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Transmission Woes

This is a discussion on Transmission Woes within the Manual Transmission forums, part of the Drivetrain category; 97 TA m6 lt1 Got some wierd noise going on in the transmission area. As long as the clutch is ...

  1. #1
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    1997 Pontiac Trans Am

    Transmission Woes

    97 TA m6 lt1
    Got some wierd noise going on in the transmission area. As long as the clutch is engaged there is noise, be it moving, idle, in or out of gear. It becomes louder when in gear and moving, but remains present in neutral idling. As soon as I push the clutch down to the floor, I hear whatever is spinning wind down and stop, noise goes away. When I let it back up it comes right back. I'm also hearing a lot of clunkiness that wasn't there before in just all around operation of the tranny. So basically whatever part of the tranny is always spinning EXCEPT when the clutch is disengaged is my problem....what is it?

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Probably the input shaft bearing or pilot bearing. Most likely input shaft bearing. Time for a trans rebuild or replacement.

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    Sadness T_T Well I removed it today and took it to a local shop, while they've got it apart are there any upgrades I could have them put in with it? I keep to the firebird mentality of every death she comes back stronger, so anything that could be improved--I'd be all about it.

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    There is a steel 3-4 shift fork to replace the stock aluminum one that tends to bend on hard aggressive shifts. There are also bronze shift fork pads to replace the stock plastic teflon pads. There are other upgrades but those are the 2 main ones I can remember off the top of my head.

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    bad bad bad

    Either I'm a big dumb retard or I'm a big dumb retard. I got so focused on the theory of a transmission bearing I ripped it out and gave it to the guy to tear it down. I sat with him and had a couple beers as he tore it apart and he found pretty much NOTHING wrong with it. He said one of the race bearings had a little wear on it but nothing serious enough to cause a noise. The only other wierd thing was one of the tabs on top of the key in a synchro assembly was somehow bent slightly. But it was off the mainshaft so theres no way it had anything to do with the noise. So basically I'm almost positive that if I go take the 10 minutes to remove the clutch and flywheel and inspect the pilot and throwout bearings I'll find my relatively cheap problem. Too bad my tranny's already in pieces and I'm gonna be out a ton of cash. My only solace is that hes letting me watch him work so I can learn something and that I'll be upgrading my tranny a little. I really have to quit attacking my car problems with tunnel vision....this one really cost me.

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