hotwrench4hire

my 91 12v keeps eating regulators, 1 every 200 miles, im stumped on this one, I ran a ground from battery to regulator, always the same thing, starts over charging, all wires and grounds look good, any ideas? thanks!

autocar56

I found that moisture had got in my connector and caused corrosion, never found a new connector so ended up cleaning it best I could and sealing it with electrical grease. I was going thru a regulator about every 2 months, that was two years ago, seems be be doing good now.

hotwrench4hire

checked that, its clean and in good order

autocar56

Bummer I was hoping that would be a quick fix for you like it was for me, if your wiring not shorting you might have a alternator problem, just some thoughts.

torquefan

Haven't dealt with these charging systems for quite a while, but back in the day I saw lots of problems with aftermarket regulators on these trucks. Diagnosed several of them as failed regulators, replaced the regulators with aftermarket units, and sent the trucks away working properly. Had several come back within a few weeks with charging system problems again which were all failed regulators. Ended up putting in Mopar replacement regulators and never had another problem with them.

Not sure if Mopar still carries these regulators, but if so, I would install one and hope for a longer lifespan.

crazzywolfie

i would also see if you can get a voltage regulator from the dealership. i have seen lots of people have issues with the aftermarket ones.

u2slow

The jobber voltage regulators are hit and miss. I just had one die after less than a year and I thought that was bad.

cougar

It's not the regulator.
https://www.dieseltruckresource.com/...alternator+101
Because of aging wiring on 20+ year old trucks, resistance builds up and contacts wear out. Your regulator is not seeing what the alternator is putting out so it thinks the voltage is low. Too many times it is blamed on a so called cheap aftermarket regulator when in reality it's your trucks wiring that is at fault. I've been through this many times with Dodges and threw away many good regulators. My latest go around turned out to be the ignition switch. Replaced that and all the problems went away. Over charging and the idle needle vibration.

hotwrench4hire

thanks for the input, I have a Dealer regulator ordered, good info cougar, i missed that thread when I was searching, will test as explained....