Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

Am I the only one whos tranny rattles like a little ***** in neutral?

Old 03-18-2007, 11:45 PM
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Default Am I the only one whos tranny rattles like a little ***** in neutral?

When my cars idling in neutral my transmission sounds like a can of marbles rattling around, and it only goes away when I rev it up past 1500-2k, or push in the clutch pedal so the clutch is completly disengaged. Is this normal? It shifts smooth and everything, and I've been beating the hell out of it for the last 2-3 years and it's been holding it fine, but its VERY annoying. You can hear it over my true duals so its pretty loud....
Old 03-19-2007, 06:59 AM
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Yeah it happens, i wouldnt worry about it too much though.
Old 03-19-2007, 07:46 AM
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Yup... mine does that as well.
Old 03-19-2007, 10:27 AM
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My shifter had Parkinsons. It has real bad tremors when idling. I don't know if my cam is causing this problem but I think I need to go to the doctor to have him give my shifter a thurough exam so I can go to CVS to get a prescription filled out that will control the tremors.
Old 03-19-2007, 10:35 AM
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Originally Posted by purdueranger
My shifter had Parkinsons. It has real bad tremors when idling. I don't know if my cam is causing this problem but I think I need to go to the doctor to have him give my shifter a thurough exam so I can go to CVS to get a prescription filled out that will control the tremors.
try a poly trans mount yet?
Old 03-19-2007, 07:10 PM
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Originally Posted by brad8266
try a poly trans mount yet?


Mine does the same thing with Poly mounts all the way around.
Old 03-19-2007, 07:48 PM
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mine seem fine with poly all around.
Old 03-19-2007, 10:15 PM
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mine is quiet as can be but with my big *** cam that shifter is all over the place at idle haha and i love it.
Old 03-20-2007, 02:00 PM
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I think the reason that the tranny rattles badly in neutral is because the bearing that the input shaft rides on is slightly worn. When the clutch pedal is in, the input shaft is not moving and the bearing is not beaing used.

When the clutch pedal is off the floor, the input shaft bearing is being used and since it is worn, causes more vibrations than if it were new.

BTW mine does the EXACT same thing!
Old 03-21-2007, 02:15 PM
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My tranny is "rebuilt". I bought it as a T56 swap and I guess it wasn't rebuilt.
Old 03-21-2007, 06:47 PM
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Mine rattles too. No big deal. Mine IS freshly rebuilt.
Old 03-22-2007, 06:02 PM
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mine rattled til i put in solid motor mounts. i now have ZERO shifter movement.
Old 03-22-2007, 09:09 PM
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Mine does the same, but it's not that loud - you have to listen for it but it's there. I drove around without the center console out for a couple of days after upgrading the hydraulics, and you can here it when the trans is exposed right under you for sure.
Old 03-22-2007, 10:42 PM
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I just got my shifter gaskets in, hopefully it will help quiet it down inside the car. For $7 its worth a try...
Old 03-23-2007, 01:12 AM
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I just rebuilt my transmission also and it does the same exact thing.
Old 03-23-2007, 08:59 AM
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I just put a used tranny in my T/A and it does not rattle. Are you sure your rear mount is installed correctly?
Old 03-23-2007, 10:16 AM
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Originally Posted by Krab
I just rebuilt my transmission also and it does the same exact thing.
did you change pilot bearing and throw out bushing? is that what they are called?
Old 03-23-2007, 01:49 PM
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Originally Posted by 2MCHPWR
did you change pilot bearing and throw out bushing? is that what they are called?
No, I didn't swap out the pilot and throw out bearings. I had swapped them out ~20k miles ago when I did my clutch swap, and the marble noise was still there after I did that.
Old 03-30-2007, 01:07 PM
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The sonofabitch rattles like about ten marbles are loose in mine too. Is starting to scare me, and I can hear the noise while driving.

It did it before and after new clutch, and worse after.
Old 05-21-2007, 04:15 PM
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mine does too, and i have a newly rebuilt t56, and a new motor, and a new clutch.....


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