Alternator: Something I can install myself? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 05-25-2005
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Alternator: Something I can install myself? UPDATE

Well I couldn't find a "General Electrical" forum, so hopefully I put this in the right place.

Anyways, the alternator on my truck is toast, and I need a new one. I'm not terribly mechanically-inclined, but I know a few things. What I'm curious about though, is how difficult would it be to replace the alternator in my truck? Can anyone give me a quick run-through of how I'd go about doing it? And perhaps how long it might take to do so? Thanks a ton!

-Kyle

UPDATE 5/26 2:06 PM

Just got back from the shop. They did an electrical system test and this is what they say:

Battery Voltage: 12.4
voltage drop across terminals (volts): 0
Starter amp draw: 129 amps
Voltage supply to back of alternator (volts): 12
Charging voltage: 12.2 volts.

They recommend changing the alternator and rechecking for possible problems they can't tell at this time.

When I went out to my truck to get it from the shop, I checked the fuses. No broken fuses. I guess they charged the battery because the truck turned over perfectly the first time and the battery meter in the truck didn't go down at all over the 10 miles or so it was from the shop to my house.

I guess what I'm wondering is... what should I do? I don't want to have to buy an alternator unless I'm sure that's the problem. I'm going to take the battery to Ford (it's a motorcraft within it's free replacement time) and see if getting a new battery won't help, because I got a new battery about 15 months ago when the same sort of problem was occuring. I'd just bought the truck though so it was still under the carmax warranty. Any words of wisdom about what those test results mean or what I should do from here? Thanks so much!

Last edited by Gearhead61; 05-26-2005 at 02:15 PM.
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Old 05-25-2005
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its very simple on our trucks... remove belt, unplug wires to alternator, unbolt and remove alternator... installation is the reverse of removal
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Old 05-25-2005
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it is pretty simple. if you feel uncomfortable wtih it, go to autozone and get a haynes manual, it iwll walk you through each step. if you can turn a wrench and have some ambition you can do it easily
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Old 05-25-2005
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Great! Thanks for the help guys. Any idea how much a new alternator will cost?
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Old 05-25-2005
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And if you need help, I can help, it isnt hard.
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Old 05-26-2005
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Thanks Leo, I appreciate that. Just gotta find me the part. A Haynes manual would probably be a good thing to get, seeing as I'm gonna be a poor college kid soon and won't be able to pay other people to fix the stuff on my truck I'm gonna break.
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Old 05-26-2005
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i believe it cost my broter around 100$ for a 94 grand marquis.

Probably around there.
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Old 05-26-2005
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Oh, I forgot to add that they wanted about $180 for a rebuilt alternator, an idea I'm not too fond of. I do realize that the vast majority of the alternators sold by shops will be rebuilt though =(

And I guess editing a post does not make it active again here either, haha.
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Old 05-27-2005
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My GF just paid $285 for one on her Civic. With a discount for being a girl (something every guy is jelaous of - no discounts for being hot).

I am not sure what they cost, but they arent cheap.

Last edited by PotterFX4; 05-27-2005 at 07:43 AM.
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Old 05-27-2005
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$129.99 for a rebuilt alternator from AutoZone with a lifetime warranty for my 94 4.0.

I don't know how much they have changed, but you shouldn't have to pay more than that. They sell them for $89.99 with a 1 year warranty. I get the lifetime, that way I don't have to pay for another alternator.
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Old 05-27-2005
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you ever check on power master Kyle?
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Old 05-27-2005
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180 bucks!

Go pull one from a bone yard!
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Old 05-27-2005
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Nah, get the lifetime one at autozone, or you can probably pick up a higher output aftermarket one online for that price, sans warranty.
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Old 05-27-2005
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Ok, I went to autozone and talked to the guy there, and I made this thread for it. Anyone who knows anything please help me out!

https://www.ranger-forums.com/forum2...ead.php?t=7108
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Old 05-27-2005
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you should have gotten a stock tremor alt if anything..
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Old 05-28-2005
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The didnt have the tremor alternator in their parts catalog. Didn't want to go to the dealer to get one because I would have paid out the *** for it.
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