General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Alternator pulley?

Thread Tools
 
Search this Thread
 
Old Apr 1, 2009 | 03:23 PM
  #1  
MasterV8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: Jul 2005
Posts: 604
Likes: 4
From: UK
Question Alternator pulley?

I have recently developed a squeek above 2000rpm, sounds like a nest of wasps in the engine bay.
Anyway! first time it happened I sprayed sea foam around the pulleys, left it over night & it went away.

Fast forward about a month, took it out last night & it did it again.
Removed belts & spun all the pulleys & there is a mouse like squeek from the alternator pulley, put some grease around it, sprayed the belts with vinyl cleaner & wiped them off.
Started car, revved it up to about 3000rpm! and it seems to have gone(for now!)
Are there bearings in the pulley that can be greased? I looked at it & there is a big arsed nut on it that spins with the pulley, but from what I've read on here that pulley seems to be attatched to the shaft of the alternator.
Reply
Old Apr 1, 2009 | 03:26 PM
  #2  
NonGoggleGuy's Avatar
TECH Enthusiast
15 Year Member
Photogenic
 
Joined: Mar 2008
Posts: 517
Likes: 1
Default

You can grease them all you want, but you probably need new alternator pulley bearings.

If it doesn't go away, I'd change the alternator.
Reply
Old Apr 1, 2009 | 03:35 PM
  #3  
MasterV8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: Jul 2005
Posts: 604
Likes: 4
From: UK
Default

Meaning those new alternator pulley bearings, only come with a new alternator! right?
Reply
Old Apr 1, 2009 | 04:03 PM
  #4  
NonGoggleGuy's Avatar
TECH Enthusiast
15 Year Member
Photogenic
 
Joined: Mar 2008
Posts: 517
Likes: 1
Default

Pretty sure, yeah.
Reply
Old Apr 1, 2009 | 05:01 PM
  #5  
samson_420's Avatar
TECH Addict
iTrader: (1)
 
Joined: Nov 2007
Posts: 2,372
Likes: 0
From: Narnia
Default

The alternator has sealed bearings which are not servicable. . .

If they squeek or spin rough enough they can lock up.

If it's bad, replace the alternator.
Reply
Old Apr 1, 2009 | 06:28 PM
  #6  
MasterV8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: Jul 2005
Posts: 604
Likes: 4
From: UK
Default

Well it came back after about an hours worth of driving.
I'll take it out with the a/c pulley off though, just to rule that out!
The tensioner pulleys spin freely without any noise, and the belts I got from Thunder racing when I swapped my pulley, so they're relatively new.
If it's the alternator then I'll just swap it out, I don't like the thought of it locking up.
Thanks
Reply
Old Apr 1, 2009 | 06:41 PM
  #7  
samson_420's Avatar
TECH Addict
iTrader: (1)
 
Joined: Nov 2007
Posts: 2,372
Likes: 0
From: Narnia
Default

It's not very likely to lock up. . . . It will sound like total crap before that happens(usually).

I run a lot of stuff like that into the ground.

How free does the alternator spin? Does it feel smooth or does it feel like there are spots where it is harder for it to roll?
Reply
Old Apr 1, 2009 | 06:50 PM
  #8  
NonGoggleGuy's Avatar
TECH Enthusiast
15 Year Member
Photogenic
 
Joined: Mar 2008
Posts: 517
Likes: 1
Default

If you just replaced the balancer pulley, I'd recheck that for straightness.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 1, 2009 | 07:07 PM
  #9  
MasterV8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: Jul 2005
Posts: 604
Likes: 4
From: UK
Default

Did the pulley Last summer & it's been good up till winter when it stopped being driven, I've taken it out a good few times before it started whining.
Used the tool I bought from 618Hawk on here for the pulley install & it slipped on without a hitch & hasn't caused any problems.
Reply
Old Apr 1, 2009 | 07:31 PM
  #10  
NonGoggleGuy's Avatar
TECH Enthusiast
15 Year Member
Photogenic
 
Joined: Mar 2008
Posts: 517
Likes: 1
Default

Originally Posted by MasterV8
Did the pulley Last summer & it's been good up till winter when it stopped being driven, I've taken it out a good few times before it started whining.
Used the tool I bought from 618Hawk on here for the pulley install & it slipped on without a hitch & hasn't caused any problems.
I used that same tool from hawk. Makes it very easy.
Reply
Old Apr 5, 2009 | 05:30 PM
  #11  
MasterV8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: Jul 2005
Posts: 604
Likes: 4
From: UK
Default

Originally Posted by samson_420
It's not very likely to lock up. . . . It will sound like total crap before that happens(usually).

I run a lot of stuff like that into the ground.

How free does the alternator spin? Does it feel smooth or does it feel like there are spots where it is harder for it to roll?
Alternator feels free! just makes a squeek every turn or so.

I've ran it without the A/C pulley came back, flushed & replaced power steering fluid, came back.

So I've pretty much come to the conclusion it's the alternator, but I'm surprised it would act up so soon, my milage as of today is just shy of 22000.

There's no noise below 2000rpm & above 4000 it's barely audible unless it's just drowned out! & it's always starts after about 17km or when the cars warmed up.
Reply




All times are GMT -5. The time now is 07:56 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE