Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: GDawg148 on November 18, 2016, 03:41:09 PM

Title: Loud/Annoying Noise from under... help
Post by: GDawg148 on November 18, 2016, 03:41:09 PM
So, recently this noise from underneath the car has came about.  It's a rattlings type noise.  Here's a link to the noise...

Noise
https://www.youtube.com/watch?v=Q3wYi-HFkoo

When I got back from driving it (right after the video was taken), the noise disappeared.. its been on and off, very inconsistent..

No noise
https://www.youtube.com/watch?v=fSNYDSieOUY

Is it exhaust?  Something loose maybe?  Can't seem to figure it out.
Title: Loud/Annoying Noise from under... help
Post by: Haystack on November 18, 2016, 10:11:31 PM
Sounds like exhaust to me. Kinda like a cat heat sheild.
Title: Loud/Annoying Noise from under... help
Post by: GDawg148 on November 19, 2016, 01:01:47 PM
The weird part is that I don't have cats.  Maybe loose from an exhaust hanger?

Quote from: Haystack;458025
Sounds like exhaust to me. Kinda like a cat heat sheild.
Title: Loud/Annoying Noise from under... help
Post by: jcassity on November 19, 2016, 10:57:45 PM
get under there and listen,, with no cats, it should'nt be all that hard to find.
could be your ebrake cable hitting where it crosses over,, maybe you lost a spring that holds the cable up?
Title: Loud/Annoying Noise from under... help
Post by: MY83T on November 21, 2016, 12:27:15 AM
This may sound dumb, but in the first video, you are sitting over a drain of some kind, and the 2nd video not?  Could that be a strange sound resonance coming off the drain?  Sound can bounce around in really odd ways.... just a thought.
Title: Loud/Annoying Noise from under... help
Post by: GDawg148 on November 21, 2016, 11:41:57 AM
Quote from: MY83T;458131
This may sound dumb, but in the first video, you are sitting over a drain of some kind, and the 2nd video not?  Could that be a strange sound resonance coming off the drain?  Sound can bounce around in really odd ways.... just a thought.

Good point, but no.  I used that brick car wash to amplify the sound from under the car for the videos sake.  You can hear the sound from the inside of the car, and I remember hearing it just randomly stop on my way back home (second video).
Title: Loud/Annoying Noise from under... help
Post by: GDawg148 on November 21, 2016, 11:46:51 AM
I've been limited on what I can do at my apartment at college because of not having access to ramps.  I plan to pull the car up on ramps on Thanksgiving when I visit home.  I know I'll probably be able to find the issue when I get under the car.
Title: Loud/Annoying Noise from under... help
Post by: jcassity on November 22, 2016, 10:26:35 AM
drive up on the parking curb.
Title: Loud/Annoying Noise from under... help
Post by: GDawg148 on November 22, 2016, 10:56:35 AM
Quote from: jcassity;458173
drive up on the parking curb.

Haha, actually tried this.. car is too low.
Title: Loud/Annoying Noise from under... help
Post by: Aerocoupe on November 22, 2016, 03:06:42 PM
I lost the sprag bearings out of my starter when my car had the AOD in it and it made some weird racket with the bearings tumbling around the converter.  Not saying this is it but maybe.  Pulled the inspection plate and that is how I found out.  Sure did start good after that...ha ha ha!!!