voltage regulator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**bignbad** · 04-25-2011, 04:12 AM

What cause a external voltage regulator to go bad with in 2 months?I got it form napa if anyone asks.She's not charging the Battery.Put a new one in and its fine.But I dont think they should go bad in a month or two.....

Jeffs70 · 04-25-2011, 05:16 AM

Quote:

Originally Posted by bignbad

What cause a external voltage regulator to go bad with in 2 months?I got it form napa if anyone asks.She's not charging the Battery.Put a new one in and its fine.But I dont think they should go bad in a month or two.....

If I am correct here the voltage Regulator on our trucks should not ground to the body of the truck. I remember years ago I changed mine and all the screws had to be replaced because they are rubber coated? and if they touch the body it can cause problems? least that is my two cents but I could be wrong.

also make sure about corrosion in the fuse box and on the fuses. a good ground from the frame to the body. just some tips maybe to look for. hope these help.

JimKshortstep4x4 · 04-25-2011, 05:35 AM

I have had good luck with the original Delco regulators but very poor luck with the new ones. I don't buy new regulators for the same problem that you had. They don't seem to last. If one of my regulators go bad I replace it with another used one, (which is seldom). The other option is to replace the alternator with the newer internal regulators which works out well.

The original regulators have a ground wire from the regulator to the radiator support and without the ground the regulator will not regulate properly. The rubber mounted screws are for vibration reduction.

Jim

cdowns · 04-25-2011, 10:26 AM

good grounding is essential from regulator to core support and also the ground from core support to the frame// new stuff has crappier contacts and a poor or partial ground will cause them to burnup quick

04-25-2011, 04:12 AM	#1
bignbad Registered User Join Date: Jan 2009 Location: highspire,pa Posts: 423	voltage regulator What cause a external voltage regulator to go bad with in 2 months?I got it form napa if anyone asks.She's not charging the Battery.Put a new one in and its fine.But I dont think they should go bad in a month or two..... __________________ '72 chevy k20 '06 H-D Springer softail http://www.bluemooncruisers.com/ http://www.enginecycle.com/ ~Eric

04-25-2011, 05:35 AM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: voltage regulator I have had good luck with the original Delco regulators but very poor luck with the new ones. I don't buy new regulators for the same problem that you had. They don't seem to last. If one of my regulators go bad I replace it with another used one, (which is seldom). The other option is to replace the alternator with the newer internal regulators which works out well. The original regulators have a ground wire from the regulator to the radiator support and without the ground the regulator will not regulate properly. The rubber mounted screws are for vibration reduction. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

04-25-2011, 10:26 AM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: voltage regulator good grounding is essential from regulator to core support and also the ground from core support to the frame// new stuff has crappier contacts and a poor or partial ground will cause them to burnup quick __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



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