Labor Day Putting down your wrenches or time for MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
====
| | | Forums66 Topics128,010 Posts1,055,299 Members48,419 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2022 Posts: 113 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 113 | I am not sure why my Amp meter always indicates a discharge in the morning while it is near freezing here in the Mojavi desert,then as the truck warms up a bit then it starts charging... | | | | | Joined: Mar 2019 Posts: 1,003 'Bolter | | 'Bolter Joined: Mar 2019 Posts: 1,003 | i dont really have an answer to your question, but some charging systems require a "goose" of the go pedal to hit a higher rpm to get the charging system started. Maybe try a "goose" or 2 and see what happens? Not sure what your driving or what charging setup you have for that matter?? Post some more info and im sure you'll get better responses. Good luck. | | | | | Joined: Nov 2002 Posts: 394 'Bolter | | 'Bolter Joined: Nov 2002 Posts: 394 | Here lately, starting up my truck in the morning I have a discharge indication on my amp gauge, I'm thinking as cold as it has been here in the Mojave desert it's affecting my reading, now as soon as it warms up say 5 minutes or so she then begins to start charging? The battery is fully charged, so I don't believe that would be the problem.. What do you think there Bolters ????? | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Check the tightness of your fan belt.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Mar 2010 Posts: 10,270 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,270 | Check the voltage at the battery. Then pull the throttle knob out a bit to increase the RPM and see if the needle moves to the plus side. Check the voltage after you pull the knob out a bit and compare it to the reading prior to pulling it out. This should let you know if it is charging the battery at idle or only at above idle.
Last edited by 52Carl; 01/28/2022 2:57 AM.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Jan 2022 Posts: 113 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 113 | It's just the ol 235, six with a alternator. Like when I leave from work at 3:00 p.m. sun is out and it has warmed up to say about 70 or so it stays over on the charging side whether I am at idle or say around 1000 r.p.m.s.. | | | | | Joined: Jan 2022 Posts: 113 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 113 | Thanks for the info., I got thinking maybe if there was a bunch of crud and stuff all over the coils I would g o ahead and kind of clean it up.. | | | | | Joined: Jan 2022 Posts: 113 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 113 | Thank you for the info. I will keep my eye on it | | | | | Joined: Jan 2022 Posts: 113 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 113 | Thanks for the info. I will keep my eye on it.. | | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | OL,55 RPM has to get hi enough to prime,certain alt. combinations prime easier than others,once it primes should set at idle and charge...lights brighten-up. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Check the tightness of your money belt.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn | | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | glennstowing On my winch truck installed a belt and added sheave so it would charge at idle. Never even dreamed fan could get into it. Fired-up worked fine,happened to see fan cleared by about 1/16 th. so you learn !! | | | | | Joined: Feb 2016 Posts: 1,982 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,982 | To me it sounds like you need to check and clean the voltage regulator contacts, the regulators are temperature sensitive. The shop manual has a chart of voltage settings based on the temperature of the regulator.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| | |
| |