Join Date: Dec 2008
Location: Tyler, TX
Thanked 407 Times in 347 Posts
I agree with the voltage regulator being bad. But you have TWO, and the question is, which one.
Disconnect the regulator wire (quick connect) on the easiest one to reach, that will disable that alternator. If the problem still exists, it is the OTHER one at fault. Obviously, if it is now fixed, you found the culprit.
BTW, the regulators can be replaced inexpensively in your garage, if you can change oil, you can do this and save $250 on a "rebuilt" alternator.
If you decide because of time, mileage, or use that you should have a rebilt replacement, I STRONGLY suggest you look in the phone book for a LOCAL rebuilder (most auto machine shops can do this, or tell you where), and use them. It will NOT cost you more $$, and you get a better product.
'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin
I vote for LIBERTY!