Squealing from the engine

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Jun 20, 2017 | 03:16 PM

#21

kc5

Thread Starter

Cruising

Joined: Jun 2017

Posts: 10

Likes: 0

From: Stockholm

Quote:

Originally Posted by unlvrebel

I can't speak for others, but my Vette runs between 200 and 230, especially in the summer. Mine is an 03 and I've owned it since 05, so this has been the norm. The higher temps generally correspond with summertime traffic... You can easily tell if there is a aux fan problem - start the car and let it idle for a while. The electronic fan will come on.

Ive read that as well... Mine has been around 190 until now. But as I said, accordingly to the previous owner the cooler is updated to a cooler with 2 cores or something and therefor the temperature might have been changed as well. He told be that its always just under 190.

I also read that if I turn the AC off, the fans dont come on until later, and I probably had the AC off the first time because the roof was off, and I might have had the second time also, so I will have to try if keeping the AC on will help.

Jun 20, 2017 | 03:19 PM

#22

'Shifter

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

Quote:

Originally Posted by Corvette#2

Check the harmonic balancer for wobble.

That's what mine was....(I changed belts, idlers and tensioners too)

Jun 21, 2017 | 11:20 AM

#23

66dts-v

Drifting

Joined: Jan 2012

Posts: 1,883

Likes: 76

From: Portland OR

I am afraid this is where I am as well. My buddy bought a kit to do his C6, so I just need to order the parts and do the work to remove the rack and pin the new balancer.

Jun 24, 2017 | 04:32 PM

#24

kc5

Thread Starter

Cruising

Joined: Jun 2017

Posts: 10

Likes: 0

From: Stockholm

I have left the car with a mechanic so we will see what he thinks. Before I took the car there I tried to see if I could narrow it down a bit. The noise was louder from the passenger side so I tried to spray some inside that pulley and the squealing was instantly a bit quieter, so hopefully it will be fixed after he changes that one.

Jul 4, 2017 | 05:38 PM

#25

kc5

Thread Starter

Cruising

Joined: Jun 2017

Posts: 10

Likes: 0

From: Stockholm

Just a final update. Changed the pulley I mensioned above and that solved the problem. The coolant level was a bit low and the temp has not been a problem since I topped that up either

Sep 12, 2021 | 07:48 PM

#26

Bad_AX

Burning Brakes

Joined: Oct 2011

Posts: 978

Likes: 99

From: Virginia

Didn't Corvette Racing go with a Fluidamper just a few years ago? I seem to recall this was written about in Race Engine Technology.

Sep 13, 2021 | 12:46 AM

#27

Yello95

Team Owner

Joined: May 2001

Posts: 25,057

Likes: 1,265

From: Virginia

St. Jude Donor '11

Quote:

Originally Posted by Lexybird

Harmonic balancer .. get your wallet out if it is

Mar 24, 2022 | 08:03 PM

#28

tabbruzz

Safety Car

Joined: Feb 1999

Posts: 4,043

Likes: 342

From: Central NJ

Just take the two belts off and spin the pulleys. If they Free spin or you hear the bearings moving around then I would repkace them....I had a bad squeal when cold just like yours...My ac pulleys were shot and in this case I did change the harmonic balancer as it did wobble pretty bad. This was 112,000 miles......my 14k mile c5 had a squeak when cold and it WAS the ac pulleys for sure......just did both cars a week ago