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Unread 02-14-2011, 09:35 AM   #1
jeepkid03
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Alternator... reman or new

I'm pretty sure my loud whistle is my alternator, since it changes pitch when electrical accessories are turned on. I just helped my buddy put a reman'd alt from autozone in his Ford Ranger and it seemed pretty decent. Anyone have input on a good alternator to go with? I'm not looking for a 400 dollar mean green alternator, just a stock one.

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Unread 02-14-2011, 09:41 AM   #2
severous01
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i used duralast. and because i was always in the mud it had a lifetime warranty. i abused the mess outta that warranty

i'd suggest going with it. specially if you off-road any at all. one submersion or a ton of mud under the hood will wipe it out...believe me i did it a lot. of course i had water over my headlights several times. and the mud i was in was like brown water...so it got everywhere.
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Unread 02-14-2011, 09:44 AM   #3
Hussler
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If your in mud pits a lot go with a remaned one with a lifetime warentty.

Its drilled pretty hard on JF to not buy remand but if you abuse it with mud its going to die anyway
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Unread 02-14-2011, 10:03 AM   #4
Mike1084
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I use these guys for my alternators. http://alterstart.net/
Sometimes a whine or low whistle is normal depending on the demand the alternator has on it.
However if your belt is not tight the heat that builds up from the belt slipping goes directly to the bearings which will evaporate the grease, the noise you hear is eventual bearing/alternator failure.
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Unread 02-14-2011, 11:19 AM   #5
jeepkid03
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Quote:
Originally Posted by Mike1084 View Post
I use these guys for my alternators. http://alterstart.net/
Sometimes a whine or low whistle is normal depending on the demand the alternator has on it.
However if your belt is not tight the heat that builds up from the belt slipping goes directly to the bearings which will evaporate the grease, the noise you hear is eventual bearing/alternator failure.
I put a new belt on and noticed the other one was pretty loose. It slipped sometimes when first started during wet. Never squealed but my A/C compressor also never worked and the only way I knew it was slipping was the alternator didn't charge for a couple seconds. I don't do mud very much, but I'm thinking the lifetime warranty is a good idea. The cheaper new alternators only have a 2 year warranty. I'm thinking the bearings are done on mine since the whistle can be heard inside my house when the jeep is first started outside.
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Unread 02-14-2011, 11:47 AM   #6
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I agree--remanufactured w/lifetime warranty.

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Unread 02-14-2011, 12:59 PM   #7
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Yuo your just gunna ruin it anyway, or just to be cool get a mean green alt
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Unread 02-14-2011, 01:52 PM   #8
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Ok I'll probably go with the Duralast w/ lifetime warranty.
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Unread 02-14-2011, 04:40 PM   #9
tjwalker
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I'm not big on reman. parts in general, but I do consider them for alternators, because of the big price difference.

But here is another option to consider. Have it rebuilt locally. There are a lot of shops (some very small) that deal with these repairs.

We have a small one man shop in my town that rebuilds starters and alternators for a song. A GREAT option.

Snoop around to see if you can find a shop that offers this, and get a quote.
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Unread 02-14-2011, 05:04 PM   #10
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Quote:
Originally Posted by tjwalker View Post
I'm not big on reman. parts in general, but I do consider them for alternators, because of the big price difference.

But here is another option to consider. Have it rebuilt locally. There are a lot of shops (some very small) that deal with these repairs.

We have a small one man shop in my town that rebuilds starters and alternators for a song. A GREAT option.

Snoop around to see if you can find a shop that offers this, and get a quote.
Thanks for the info. I remember there being a few of those shops in my area, but it seems many of them have closed down. I'll see what I can find. Also, any opinion on what could cause my whistle? Its definitely a belt driven accessory, and seems to be coming from the front of the engine. The pitch changes when I turn on lights which makes me think alternator. I'm not one to usually throw parts at something, but I've narrowed it down to the alt or the P/S pump and the noise seems closer to the alternator.
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Unread 02-14-2011, 05:07 PM   #11
tjwalker
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Use a "mechanics stethoscope" on these components to determine which one is bad.

Like a doctors stethoscope, but has an attenuator to filter out other noise.

A great addition to the toolbox for under $10.
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