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Unread 07-13-2010, 01:50 PM   #1
rocketag98
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1997 TJ Wrangler 
 
Join Date: Jul 2010
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97 TJ Alternator Replacement Amperage

I have a 97 4-cyl TJ that I recently resurrected from the dead (it has been garaged and not started for two years). Now that I have it running, I am running down my list of parts to replace and thought I'd go ahead and take care of the alternator since it was already showing signs of failing before the Jeep got garaged. I went on one website for alternators and after navigating to my year, make, and model, it gave me three options for alternators: 75, 90, or 160 amps. I believe, from what I've been able to find on the internet, that the stock alternator is somewhere around 100 amps (can't get a straight answer on that one). Since I ultimately plan on putting in a winch and additional lights, should I just go ahead and get a 160 amp alternator now to be prepared for when I make those additions? Is there anything special I should consider when getting such a high amperage alternator prior to having the equipment to utilize that extra amperage?

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Unread 07-13-2010, 01:52 PM   #2
mschviuz
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1998 TJ Wrangler 
 
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Location: Mississippi
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Sounds like you just need to start making a list of the goodies to put on the jeep!
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Unread 07-15-2010, 03:11 PM   #3
rocketag98
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1997 TJ Wrangler 
 
Join Date: Jul 2010
Location: Texas
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So then I take it that if I go from a 90 amp alternator to a 160 amp alternator, that is not a problem??? Oh yeah, I have my goody list all lined up...
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Unread 07-15-2010, 03:32 PM   #4
Jerry Bransford
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2004 TJ Wrangler 
 
Join Date: Jan 2003
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The basic alternator size is 84 amps with the upgraded alternator for a non-stripped down Jeep being 117 amps.
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tj , wrangler , 2.5 , alternator , amp , amperage , replacement , replacing

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