Engine/Transmission (1998.5 - 2002) Alternator HELP! What is stock amps??

[Nate]

The alternator crapped out on my truck.



For some reason I could have swore the truck had a 160amp alternator stock.



Napa only lists a 120amp alternator for the truck.



They do list a 136 amp for a 2002 truck though... not sure if they are different or something?



What is the stock alternator's amperage?? And what should I run? I see on eBay 220 amp ones for $300.

 

[n7gxz]

On my '01 it is the 136A one. Check the brushes, it might be that they are worn out and just need to be replaced. Also you can take it into a local rebuilder and they can fix it up.



Kevin

 

[Nate]

That's option #1, though he said probably $150-175 depending on what's the problem with it.



I found this too:



http://cgi.ebay.com/ebaymotors/94-9...ItemQQcategoryZ33573QQihZ019QQitemZ8041574399

 

[Thomas]

This (from the model year 2001 Factory Service Manual) should explain the different ratings you're seeing:

#ad


Take a look at LarryB's page too: http://fostertruck.com/alternators.htm


And this is what is in the model year 2000 parts catalog: 56027221AB ALTERNATOR, 136 Amp (Denso)

 

[Nate]

Thanks.



Hopefully I will be able to get the truck home tonight since I had to leave it in the parking lot at work last night and hitch a ride. Made it to work in the AM and that's all she had.



My buddy has a Cummins as well so he said we'll just swap batteries if need be to get it home.



I'm going to see if I can fix it myself before I send off to the shop. Doesn't seem that complicated.

 

[WTBurke]

Nate,

This place has wicked alternators.



www.mean-green.com/products/alternator.html



William

 

[Nate]

Well I got a reman'd unit from Carquest.



It's charging now, though it's reading 14. 4v output (tested with multimeter).



Does that sound ok? I'm used to seeing 13. 8v.



I had the batteries on a charger for the past few days and they are 100%.