alternator help
03-03-2016, 02:07 PM
#1
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Year: 1990
Model: Cherokee (XJ)
Engine: 5.3 LS
alternator help
Hey guys I have a 1990 jeep Cherokee limited 4.0 4x4 and I bought it used and put in a new motor ( had one from my other jeep). Well I notice that the alternator gauge dosent read. So I figured bad alternator and since I was buying electric fans and some LEDs I figured just to buy a new 100 amp alternator because o don't know the condition of the old one. Well long story short I installed the new alternator and my gauge didn't move from the red. I have already refreshed all the grounds according to cruisers54 tips. I have yet to install thicker wire from the alternator to the relay( is that correct the wire from alternator to the actual relay and not battery post +??) and when I turn on my fans lights dim a lot ( it should be a total of about 25 amp draw from the fans together)
03-04-2016, 09:52 AM
#2
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Year: 1996
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Im thinking it could be the voltage regulator. http://www.econofix.com/alt.html good information on here. (update) im not sure if we have an internal regulator or external. should have checked when i did my alternator last week.
Last edited by CherokeeHoonigan; 03-04-2016 at 09:55 AM.
03-05-2016, 09:09 AM
#3
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Year: 1990
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Hey guys I have a 1990 jeep Cherokee limited 4.0 4x4 and I bought it used and put in a new motor ( had one from my other jeep). Well I notice that the alternator gauge dosent read. So I figured bad alternator and since I was buying electric fans and some LEDs I figured just to buy a new 100 amp alternator because o don't know the condition of the old one. Well long story short I installed the new alternator and my gauge didn't move from the red. I have already refreshed all the grounds according to cruisers54 tips. I have yet to install thicker wire from the alternator to the relay( is that correct the wire from alternator to the actual relay and not battery post +??) and when I turn on my fans lights dim a lot ( it should be a total of about 25 amp draw from the fans together)
03-05-2016, 07:08 PM
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03-05-2016, 08:15 PM
#6
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Well when i check with the multimeter I get 14.3 and my guage says 0 but screw it its not a daily so I'll just deal with it I thought it would be simple to fix thanks guys
03-05-2016, 08:28 PM
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