More BS Alternator issues I cant figure out

Have Zack bring the car to Georgia. I personally guaranty that it will go home fixed and Zack will go hime in no worse mood than he is usually in.
 
ChiTownMaraud3r said:
Actually this was the first thing I tested. No discrepancy between alternator engine ground and chassis while running.

My ford mechanic buddy was also stumped and when he asked other techs today, they suggested the alternator to be replaced with a clutchless unit as the clutch can be the culprit when spinning in reverse. Hmm...


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The clutched pulley is sitting in a box in your trunk.
 
ChiTownMaraud3r said:
Actually this was the first thing I tested. No discrepancy between alternator engine ground and chassis while running.

My ford mechanic buddy was also stumped and when he asked other techs today, they suggested the alternator to be replaced with a clutchless unit as the clutch can be the culprit when spinning in reverse. Hmm...


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It wouldn't charge at all, it would just freewheel. Besides, the clutched pulley protrudes out a bit and would likely be digging into your front timing cover with it mounted facing backwards.
 
I kicked the issue to my eletrical engineer friend. I am at a loss. The only experience I have is with an Expedition with a Walmart battery job. They convinced the little old lady that it needed new harnesses too. they crammed 2 ground wires in a harness made for one. The problem being that most of the harness was painted. It was getting enough intermittent ground to start....sometimes. Back to the issue at hand.

I really have no idea what signals are being sent from the PCM to the alt. Are there multiple singals (I was thinking that there are at least 2), and did you test all of the wires between the alt and the PCM. It really sounds like you are only running on battery. 12.5-12.6 sounds right for a fully charged battery with no load. How long was the drive before it dropped down to 12V and stopped running?
 
On a side note, my EE did mention that car electronics are good for load dump voltages of up to around 60V (short burst). His direct quote was something about if 18V fried a car, there would not be very many cars running around.
 
I have an aftermarket alternator from Rock Auto. Does it have a clutch in it? I forget the brand but I can look it up.

Christ the prices have skyrocketed. I think I paid $65.00 for mine 2 years ago. Brand new.
 
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