Idler Pulley question
Thread Starter
Instructor
Joined: Jun 2011
Posts: 124
Likes: 0
Idler Pulley question
I am in the process of fixing the most annoying problem in the history of our beloved C5s and that is the chirp of insanity!!! I have located and found the part numbers for both tensioner pulley assembly's at rock auto parts (89339 for the ac line, 89337 for the main line) Now my problem is its not real clear on which IDLER PULLEY goes where, i know they are both smooth because i can see them, but i can not for the life of me find one that says ac and one that says main.. My question is has anyone replaced their IDLER PULLEYS and if so where did you buy and WHAT IS THE PART NUMBER??!?!? Any help like always is greatly appreciated, thanks in advance guys
Melting Slicks
Joined: May 2008
Posts: 2,606
Likes: 355
From: Rochester New York
Finding a belt/pulley noise can be a PITA. Also check for a wobbling harmonic balancer. Best way to isolate belt noise is to remove the main belt and start the engine. If the noise is still there then it is in the A/C system. Remove both belts and spin pulley and see what makes noise. Use a stethoscope and listen to each component. Replace the belts with a Gatorback.
Advanced
Joined: Aug 2011
Posts: 68
Likes: 0
From: Glasgow Kentucky
I just finished replacing my main belt drive idler pulley with a duralast #231059 for $18. the other idler pulley cost $17. I don't know the differece. I got them at Auto zone. I had to place a copper washer between the dust sheild and the pulley so that it would turn freely after I tightened it down. I used a 7/16" from lowes, it came in a four pack for a buck.
Thread Starter
Instructor
Joined: Jun 2011
Posts: 124
Likes: 0
Well I replaced the top tensioner pulley, idler pulley, ac idler pulley and putting my bolt back in for the ac tensioner pulley the damn bolt broke of leaving about an 1/8th inch sticking out from my block... Yay! Just mother freaking great, good thing is it's winter and I don't really need my ac but I still have to get it removed!!! But hell at least that god awful squeak is gone
Melting Slicks
Joined: Jul 2006
Posts: 2,332
Likes: 31
From: Silver Spring MD
Almost the same thing happened to me
I just finished replacing my main belt drive idler pulley with a duralast #231059 for $18. the other idler pulley cost $17. I don't know the differece. I got them at Auto zone. I had to place a copper washer between the dust sheild and the pulley so that it would turn freely after I tightened it down. I used a 7/16" from lowes, it came in a four pack for a buck.
BIGHANK
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Without the ability to run and look real quick for you, I think the serpentine pulley has a guide edge on it for the belt to sit inside of. The AC pulley is smooth with no guide.
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
I bought my idler pulley for the main serpentine belt from Rock Auto
below is the belt and pulley part number
Part Number Part Type Price EA Core EA Quantity Total
2001 CHEVROLET CORVETTE 5.7L V8
GOODYEAR 4060798 Belt $ 18.31 $ 0.00 1 $ 18.31
GOODYEAR 49283 Belt Tensioner $ 53.79 $ 0.00 1 $ 53.79
Shipping Ground (1 to 5 business days) $ 8.15
Order Total $ 80.25
below is the belt and pulley part number
Part Number Part Type Price EA Core EA Quantity Total
2001 CHEVROLET CORVETTE 5.7L V8
GOODYEAR 4060798 Belt $ 18.31 $ 0.00 1 $ 18.31
GOODYEAR 49283 Belt Tensioner $ 53.79 $ 0.00 1 $ 53.79
Shipping Ground (1 to 5 business days) $ 8.15
Order Total $ 80.25
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Melting Slicks
Joined: Mar 1999
Posts: 3,211
Likes: 167
From: Rochester Hills Michigan
What's up with these A/c idler pulleys...try to replace mine tonight and new Duralast contained no washers....can I just put the pulley over the arbor and then bolt it down no washers or find a few washers for both sides?
So I gave up tonight and just cut the A/C belt off
...looks like will be runnning tomorrow no a/c belt till have time to replace both belts.
So I gave up tonight and just cut the A/C belt off
...looks like will be runnning tomorrow no a/c belt till have time to replace both belts.
