CRG Discussion Forum

Camaro Research Group Discussion => Maintenance => Topic started by: mcp on November 09, 2007, 10:13:57 PM

Title: Muncie M-21 Help
Post by: mcp on November 09, 2007, 10:13:57 PM

During hard de-accelleration in fourth gear @high RPM and let off the gas, my transmission jumps out of gear.  Fourth gear and only fourth gear.  Does anyone else have the same sympton and does anyone know the fix?

Title: Re: Muncie M-21 Help
Post by: Marty on November 10, 2007, 02:39:30 AM

My trans does that too. I've been told the synchros are bad.

Title: Re: Muncie M-21 Help
Post by: 68Zproject on November 10, 2007, 07:24:20 AM

From my dark past I remember that as a bad synchro.

Title: Re: Muncie M-21 Help
Post by: fireZ on November 10, 2007, 01:15:30 PM

I had that happen and it was the syncros

Title: Re: Muncie M-21 Help
Post by: x77-69z28 on November 12, 2007, 07:55:16 PM

yup. the brass rings in the three four synchro. it is an easy fix. jerry will do it for you.

Title: Re: Muncie M-21 Help
Post by: Jerry@CHP on November 13, 2007, 01:51:22 PM

It's not the synchros, it's the 3-4 slider that causes that.  The brass rings slow the gear down so it can go into the next gear.  When a trans grinds when going into gear, that is the brass rings going bad.

Jerry

Title: Re: Muncie M-21 Help
Post by: fireZ on November 13, 2007, 05:26:00 PM

Thanks for the info. Jerry,I was told it was my syncros also and it did not fix the problem.