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AH! Gentlemen I can't thank you enough for the detailed input! It had a hard time starting this morning (which leads me to believe I need to clean the IAC), so we drove to Advanced to pull some codes. Came back as a bad TPS, which only seems to run about $40. HOWEVER, now I'm gonna check...

I'll give it a go! Thanks again, and I'll report back if it cures it.:D

It's a 1996, with a 4.0. Please feel free to ask whatever questions you need, I'll try and get a quick response from my brother.:shades:

Hey! I drive a CJ5 jackhammer myself. I've been dealing with it for a couple of years now, and it's caused all SORTS of problems. (Fan nicking the radiator, putting the battery through repetitive shock, etc.) Big question- do you have a FIBERGLASS body, or a steel body? I'm runnin the 'glass...

Hey guys, long time no posts- So my brother got himself a Jeep. Got a few minor problems, but all in all, good shape. I need help diagnosing one in particular. Changes- The fan and temp gauge stopped working and the previous owner installed an aftermarket gauge, and a elec. fan that has a...

I'll bet! One day, one day... I've got plenty on my plate already... Like making a hard top.

Yeah. Too true... Luckily I carry a jumpbox everywhere, it gives me decent enough charge to get home at least most times... And last year on the really snowy days I would just grab a cup of joe and head out pulling people from snowbanks and jumping cars for a pass time. You get a LOT of...

Thanks a bunch John! On Friday I'm pulling the Alt. out to have it tested, as that could easily be the problem, and if all is well with the unit it's gonna be rewiring time. In which case I'll be reporting back here to make sure I'm doing it right. You've given me some pretty damn good...

Glad to hear it went well!

I'm curious too...

Thanks for the sympathy Jon! It's my primary vehicle too... Not too smart when it's 35 y/o, but hey, sometimes we can only afford to have toys that ARE tools. Sigh. It's a passion.

I almost wanna cry.

Thanks Mikey! I'm taking this thing to the parts shop to get it tested. There's something fishy going down. If there's no external voltage regulator, than I SHOULD have a resistor? Or some such thing to convince the alternator to put out more voltage? Hmmmm... One step closer though. You...

And I looked EVERYWHERE for a voltage regulator... Nada. That's bad right? Unless it's not a box... I have have no idea though.

Okay! Here we go. From the model information I got, this IS a one wire alternator... Here's the setup-

The alternator I just got and installed is a powermaster 8-46100. It's the stock 3.8L I6 232 engine. I don't see any boxes hanging out anywhere, but I'm going outside to look right now. I'm too out of a vehicle to not. I'll be back to you very shortly!

From reading in other forums I'm starting to get the impression that I have an internal voltage regulator? My system looks very close to what they have described in this link... Alternator diagrams Does this change what I've got problems with?:???: Should I just bring my Alt. in? So...

Okay. I'm bad with wiring for the most part. I can repeat what I see, but I can't come up with answers very well. But here goes. There is a two pronged plug. Two wires lead into it. One of the wires comes FROM the plug and leads TO the post on the back of the alternator. A wire also leads...