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Rattle from under car, not exhaust

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Rattle from under car, not exhaust

Old 12-10-2007, 08:56 PM
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Join Date: Mar 2006
Posts: 187
Default Rattle from under car, not exhaust

I have a slight rattle from underneath the back of the car when I take off or accelerate from a roll. I thought it was my GTA's but when I sit in the car and have someone shakeand kick the pipes, it is not the same rattle I am hearing. Is there any other things that loosen up on the back of the stangs?
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Old 12-10-2007, 09:21 PM
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Location: Anaheim, California
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Default RE: Rattle from under car, not exhaust

Check the clamps on the GTA's. Sometimes an exhaust leak under accel sounds like a rattle...Also, there is a heat shield right under the drivers seat that on mine, was rattling against the frame.....

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Old 12-10-2007, 09:29 PM
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Default RE: Rattle from under car, not exhaust

My transmission sounds like it's chattering under a load. I don't know if it's something to concern myself with or not.
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Old 12-10-2007, 09:51 PM
Join Date: Sep 2007
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Default RE: Rattle from under car, not exhaust

Check the foam under your rear bumper cover. Mine rattles bad I just haven't had time to take the cover off and don't want to take it to the dealer, just don't trust them taking the bumper off.
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Old 12-10-2007, 10:45 PM
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Default RE: Rattle from under car, not exhaust

Is it at all rpm's or just at a specific rpm's? mine makes a slight rattle or knock between 2500 and 3300 usually only in 2nd,3rd, and 4th gear. It is not noticable if I accelerate slow with minamal load, or at full throttle, sure drives me nuts somedays. I would also like some new ideas?
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Old 12-11-2007, 12:08 AM
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Join Date: Aug 2006
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Default RE: Rattle from under car, not exhaust

I just bought an '05 gt auto 6 days ago. I took it to the dealer today for the same problems you guys are explaining and they ordered a new trans. crossmember. Thes is a TSB on the exhaust insulators on the trans crossmember being bad and causing a rattleat certain RPM's mine will even rattle in drive full brake it will just start rattling. They alsoare going to fix the front suspension knock.
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