Alternator problem

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Jun 20, 2022 | 11:29 AM

pawpaws toy

Thread Starter

Burning Brakes

Joined: Jun 2011

Posts: 816

Likes: 11

From: lewisburg wv

Alternator problem

After replacing battery (old one internal short) I noticed the battery lamp was illuminated when switched off. After unplugging the A/B connector the light went out. After further testing noticed the B connector is shorted to the alternator housing. Also, the alternator became very hot when A/B was plugged in. Bad alternator? Any thoughts appreciated.

Jun 20, 2022 | 12:05 PM

Mrvettenick

Drifting

Joined: Aug 2019

Posts: 1,334

Likes: 225

Sounds like something is amiss with that alternator. I would get it tested. This is assuming your wiring is original and untouched.

Jun 20, 2022 | 02:19 PM

augiedoggy

Le Mans Master

Joined: May 2007

Posts: 5,007

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From: North tonawanda NY

That may be what damaged you original battery. I believe mine did that once and I found the connector wires were plugged in backwardson the alternator plug. Its been a few years but I bought a second alternator then learned I didnt need it.

Jun 21, 2022 | 06:04 PM

Motorvation

Racer

Joined: Jul 2018

Posts: 331

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From: Sandusky, OH

Quote:

Originally Posted by augiedoggy

augie…my new to me rebuilt alternator runs hot and may be 19 volts at start up. How did you determine the leads were backwards?

Don’t mean to steal thread, but inquiring minds want to know. Thanks!

Steve O.

Jun 23, 2022 | 08:27 PM

pawpaws toy

Thread Starter

Burning Brakes

Joined: Jun 2011

Posts: 816

Likes: 11

From: lewisburg wv

I had to replace alternator. Battery with internal short overladed it. New battery and a nice chrome altenator fixed everything.

Jun 23, 2022 | 08:30 PM

Mrvettenick

Drifting

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Glad it's fixed.

Jun 23, 2022 | 10:28 PM

augiedoggy

Le Mans Master

Joined: May 2007

Posts: 5,007

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From: North tonawanda NY

Quote:

Originally Posted by Motorvation

honestly I dont remember to be sure. I just remember it being the issue.. I fried the voltage regulator in the new alternator with it connected backwards so I rememeber I went to napa and picked up a new one that that was when I realized how easy and cheap they are to repair now I have 2 chrome alternators as I repaired the original too as a spare.