Electrical Gremlins Please Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ktlx1 · 10-03-2007, 08:10 PM

All, my volt meter is pegged at 18 volts whlie driving, when I turn the lights or any other electrical item on, volts drop to 14, then surge back and forth from 14 to 18. Lights in the truck get brighter and dimmer when the volts surge. New battery and voltage regulator, could this be a bad altenator. Please help electrical is so frustrating.

*ksjh1316* · 10-03-2007, 08:40 PM

I would think so easy check there are a lot of battery/service statations that do free alt checks be an easy way to cross it off the list at worst

brianthelion02 · 10-03-2007, 08:46 PM

Sure does sound like a faulty regulator!!!!!!!

**68 Stepside** · 10-03-2007, 08:49 PM

Have you been able to verify the 18 volts at the battery, with the truck running? I've had extremely limited experience with an external voltage regulator, so I can't be of much help, but I will say it sounds like a definite overcharging problem via your gauge. It would be best to verify the voltage at the battery if you haven't already done so, and go from there.

cdowns · 10-03-2007, 08:51 PM

i like gremlins

RJGeister · 10-03-2007, 10:29 PM

It sounds like the voltage regulator. You neglected to mention if it is external or you upgraded to an alternator with an internal regulator. I have heard that you could repair an external regulator. An internal one cannot be repaired, it would need to be replaced.

**Boog** · 10-03-2007, 11:15 PM

Cdowns. I can't think of a better use for a Gremlin.

10-03-2007, 08:10 PM	#1
ktlx1 Registered User Join Date: Sep 2002 Location: Clover, SC Posts: 15	Electrical Gremlins Please Help All, my volt meter is pegged at 18 volts whlie driving, when I turn the lights or any other electrical item on, volts drop to 14, then surge back and forth from 14 to 18. Lights in the truck get brighter and dimmer when the volts surge. New battery and voltage regulator, could this be a bad altenator. Please help electrical is so frustrating.

10-03-2007, 08:40 PM	#2
ksjh1316 Account Suspended Join Date: Jul 2007 Location: Wichita KS Posts: 1,599	Re: Electrical Gremlins Please Help I would think so easy check there are a lot of battery/service statations that do free alt checks be an easy way to cross it off the list at worst

10-03-2007, 08:46 PM	#3
brianthelion02 Overdrive club Join Date: Sep 2007 Location: apache junction, arizona Posts: 819	Re: Electrical Gremlins Please Help Sure does sound like a faulty regulator!!!!!!! __________________ 1971 c-10 1951 3100 chevy 1970 chevy c-30 Sold!

10-03-2007, 08:49 PM	#4
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Re: Electrical Gremlins Please Help Have you been able to verify the 18 volts at the battery, with the truck running? I've had extremely limited experience with an external voltage regulator, so I can't be of much help, but I will say it sounds like a definite overcharging problem via your gauge. It would be best to verify the voltage at the battery if you haven't already done so, and go from there. __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

10-03-2007, 08:51 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Electrical Gremlins Please Help i like gremlins Attached Images __________________ 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

10-03-2007, 10:29 PM	#6
RJGeister Retired Air Force 87-09 Join Date: Feb 2007 Location: Bonaire, Georgia 31005 Posts: 284	Re: Electrical Gremlins Please Help It sounds like the voltage regulator. You neglected to mention if it is external or you upgraded to an alternator with an internal regulator. I have heard that you could repair an external regulator. An internal one cannot be repaired, it would need to be replaced.

10-03-2007, 11:15 PM	#7
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,514	Re: Electrical Gremlins Please Help Cdowns. I can't think of a better use for a Gremlin. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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