Alright, ever since I bought my Iroc it has had a shaky speedometer and I got the gear replaced cause it was really wore down to a complete circle and now after about 6-7 months its shaking again I was wondering if anyone knew if this is an actual tranny problem or what was up.

 

Gear in the trans or gear on the pickup?

 

the little plastic speedo gear in the trans

 

Hmm... That is odd, I never had that happen, is it a cable speedometer?

I did a search and only found this:
http://www.allfordmustangs.com/forum...do-i-need.html

They had the gear wear problem too, but never actually said what caused it.

The only thing I can think of would be incorrect gears, or something is causing the plastic gears to drag (like the cable in a mech speedo) If yours is cable, try to spray some WD-40 down it after pulling the cluster forward.

 

It is a mech speedo and the cable turns fine so Im thinking it may be the incorrect speedo gear....the mechanic i took it to when i was clueless about it said my transmission is messed up but in my opinion it shifts and works just fine so I think he may be wrong on that note

 

Did you take a look at the drive gear? If it's gone bad for some reason, its condition might causes issues with the driven gear.

JamesC

 

That is a very good idea as a matter of fact