Weird noise when driving
Thread Starter
Intermediate
Joined: Jul 2024
Posts: 47
Likes: 11
It does increase and decrease with speed, yes.
My mechanic said he has checked all of those parts and I recently had new calipers, brake pads put on along with re-machining the rotors and having them turned.
It does have multiple exhaust leaks due to the age of the exhaust system, not sure if that would possibly make the noise or not. 3 holes in total under the car, and one crack in the headers by the engine.
rear-end may be making the noise, not sure. gonna have everything in the rear end replaced at some point anyway.
did you hear the noise?
Melting Slicks
Joined: Apr 2021
Posts: 2,679
Likes: 2,128
From: Minnesota
I can hear it I think. The little ticking/squeak noise.
You say you had the rotors turned. Did you check the runout? The rotors were riveted on and turned with the axles from the factory. Taking them off and machining them can introduce runout, which can cause the brake pads to “chatter” back and forth as the rotor turns.
Here is a good thread that discusses it further.
You say you had the rotors turned. Did you check the runout? The rotors were riveted on and turned with the axles from the factory. Taking them off and machining them can introduce runout, which can cause the brake pads to “chatter” back and forth as the rotor turns.
Here is a good thread that discusses it further.
Last edited by Piersonpie; Feb 22, 2025 at 06:16 PM.
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Thread Starter
Intermediate
Joined: Jul 2024
Posts: 47
Likes: 11
I will.
If that isn't the issue, maybe the differential as you suggested earlier?
The rear-end already makes a howling noise at higher speeds and gets louder as the car speeds up.
Maybe this is another issue.
If that isn't the issue, maybe the differential as you suggested earlier?
The rear-end already makes a howling noise at higher speeds and gets louder as the car speeds up.
Maybe this is another issue.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,067
Likes: 4,200
From: US-PNW
Did the noise suddenly appear out of nowhere or has it been getting louder?
What visually came to mind as I listened was of a strap swinging around and hitting something. Road debris maybe caught someplace and could be just about anywhere from the 4 wheels to the center driveshaft.
Have you checked all tires to ensure nothing is caught in the tread?
Melting Slicks
Joined: Mar 2010
Posts: 2,268
Likes: 374
From: Randolph nj
Sounds like a rock stuck in your brakes or a back plate rubbing or somebody’s playing with you and put zip ties on you drive shaft … have someone walk along side the car and see if you can hear the noise
Drifting
Joined: Aug 2016
Posts: 1,784
Likes: 931
From: Arizona
Last edited by Golfobsessed; Feb 23, 2025 at 08:28 AM.
Melting Slicks
Joined: Mar 2010
Posts: 2,268
Likes: 374
From: Randolph nj
I’m gunna go with the trim rings or the center caps have debris making noise .. my buddy chased a sound for months it was one of the clips that broke on the ring ..he went to 3 different shops .. I took them off and the noise stopped 😂
Burning Brakes
Joined: Aug 2011
Posts: 830
Likes: 288
You could always block the front wheels, jack up the back, rest on jack stands and put the car in drive. This will allow you to see if the noise is coming from the rear or not. Might also help narrow down where the noise is coming from. You could also have someone rev the engine as you are looking for the noise.
Melting Slicks
Joined: Mar 2010
Posts: 2,268
Likes: 374
From: Randolph nj
You could always block the front wheels, jack up the back, rest on jack stands and put the car in drive. This will allow you to see if the noise is coming from the rear or not. Might also help narrow down where the noise is coming from. You could also have someone rev the engine as you are looking for the noise.
Tech Contributor
Joined: Aug 1999
Posts: 15,159
Likes: 3,965
From: Connecticut, USA
A local classic car restorer called me looking for a posi case. He broke it. I asked him if he was out beating up a customer's car and broke it, nope. He put the car in the air, suspension hanging, and had a kid in the car to give it gas. The 1/2 shaft bound up, broke the posi case. Not only did he wreck his customers diff, he told the customer the noise was from a bad diff and he saved him time and money.
And some people ask me why I sometimes have a negative view of some places.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
Can't decide if you are asking about the continual, low-level thumping noise or the scraping sound toward the end of the clip???
Thumping noise: still could be the NEW tires as shops don't check tires for out-of-round conditions...they should notice a bad tire, but these days, shop kids don't bother. Could also be posi needing additive to lube.
Scraping noise: radiator fan too close to shroud??? Go over a bump or a little rise and the edges of the fan rub the shroud?? Might indicate weak/failing motor mounts.
Thumping noise: still could be the NEW tires as shops don't check tires for out-of-round conditions...they should notice a bad tire, but these days, shop kids don't bother. Could also be posi needing additive to lube.
Scraping noise: radiator fan too close to shroud??? Go over a bump or a little rise and the edges of the fan rub the shroud?? Might indicate weak/failing motor mounts.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,067
Likes: 4,200
From: US-PNW
Agreed, but it can be done easily and safely: Put jackstands under the trailing arms so the entire weight of the rear is supported as if the tires were on the ground. I did this to test my newly built transmission before the car was roadworthy.
Thread Starter
Intermediate
Joined: Jul 2024
Posts: 47
Likes: 11
Can't decide if you are asking about the continual, low-level thumping noise or the scraping sound toward the end of the clip???
Thumping noise: still could be the NEW tires as shops don't check tires for out-of-round conditions...they should notice a bad tire, but these days, shop kids don't bother. Could also be posi needing additive to lube.
Scraping noise: radiator fan too close to shroud??? Go over a bump or a little rise and the edges of the fan rub the shroud?? Might indicate weak/failing motor mounts.
Thumping noise: still could be the NEW tires as shops don't check tires for out-of-round conditions...they should notice a bad tire, but these days, shop kids don't bother. Could also be posi needing additive to lube.
Scraping noise: radiator fan too close to shroud??? Go over a bump or a little rise and the edges of the fan rub the shroud?? Might indicate weak/failing motor mounts.
The scrape at the end was just a car that drove by me. The ticking/tapping noise you hear is the only noise its making
also these tires never made a noise when they were first put on. I just recently had some 3 finned spinners put on the wheels, and also had the weights relocated since they were visible on the outside of the wheel and I didn't want them pitting my aluminum wheels. This noise started occurring after that.