need some idea's
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
need some idea's
ok, this morning before work i went for a quick drive to visit a buddy that wanted to check out my new SLP powerflo catback exhaust system. as a side note i love this system! (will get into this in another post) anyway we were out cruising (on a road that is out of the city and has little to no traffic) and i did a couple run through the gears to get a feel for the sound of the powerflo system, and out of the blue i get a belt/pulley squeak! i had thought that was taken care of! i have replaced both belts with dayco belts from napa, the ac idler and tension pulleys both new (when diagnosing the problem, i took the belts off one at a time and it was the ac system squeaking) and when i replaced these parts the squeak was initially gone. so after a few shifts up to maybe 5000 rpm's to about 3rd gear the squeak came back! 
on the way home i noticed that the squeak only happened at about 1800 rpm's and above, and as the journey home continued the squeak slowly raised in the rpm range till by the time i got home 10-15 min, it had gone up to around 2500 rpm. what the heck could this be? i feel that if i drove a little longer the squeak may have gone away. (unless i did some more pulls to higher rpm) any idea's are very much appreciated!
on the way home i noticed that the squeak only happened at about 1800 rpm's and above, and as the journey home continued the squeak slowly raised in the rpm range till by the time i got home 10-15 min, it had gone up to around 2500 rpm. what the heck could this be? i feel that if i drove a little longer the squeak may have gone away. (unless i did some more pulls to higher rpm) any idea's are very much appreciated!
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Doing some thinking, I think maybe I have two separate problems. A high rpm/load squeal and a low rpm ac system squeak, which I think is fixed, and the other which I don't notice cause I don't drive around at 5000 rpm's all the time. What could cause a high rpm squeal/ squeak?
Last edited by red03vette; Jun 10, 2013 at 08:52 PM.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Le Mans Master
Joined: Jan 2007
Posts: 7,364
Likes: 6
From: Rocky Mount Virginia
Most likely your belts are slipping at the higher RPM's. I know you just bought the Dayco's but the Vette likes the Gatorbacks. To me they have a softer compound which makes them grab the pulleys a little better. There are a couple of vendors that sell them here or you can go to that auction site.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Sorry for my short response but I was on my Android.
Most likely your belts are slipping at the higher RPM's. I know you just bought the Dayco's but the Vette likes the Gatorbacks. To me they have a softer compound which makes them grab the pulleys a little better. There are a couple of vendors that sell them here or you can go to that auction site.
Most likely your belts are slipping at the higher RPM's. I know you just bought the Dayco's but the Vette likes the Gatorbacks. To me they have a softer compound which makes them grab the pulleys a little better. There are a couple of vendors that sell them here or you can go to that auction site.
Le Mans Master
Joined: Jan 2007
Posts: 7,364
Likes: 6
From: Rocky Mount Virginia
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
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Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
well about and hour ago i took the Vette out of the shop to take the wife for a little drive and run a couple errands. as soon as i started the car the squeak was back at idle (never did this before) and it's way worse than it has ever been, plus now there is a ticking sound to boot!! 
kinda getting real frustrated with this car right now! its making me 
i spend more time working on this car than driving it. i guess i just need to vent!
kinda getting real frustrated with this car right now! its making me i spend more time working on this car than driving it. i guess i just need to vent!
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
I really love the lines on this car, and I've wanted a Vette ever since i was a kid (long time). Gonna cool down and go out to the shop tomorrow and try figure this out. I do not want to give up yet, I feel that once I fix this I will be good for the summer. I sure hope so anyway... 
Le Mans Master
Joined: Oct 2007
Posts: 6,868
Likes: 770
From: Kelso Washington
St. Jude Donor '09, '13, '15
I'm having similar issues and noted the harmonic balancer just doesn't seem as true as all the other pulleys.
Before seeing that I noted the upper tensioner was wobbly. Replaced that and the upper belt and the chirping is now different.
I'm thinking I have the dreaded "wobbly" balancer and am getting an appointment with our local 'Vette guru.
Might this be your problem too?
Before seeing that I noted the upper tensioner was wobbly. Replaced that and the upper belt and the chirping is now different.
I'm thinking I have the dreaded "wobbly" balancer and am getting an appointment with our local 'Vette guru.
Might this be your problem too?
Burning Brakes
Joined: Nov 2011
Posts: 1,030
Likes: 54
From: Chandler, AZ
St. Jude Donor '12
With the car running, look at the harmonic balancer with a flashlight and see if it is wobbling. That is a known problem and could be the cuprit, you may have to change it out.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Definitely considered the wobbly pulley syndrome, unless the wobble is real small I can't see it! Does not mean that it's not failing though. I wish we had a Vette guru up here where I live! Anyone know of a Vette guru on Vancouver island? How about Vancouver B.C.? I know there are some great shops south of the border, but I can't go there just yet, have to get a new passport for that. I have heard that Tom Wong in Vancouver Washington is real good? Maybe one day I can take it there, but in the short term if I can't figure this out gonna need some help from the pros that are a reasonable distance from me.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Le Mans Master
Joined: Oct 2007
Posts: 6,868
Likes: 770
From: Kelso Washington
St. Jude Donor '09, '13, '15
Yep, I'm on Tom's waiting list.
On mine, it's barely discernible but not smooth looking, especially compared to other pulleys. Just barely a wobble.
I tried the garden hose to the ear trick to see where it was and could NOT get a good read on it. ....weird. Usually that can pinpoint any noise.
On mine, it's barely discernible but not smooth looking, especially compared to other pulleys. Just barely a wobble.
I tried the garden hose to the ear trick to see where it was and could NOT get a good read on it. ....weird. Usually that can pinpoint any noise.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Yep, I'm on Tom's waiting list.
On mine, it's barely discernible but not smooth looking, especially compared to other pulleys. Just barely a wobble.
I tried the garden hose to the ear trick to see where it was and could NOT get a good read on it. ....weird. Usually that can pinpoint any noise.
On mine, it's barely discernible but not smooth looking, especially compared to other pulleys. Just barely a wobble.
I tried the garden hose to the ear trick to see where it was and could NOT get a good read on it. ....weird. Usually that can pinpoint any noise.
Racer
Joined: Aug 2012
Posts: 279
Likes: 2
From: Las Vegas Nevada
Could have glazed pulleys that also glazed the new belts. I put in multiple pulleys for everything on the my 98, including a few new belts. Always a sqweaking noise during running. Got much faster with driving. I eventually took a soapy sponge and whiped my belts as the engine was running. It minimized the noise, but then when I put on a new Continental belt... GONE!
Another suggestion is trying to rub the pulleys and belts down with a light scotchbrite pad. It will give them some texture to grab instead of slip.
Another suggestion is trying to rub the pulleys and belts down with a light scotchbrite pad. It will give them some texture to grab instead of slip.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Could have glazed pulleys that also glazed the new belts. I put in multiple pulleys for everything on the my 98, including a few new belts. Always a sqweaking noise during running. Got much faster with driving. I eventually took a soapy sponge and whiped my belts as the engine was running. It minimized the noise, but then when I put on a new Continental belt... GONE!
Another suggestion is trying to rub the pulleys and belts down with a light scotchbrite pad. It will give them some texture to grab instead of slip.
Another suggestion is trying to rub the pulleys and belts down with a light scotchbrite pad. It will give them some texture to grab instead of slip.
Team Owner
Joined: Oct 2006
Posts: 20,393
Likes: 431
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17
NCM Member '09
I'm in the middle of changing my balancer for the same reason....and ya, I sell Dayco, but won't run them on any of my cars....get Gates or Goodyear.
Thread Starter
Burning Brakes
Joined: Aug 2011
Posts: 1,160
Likes: 113
From: Vancouver Island
Are you installing another oem balancer or going aftermarket? And I am starting to believe that the dayco's are at least part of my problem. Gonna order some gatorbacks, can't hurt.