Engine whistle
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,100
Likes: 0
From: The Great State of Texas
CI 7-8 Veteran
Engine whistle
Got a high pitched whistle noise in the engine bay. Seems to be more on the left side. Not sure if it is an air sound or a metal sound. Rises and falls with the rpm. One of the pulleys maybe? Seems to go away or lessen after car has been driven a while. I checked the intake stuff - seems tight.
The only thing changed lately was new cat backs. Used the old exhaust gaskets.
Ideas?
The only thing changed lately was new cat backs. Used the old exhaust gaskets.
Ideas?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Re: Engine whistle (C5starman)
This is a documented C5 problem. It is due to the intake manifold turblance. If your car is in warrenty the dealer may be able to fix it!
BC
BC
Melting Slicks
Joined: Apr 2000
Posts: 2,767
Likes: 4
From: Austin TX
Re: Engine whistle (Bill Curlee)
This is a documented C5 problem. It is due to the intake manifold turblance. If your car is in warrenty the dealer may be able to fix it!
BC
BC
Dick
Drifting
Joined: Nov 2002
Posts: 1,354
Likes: 4
From: Edmond OK
Re: Engine whistle (mowrey96)
yea, i dont know if mine is the same noise, but it makes it between about 1300-1500 rpms. i'm also having different belt noises as well. i'm about to go crazy on both. the 1300-1500rpm noise is not nearly as bad however. sounds like some sort of exhaust leak
Drifting
Joined: Feb 2003
Posts: 1,557
Likes: 0
From: Columbia MD
Re: Engine whistle (Bill Curlee)
This is a documented C5 problem. It is due to the intake manifold turblance. If your car is in warrenty the dealer may be able to fix it!
BC
BC
Whistle Noise From Intake Manifold/Throttle Body (Replace Intake Manifold)
2001 Chevrolet Corvette
with 5.7L Engine (VINs G, S -- RPOs LS1, LS6)
Condition
Some owners may comment on a whistle noise coming from either the intake manifold or the throttle body. The noise is most noticeable between 1100 and 2000 RPM.
Cause
This condition may be the result of airflow through the intake manifold.
Correction
Replace the intake manifold with the part listed below.
Parts Information
Part Number
Description
Qty
88894339
Manifold, Intake
1
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Intermediate
Joined: Dec 2003
Posts: 30
Likes: 0
From: Corpus Christi Texas
Re: Engine whistle (C5starman)
Everything posted above was really helpfull but, the same noise started coming out of my car after I ported my T.B and installed it back on...
So could it be the result of the porting? Why should I change the manifold if the porting caused it? :confused: (other than annoying sound)
So could it be the result of the porting? Why should I change the manifold if the porting caused it? :confused: (other than annoying sound)
Drifting
Joined: Sep 2000
Posts: 1,574
Likes: 409
From: Fulshear TX
Re: Engine whistle (bowtiebandit)
I had this problem on my '01 Z06. The dealer replaced the manifold. I still had a slight whistle. After two more trips to Mr Goodwrench, he determined that my water pump was making the noise. He replaced the waterpump and the noise was reduced but not eliminated. Another year later, and I now have a loud whistle from my engine when cold. The car has only 12k on it. What next?
:banghead:
:banghead: