67 burning out voltage regulators !!
Thread Starter
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
67 burning out voltage regulators !!
My 67 327 300 HP has started eating voltage regulators. I am on my third one from Ecklers. 
I seem to be overloading the unit somehow and burning them out. I think it might be my power window switches pulling too much of a load, but I'm not sure. Any ideas will be greatly appreciated.
I seem to be overloading the unit somehow and burning them out. I think it might be my power window switches pulling too much of a load, but I'm not sure. Any ideas will be greatly appreciated.
Last edited by pmihaltian; Nov 13, 2007 at 08:54 AM. Reason: spelling
Thread Starter
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
Thanks, guys, this is great stuff! I'll definitely check it out. Wouldn't surprise me a bit if it's a bad batch of voltage regulators! But the ground wiring is definately a lead. Than ks again. 
Thread Starter
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
I still have the same problem
I have tested the regulator at Auto Zone and it check out ok. I did find a freyed ground wire leading to the regulator. I have since repaired that wire and several others. However, I still have the same problem, generator light is on and won't turn off, and ammeter shows a discharge.
I plan to have the alternator tested, I figure that's the next logical step.
Any other ideas?
I plan to have the alternator tested, I figure that's the next logical step.
Any other ideas?
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Because you said you are on the 3rd voltage regulator I think you have a problem with wiring or grounds.(make sure the alt. belt is not slipping)In your case I would run temporary extra grounds from battery neg. terminal to the alt. case and the voltage reg. case.
Next you can bypass the voltage reg. and put your alt. into full output.With the engine running remove the small 2 wire connector on the alt..One of the terminals in the alt. should be marked with an F.Take a jumper and connect the F terminal to the large pos. term. on the back of alternator.If you hear the alternator whine its probably working.Check your amp. meter or check the voltage at the back of alternator.If this makes your alt. work then your reg. is not working-could be reg. or wiring.Let us know what happens.
Next you can bypass the voltage reg. and put your alt. into full output.With the engine running remove the small 2 wire connector on the alt..One of the terminals in the alt. should be marked with an F.Take a jumper and connect the F terminal to the large pos. term. on the back of alternator.If you hear the alternator whine its probably working.Check your amp. meter or check the voltage at the back of alternator.If this makes your alt. work then your reg. is not working-could be reg. or wiring.Let us know what happens.
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Thread Starter
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
Problem solved !
Thanks so much for all of your help with my electrical problems, the solution wouldn't have been possible without the Forum members!
After replacing the alternator and voltage regulator (yet again), and then having the problem where the car wouldn't shut off even after the key was turned off, I decided to take the Corvette Forum's suggestion of replacing the old-style voltage regulator with the Wells VR-715 electronic, solid-state version. Not only did it solve the problem of the constant discharge or the car not turning off, but the car starts easier and quicker than it ever did in 18 years of ownership!!! I will never use an old-style of voltage regulator again, that's for sure.
I can't tell you how thrilled I am. Thank you so much for ending this 6 weeks of frustration, and finding the solution for me.
After replacing the alternator and voltage regulator (yet again), and then having the problem where the car wouldn't shut off even after the key was turned off, I decided to take the Corvette Forum's suggestion of replacing the old-style voltage regulator with the Wells VR-715 electronic, solid-state version. Not only did it solve the problem of the constant discharge or the car not turning off, but the car starts easier and quicker than it ever did in 18 years of ownership!!! I will never use an old-style of voltage regulator again, that's for sure.
I can't tell you how thrilled I am. Thank you so much for ending this 6 weeks of frustration, and finding the solution for me.