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Old 03-12-2014, 04:12 PM   #1
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Default Mystery Trans Tunnel Noise

I have a buzzing that comes from somewhere in the transmission tunnel. It sounds almost like a heat shield. It is most audible from the shifter area. It occurs at light throttle at any rpm in any gear. Typically around 80-95kpa its silent anywhere above that.... Which is inconvenient because that is where I typical accelerate in normal traffic. Any thoughts It only happens on throttle never when I lift. I can't seem to find anywhere the exhaust might be hitting
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Old 03-12-2014, 08:25 PM   #2
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Get under the car and start hitting things with a rubber mallet. When you hear your noise, you found it.

On my car it was the downpipe shield.
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Old 03-13-2014, 08:42 AM   #3
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This sounds like heat shield rattles, keep tightening bolts and adding hose clamps until it goes away.
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Old 03-13-2014, 09:04 AM   #4
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Don't forget the shield around the cat, if you still have the OEM one.
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Old 03-13-2014, 09:17 AM   #5
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My cat heat shield rattles something terrible on acceleration. Wrapped it with a coat hanger (ghetto, I know) to stop it until I get a new one.
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Old 03-26-2014, 06:13 PM   #6
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I have a diy exhaust setup. So the factory cat isnt the issue. The chassis mounted heatshield might be the issue but I doubt that. im guessing its a gasket somewhere that is gone. I also know my rubber shfiter boot is all but destroyed. so the sound transfer is probably much more notable.
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