Well this winter keeps getting better and better Driving home last night I hear the ding-ding alarm, look at the dash which says check gauges. I watched the volt meter drop to nothing. My question to you all is where are you buying replacements? My old one is a Bosch, A-zone has it at $259, anyone have suggestions. Thank's

 

on the denso alternator its typically brushes that wear out, and its a 10$ fix, remove the rear cover and remove brush holder...

I think many shops sell a repair kit (brushes/bearings/v-reg) but depending on whats actually wrong with your alternator the repair parts might not fix it.

other option is to take it to a rebuild shop, around here its typically 80-90$ for them to rebuild your alt

 

check fixinrams. He used to have some good info.

 

Update....I take the brush holder off to check brushes, they seem ok. put it back together and take the alternator to A-zone. It tests fine. I come home and put it back together and it's charging normal. Could the brushes been stuck? any input from you guys would be great!

 

Sounds like stuck brushes but that usually only happens when they are worn down. I would save for a new one or have that one looked at by a generator shop.

Rick

 

I would have a look at the PDC under the hood, for a loose connection.

Mine did this from new, every couple months, til I found the problem. Took about 4 years to locate it. I didn't ever suspect the alternator, as it was a brand new truck. ( although that doesn't mean much these days )

Just something to think about.