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Strange cold startup noise
Posted: Tue May 17, 2011 6:08 am
by Zer0VIBE03
When the car is cold and as soon as I toss it into gear (Reverse out of the garage usually) it makes a prattling noise... Thought it was a loose bolt or something, but had a place replace a bunch of bolts and clips that went "missing" under the car. Still makes the noise.They checked the heat shield and everything, but it doesn't go away.When the car warms up, it doesn't make the noise.Couldn't leave the car overnight to let them duplicate the noise, and I would love to get you guys a video but I have no idea where my camera went. help?
Re: Strange cold startup noise (Zer0VIBE03)
Posted: Tue May 17, 2011 7:29 am
by djkeev
High likely hood of the internals on the exhaust have become loose and rattle until they expand from the extreme heat of the exhaust.Dave
Posted: Tue May 17, 2011 8:52 am
by cptnsolo77
Only in reverse? Does it make the noise in drive when its cold?
Re: (cptnsolo77)
Posted: Wed May 18, 2011 8:54 am
by Zer0VIBE03
it makes the noise in drive as well, but it doesn't seem to be as loud. Maybe I'll take a day under the hood and just tighten bolts or something.
Posted: Wed May 18, 2011 9:10 am
by cptnsolo77
Sounds like it might be your belt tensionener piston. Try Doing a search. Good luck.
Re: Strange cold startup noise (Zer0VIBE03)
Posted: Thu Jun 16, 2011 5:40 am
by rubendeje
I have the same problem with my 09 GT in that when first started and placed in gear it sounds like a diesel for the first minute of driving then goes away. i thought it might be valves, but not sure.
Re: (cptnsolo77)
Posted: Fri Jun 17, 2011 9:59 am
by wallyuwl
+1 on it possibly being the belt tensioner.
Posted: Fri Jun 17, 2011 10:12 am
by 09vGT
My 09 GT makes a noise when reversing too. Has always done it. Thought mine sounds like more of a rubbing noise. Sometimes worse than others..