CHEVY POSSIBLE PULLEY TROUBLE

1991 Chevrolet Silverado

Tiny

ron15

June, 23, 2008 AT 4:42 PM

Noises problem
1991 Chevy Silverado V8 Two Wheel Drive Automatic 125000 miles

Hi, I have a chevy silverado with a 5.7l v8. I recently changed altenator and serp belt. There is a whinning noise coming from that area, I changed both tension and idler pulleys and I still have the noises. Any help would be appreciated. Thanks

FOUND 81 RELATED QUESTIONS

Drive Belt Pulleys

1 ANSWER
1 IMAGE

Fan Belt Pully

2 ANSWERS

5 Answers

Tiny

Docfixit

June, 23, 2008 AT 5:11 PM

Give it a good listen is the sound coming from the alt? If is a new or rebuilt unit?

Tiny

ron15

June, 23, 2008 AT 5:30 PM

Hi, yes the altenator is rebuilt

Tiny

Docfixit

June, 24, 2008 AT 7:11 AM

You think noise is coming from alt?
Dose whine get louder say if headlights or AC is turned on?
If so it could be rectrifer bridge or bearing.
Let me know

Tiny

ron15

June, 24, 2008 AT 8:36 AM

Hi, I believe it is AC compressor. Thanks for your help

Tiny

Docfixit

June, 24, 2008 AT 8:46 AM

You welcome if AC has been converted to 134a maybe oil charge might quiet it down.

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