Rattling noise on acceleration....thoughts?
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
Rattling noise on acceleration....thoughts?
First of all I know it's nearly impossible to diagnose this issue without hearing it personally but I just want opinions... At 2k rpms through the first three gears (maybe 4th too, havent really paid much attention) I have a brief rattling sound that sounds like heat shield vibration or some type of exhaust vibration. I cannot find anything loose or where it might be coming from. I might be wrong but it does sound like its more towards the drivers side between the H-pipe and headers. My question is that if it is not an exhaust related noise are there any other common issues that would have a similar sound? Someone mentioned to me possibly bad torque tube bearings?
Racer
Joined: May 2013
Posts: 360
Likes: 6
From: Panama City, FL
First of all I know it's nearly impossible to diagnose this issue without hearing it personally but I just want opinions... At 2k rpms through the first three gears (maybe 4th too, havent really paid much attention) I have a brief rattling sound that sounds like heat shield vibration or some type of exhaust vibration. I cannot find anything loose or where it might be coming from. I might be wrong but it does sound like its more towards the drivers side between the H-pipe and headers. My question is that if it is not an exhaust related noise are there any other common issues that would have a similar sound? Someone mentioned to me possibly bad torque tube bearings?
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
Instructor
Joined: Jun 2009
Posts: 107
Likes: 0
From: Knoxville TN
I experienced the same issue with an annoying rattle. A shop I took it to showed me on the lift the only thing vibrating were the metal rings around the o2 sensors. Thankfully, after I installed headers/xpipe the issue went away.
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Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 544
From: Appleton WI
I've heard some say they get a "jingling" noise when excelerating and the cause is actually due to the diameter (too small) of the opening in the "H" portion of the H pipe. It might be what you're hearing.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
Yeah I had that same issue on my trans am. I've checked that and I have excellent clearence with my headers so its not that. I'm about convinced its cats. I was just wanting to make sure because I'm going for a dyno tune next week and I don't want to have any disasters.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
So I lifted the car the other day and beat around on the exhaust and have determined the rattling noise is definately coming from the cats, which is fine because I've been looking for an excuse to ditch them. I figured this would be a good time to delete the cats and get an x-pipe so my question is are there any x-pipes that will bolt on from the axle back system directly to a set of shorty headers, or am I going to have to cut out the cats and weld in a section to link the headers and the x-pipe?
