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08-24-2009, 01:43 PM
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#1 |
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Registered User
Join Date: Aug 2009
Location: Everett,WA.
Posts: 11
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HELP!!! Charging issue.
Thank you in advance for any and all help. Well I have a 1979 C20 with the 5.7L 350. It runs good but I am encountering a charging issue. New battery, all connections look good, alternators been tested both on and off vehicle and passes. Here's the issue. Everytime I jump on the freeway I get a dip in voltage. Lately it's been into the red. One night it dropped down so far I pulled to the side of the road and let id idle and it jumped up just past 13 then came back down to just below. Put it in gear to take back off and it begins to drop. Got it home and at idle jumped back up to 13 and stayed while idling. Any ideas??
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08-24-2009, 01:44 PM
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#2 | |
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Registered User
Join Date: Nov 2007
Location: Franklin Indiana
Posts: 635
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Re: HELP!!! Charging issue.
Quote:
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My Truck's not leaking its marking its territory! Last edited by 87Bob; 08-24-2009 at 01:48 PM. |
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08-24-2009, 05:08 PM
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#3 | |
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Registered User
Join Date: Mar 2009
Location: MD
Posts: 417
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Re: HELP!!! Charging issue.
Quote:
Last alternator my father had rebuilt at a "good" shop (turns out they changed ownership after the last time we were there) they rebuilt the alternator and it overcharged to the point it cooked the battery popping the tops off of it and bubbling acid out onto the hood and overloading the computer. Definately make sure they're a good rebuilder.
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2006 Silverado Crew Cab 1500 4x4 5.3L automatic 1986 M1008 CUCV 6.2L Detroit Diesel TH400 4.56 Detroit Locker rear NP208 1973 K20 "Silverado" 350ci, HEI, TH350, NP203 with 2wd conversion, A/C, power windows,tilt wheel, dual tanks. My '73ish K20 thread My 5yo son claims it as his. 1987 V20 Custom Deluxe 350 TH400 NP208 "farm truck" getting parted out. 2016 Nissan Altima grocery getter/commuter |
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08-24-2009, 05:46 PM
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#4 |
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Registered User
Join Date: Mar 2006
Location: Rapid City, SD
Posts: 96
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Re: HELP!!! Charging issue.
Maybe at the higher highway speeds and RPM the belt is slipping?
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Keith ------------- 1980 C-10 1981 C-30 |
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08-24-2009, 06:09 PM
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#5 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: HELP!!! Charging issue.
the regulator inside could be bad at high rpm im betting its the alternator... for giggles change it with another and see what happems
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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09-03-2009, 11:40 AM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Everett,WA.
Posts: 11
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Re: HELP!!! Charging issue.
Turns out it was the belt... Go figure. Changed it out with a new gator back and Pow! Voltage looks wonderful. No dips when all accessories are on. Thanks!
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09-03-2009, 12:04 PM
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#7 |
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Registered User
Join Date: Sep 2008
Location: Bailey, NC
Posts: 2,462
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Re: HELP!!! Charging issue.
Glad you found the problem. Usually if the regulator was bad, you would notice it at idle.
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Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT |
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