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Legacy Exhaust Rattle- Need help
Posted 12 August 2009 - 07:30 PM
I am currently experiencing an exhaust rattle. It happens only at 2100 rpm. I viewed the car from underneath while my friend revved it to 2100 rpm and I have isolated the rattle to one specific pipe. The pipe is the passenger side half of the y pipe that comes directly out of the motor. All three of the bolts are snug, and I can't seem to figure out why it is loose.
Has anyone had this issue with their vehicle? I am thinking that I can easily replace that one section of exhaust pipe, but I couldn't easily locate a replacement part. Does anyone have any suggestions? Do I need to replace the whole exhaust system (which is in otherwise good conditon)? Any advice would be greatly appreciated. Thanks!
Posted 12 August 2009 - 07:33 PM
Posted 13 August 2009 - 12:05 AM
Posted 13 August 2009 - 11:40 AM
I have had this problem on both of my OB Wagons. I had a friend rev the motor up to the rpm that resulted in the rattle sound, then hold that rev so the sound would continue. Then, I crawled under the car and pushed/pulled on the shroud with my gloved hand and a screw driver until I found which portion of the shroud was loose. I cured the problem by hammering in a bolt as a wedge between the pipe and shroud to prevent the shroud from vibrating. Other guys have used a screw type hose clamp over the shroud to stop the vibration.
Hope this info helps!
Posted 13 August 2009 - 05:55 PM
Posted 13 August 2009 - 06:16 PM
Its a heat shiled easily fixed with vice-grips or a large hose clamp.
Sheet metal vibrations - sometimes a well placed blow with a ball-peen hammer will cure it. We had a customer with a pump that made a "strange noise" - the tech listened carefully to it..... went out to the truck and got his ball-peen hammer - smacked the motor fan shround with it one time.... no charge.
Posted 13 August 2009 - 11:28 PM
Posted 14 August 2009 - 01:25 PM
Posted 14 August 2009 - 04:03 PM
I have the same noice/resonance when the fan kicks in while Parked. It surely sounds like vibrating sheet metal. Any ideas where exectly this could be coming from?
post #10 here, lots of good info , keep it as a reference.
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