Voltage Drop Question??
09-12-2011, 03:22 PM
#16
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Year: 2000
Model: Cherokee
Engine: 4.0L I-6
Ok, so what else would cause the voltage to drop if the battery seems fine? (since it starts up with no hesitiation) Also assuming the Alt. is fine?
I guess I don't understand what a few of you are thinking the issue is?
I guess I don't understand what a few of you are thinking the issue is?
09-12-2011, 03:55 PM
#17
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Year: 1999
Model: Cherokee
Engine: 4.0l
Well if you want to know for sure you should do what i did.I went to autozone and a guy there told me that if i wasnt sure it was the alt. I can just go back and reutrn it. and to my luck it was my alt. this was the thread i made the day it happened to me: https://www.cherokeeforum.com/f59/damn-103780/
09-12-2011, 04:30 PM
#18
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Year: 2000
Model: Cherokee
Engine: 4.0L I-6
Im going to hit autozone on the way home. I called & they said they'll check the Bat, Starter & Alt in that order.
So we'll see...
So we'll see...
09-14-2011, 11:05 AM
#19
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Year: 2000
Model: Cherokee
Engine: 4.0L I-6
So last night I pulled the Alt & took it to Autozone. It screamed like a pig on the tester & failed with flying colors!
So i was happy to know exactly what the problem was.
Wrenching time for removal of old & new install was 40mins... Not bad for the 1st alternator i've ever done... *Patting my own back*
So i was happy to know exactly what the problem was.
Wrenching time for removal of old & new install was 40mins... Not bad for the 1st alternator i've ever done... *Patting my own back*
01-25-2012, 03:39 PM
#21
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Year: 1986
Model: Cherokee
Engine: 2.5L turbo, 4.0L tb swap, ported head ect
So i was heading to work today & my voltage dropped completely. When I got to work I popped the hood & disconnected the negative battery terminal & the motor instantly died.
Im not a mechanic, but im assuming its the alternator that needs replacing? Over the last couple days I was getting a faint, but weird hum out of the engine bay too? Guessing that had something to do with it too...
Any guidance is appreciated.
Thanks!
Im not a mechanic, but im assuming its the alternator that needs replacing? Over the last couple days I was getting a faint, but weird hum out of the engine bay too? Guessing that had something to do with it too...
Any guidance is appreciated.
Thanks!
01-25-2012, 07:04 PM
#22
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Year: Several
Model: Cherokee
Engine: 4.0
You told the clue early on - the humming noise - one of the alternator diodes was shorted. That's why it screamed in the tester too.
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