ComancheKid45 Posted November 28, 2010 Share Posted November 28, 2010 Alright ive been chasing this issue and will continue to do so but figured Id see if I could find anything new about it here. This is my 88 4.0l AW4. What ive got here is at night with headlights and driving lights on whenever i hit a bump while off the gas my voltage gauge (which isnt really accurate to start with) drops all but into the red for a second or 2 then revives itself back to normal, all my lights dim at that time as well. If I'm on the gas going down the road it doesnt phase it, its just when RPMs are low. Ive tested votage at the battery with every single load i could put on it and I get a reading of app. 12.6v at the posts. With just headlights and driving lights i get 13.7v so the Alternator is doing its job fine, however I havent seen what it drops to when i hit bumps with a load on the alternator. My ground cable is in good shape and the terminal is tight on the battery, I'm going to rechack everything here today but was wondering if theres a regulator or something that could be going bad or knocked loose somewhere. Ill post up if i come across anything else, and thanks for any help :hmm: ;) Quote Link to comment Share on other sites More sharing options...
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