4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

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Old 06-05-2007, 05:43 PM
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2002GTAUTOVERT
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After repairing my spun bearing, i turned my boost down to 8psi to be safe, and took a nice 20 minutes drive. Until i noticed a sound from under the car everything was good. When im in drive and i slowly accelerate at the beginning of 1st gear and the beginning of second gear i hear a noise. i can best describe it as a bolt being shaken around in an aluminum jar. i got under the car nothing is loose. am i looking at a tranny problem here
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Old 06-05-2007, 06:25 PM
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Did you loosen your headers/manifolds to repair the spun bearing (not sure if you removed engine or heads)? If you did or even if you didnt, it might be an exhaust leak. Take a look at this video and see if the sound is similar.....I spent 2 days lookin for a loose bolt and sounded around the tranny and it ended up being an exhaust leak at the passenger side header gasket.

http://s177.photobucket.com/albums/w...ngineMouse.flv
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Old 06-05-2007, 06:31 PM
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yeah i took off the headers among other things, but i put new gaskets and sh*t on. i checked all the bolts, no exhaust leak and its not a loose bolt, as least not one i can get to.
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Old 06-05-2007, 06:33 PM
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yeah it doesnt sound like that clip in the video. its only when i barely accelerate in first gear, or when it shifts into second and im barely accelerating. its a loud metallic sound like something is rattling in a tin can and its coming only when i put the vehicle into park or when im SLOWLY accelerating in first and second gear.
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Old 06-05-2007, 06:39 PM
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I once changed a clutch on my old 88gt and after I started the car I heard a loud clanking noise........I left a damn screwdriver in the tranny bell housing, lol. Count your tools and make sure you didn't leave anything in the oil pan. I used a stethoscope (what doctors use to listen to your heart but with just the small hose at the end) to pinpoint where the noise was coming from. You can try getting a piece of metal rod or a long screwdriver and touch parts of the engine with one end and put your ear on the other end, try to narrow down the area of the noise.
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Old 06-05-2007, 06:45 PM
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lol no tools missing, ive already pinpointed the noise to the transmission/driveshaft. just wondering if anybody else had this noise, and what it was. but im not missing any tools, haha.
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Old 06-06-2007, 03:38 PM
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Update:

you guys dont wanna know how, alcohol and friends involved, but i found out the noise isnt my transmission. apparantly its coming from my passenger side exhaust pipe, and echoing all the way down to my midpipe, hence why i thought it was near the driveline. no clue what it is, but im hoping its just a loose hangar.
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