Alternator charging but making lots of noise

[Tahoe97]

Good suggestion. The idler was screaming about 2 months ago so I replaced it. But the alternator was already making some noise, less than the idler, but now it is the loud mouth. I did pull the belt and hand spun the alternator today and it was not happy, considerable bearing noise. 180,000 miles and almost 20 years and I can't blame it for wanting to retire.

FYI I picked up my Tahoe new in Hempstead, TX in Oct 96. Moved to NC in 97. Been here ever since.

 

[fastpat]

Yep, it's time for a new one or a good rebuild. New ones of higher output are, in my opinion, the way to go. Make sure your output cables are in good condition.

 

[liquify33]

Good suggestion. The idler was screaming about 2 months ago so I replaced it. But the alternator was already making some noise, less than the idler, but now it is the loud mouth. I did pull the belt and hand spun the alternator today and it was not happy, considerable bearing noise. 180,000 miles and almost 20 years and I can't blame it for wanting to retire.

FYI I picked up my Tahoe new in Hempstead, TX in Oct 96. Moved to NC in 97. Been here ever since.

Neat! I work in Hempstead occasionally.
FYI the 140amp has a 4pin connector. Not sure what the 105 has.

 

[Tahoe97]

Just installed the ACDelco alternator part # 335-1068 GM#88877278 (105A). Once I had the old one out it thanked me. The bearings were shot and it made lots of noise with a simple rotation of the pulley. The new one is silent. THANKS EVERYONE WHO ENCOURAGED ME TO TACKLE THIS MYSELF AND GUIDE ME TO THE CORRECT REPLACEMENT. DELIVERED BY AMAZON PRIME IN 48 HOURS FOR JUST UNDER $100.

 

[OR VietVet]

"On the road again, just can't wait to get on the road again".

Like the looks of that charging gauge.

 

[wjburken]

"On the road again, just can't wait to get on the road again".

Like the looks of that charging gauge.

Love Willie.

Here is why Willie couldn't wait to get on the road again.

 

[OR VietVet]

Fantastic!