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Alternator issue? Help please!
I just got this truck a few weeks back and towed my camper with it for the first time last week. On the way home, at a stop, I noticed the battery light was on, but the gauge read normal. As I got the rpms up over 1500 or soi, the light went out, gauge remained constant the entire time. This continued until I got home and parked.
Went out today to move the trailer and unhook and still the same thing, so I got out the battery tester and a voltmeter to do some trouble shooting. Here are my results:
Engine off -11.9v at battery and big alt terminal
Engine running- 11.8v at battery and main alt terminal at idle with battery light on and absolutely no change as rpms are raised except the battery light goes out between 1200 and 1500rpm
I am guessing the voltage reg is bad?
I hate to spend $200+ on a parts house reman unit if it is just the regulator and it apparently can be replaced for under $50. Which route should I go? SHould I take it to the local starter shop and have them rebuild it with instructions to just replace the voltage reg? Should I order the part and replace it myself? If the latter, where to order from? I have found several listings and it seems it would be easiest to call them to try and get the correct regulator.
Should I just pony up the $$ and get a reman unit from NAPA?
Should I just pull the alt out and test it on a test bench before doing anything?
I only use this truck for towing, so it being down for a while is not a problem.
Any help is appreciated!
Last edited by Edman87k5; 01-02-2011 at 02:49 PM.