C4 Squeaks like heck
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 25
Likes: 2
C4 Squeaks like heck
I have a 1986 C4 auto coupe 15000 miles never seen snow or rain 15000 miles.
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
Race Director
Joined: May 2006
Posts: 11,865
Likes: 67
From: 1000 Vin Scully Ave, L.A California
I have a 1986 C4 auto coupe 15000 miles never seen snow or rain 15000 miles.
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 25
Likes: 2
My 94 squeaked like hell. Removed the dash pad and tried searching for the squeaks and rattles had some loose bolts under the dash pad .then the rattles stopped .still had a squeak. Removed lower passenger side knee cover and the foam inside was the culprit . Took a weekend to fix but worth it .car was pretty quiet after that.
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Yes, these cars do makes noises.
Unfortunately you will have to tackle these noises one at a time. Tapping, pushing jostling until you can locate the noise. Foam rubber will be your friend along with tape and zip ties,
On my 89 dash, I quieted the car LOTS by taking the dash pad off and putting some black, double sided foam take on all the connection "touch" points where the dash could touch. Essentially my dash sat on a layer of foam. While the dash was off, I wiggled anything I could get my hands on using foam, zip ties...etc on anything that could make noise.
It is a bit tedious, but you will get it.
Unfortunately you will have to tackle these noises one at a time. Tapping, pushing jostling until you can locate the noise. Foam rubber will be your friend along with tape and zip ties,
On my 89 dash, I quieted the car LOTS by taking the dash pad off and putting some black, double sided foam take on all the connection "touch" points where the dash could touch. Essentially my dash sat on a layer of foam. While the dash was off, I wiggled anything I could get my hands on using foam, zip ties...etc on anything that could make noise.
It is a bit tedious, but you will get it.
Race Director
Joined: May 2006
Posts: 11,865
Likes: 67
From: 1000 Vin Scully Ave, L.A California
Yes, these cars do makes noises.
Unfortunately you will have to tackle these noises one at a time. Tapping, pushing jostling until you can locate the noise. Foam rubber will be your friend along with tape and zip ties,
On my 89 dash, I quieted the car LOTS by taking the dash pad off and putting some black, double sided foam take on all the connection "touch" points where the dash could touch. Essentially my dash sat on a layer of foam. While the dash was off, I wiggled anything I could get my hands on using foam, zip ties...etc on anything that could make noise.
It is a bit tedious, but you will get it.
Unfortunately you will have to tackle these noises one at a time. Tapping, pushing jostling until you can locate the noise. Foam rubber will be your friend along with tape and zip ties,
On my 89 dash, I quieted the car LOTS by taking the dash pad off and putting some black, double sided foam take on all the connection "touch" points where the dash could touch. Essentially my dash sat on a layer of foam. While the dash was off, I wiggled anything I could get my hands on using foam, zip ties...etc on anything that could make noise.
It is a bit tedious, but you will get it.
Le Mans Master
Joined: Dec 2005
Posts: 8,574
Likes: 961
From: Communist Colorado
Also, how are the shocks? Inoperable ones will give a terrible ride and make everything squeak and make noises.. In addition take the time to tighten every interior trim screw you can find. That will also help.
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
Riding with the top off too allows considerably more flexing of the frame, and consequently more squeaking.
I believe I read somewhere that as part of the manufacturing process evolution, foam was added at contact points to address the squeaks so prevalent in the early C4s. In any case, my 90 Z is pretty quiet - no squeaks. However, I seldom ride with the top OFF. That said, I've noticed extensive use of foam tape on all the various panels I've removed (so far).
I believe I read somewhere that as part of the manufacturing process evolution, foam was added at contact points to address the squeaks so prevalent in the early C4s. In any case, my 90 Z is pretty quiet - no squeaks. However, I seldom ride with the top OFF. That said, I've noticed extensive use of foam tape on all the various panels I've removed (so far).
Racer
Joined: Apr 2018
Posts: 349
Likes: 55
I have a 1986 C4 auto coupe 15000 miles never seen snow or rain 15000 miles.
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
3,000 since 1992 - 100% original pretty well showroom.
Just replaced rubber - flat spots.
The body sqeeks like heck all the time - would drive you crazy - quiets down on highway quite a bit.
Is this normal? Is there anything you can do to quiet it down?
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Race Director
Joined: May 2006
Posts: 11,865
Likes: 67
From: 1000 Vin Scully Ave, L.A California