Alternator Replacement 84 Jeep Grand Wagoneer

Feb 12, 2005 6 Replies
J

So I've got a bad alternator and or a shot battery. I'm guessing it's both. If I'm to replace the alternator I think I'd rather get one that's relatively heavy duty. I'm not planning on putting multiple batteries in, but I'd like to power a little bit stronger stereo than the stock cassette deck.



I've been googling a bit, and have seen HO alternators, rebuilt alternators and plenty of batteries. I'm also wondering if I should be looking at anything else. The electrical system (including alternator) is under warranty, so I'm hoping to get it all taken care of in one swoop.



JP


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M

Just a heads up for you if it has V belts. A polished up belt can slip while being tight which acts like an alternator only ever charging up the battery 1/4 way or so.

I test them by taking a cold off engine and seeing if I can hand slip the alternator pulley. If I can make it slip by hand, it is shot and I need a new belt. The alternator takes a few HP to spin up under load and if it hand slips it won't charge right.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

Jay Pique wrote:

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J

I'll check that for sure. I noticed that when I turn the lights on, the ammeter dips to the negative (indicating it's drawing power from the battery) and also dips slightly when I really rev the engine a little. Should that lead me to believe it's the alternator?

Is this something I could test myself if I had the right tools that aren't ungodly expensive?

JP

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J

No winch yet, but when I turn on the lights the ammeter dips and stays dipped until I turn them off again. It doesn't kill the car entirely

- I can still continue to drive.

I'm thinking a HO alternator and a deep cycle battery.

JP

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M

You are talking a slipping belt, rev it too quick or load the alternator and it slips....

Mike

Jay Pique wrote:

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