothing to do with troopers but has to do with basic electric in charging systems.

start with basics. check the belt tension

Roy

Tiny Answered by ASEMaster6371 (expert)
24,789 answers provided