Setup:
GSR tranny ACT clutch and pressure plate.

Problem:
Tranny shifts through 1st and 2nd gear perfectly, when going to 3rd gear with a normal style shift (at any RPM) it will not go into gear. If I depress the clutch shift to neutral then release the clutch then depress the clutch again and rev match the tranny will shift into 3rd gear perfectly, no extra force or grinding or anything. The same scenario is true with the 4th gear shift also.

Questions:
#1. Is the rev matching the reason it is shifting at all (seems to be)?
#2. Why would 1st and 2nd shift good as new if it is a clutch problem?
#3. Is it the synchros?
#4. If #3 is possible does anyone know how much thats gonna set me back?

Thanks very much for any and all help, I am completely at a loss when it comes to transmission problems and this seems to be a pretty bad one

 

More info:

Tranny will shift the first couple times through all the gears when I start out in the morning or after the car has sat for several hours.

Tranny shifts fine when the car is running but not in motion.

Please help me out guys....I dont want to have to get another tranny if I dont have to.....

 

Bump please.....any help is greatly appreciated

 

At first, I thought it was a bad "shift piece" inside the transmission. However, if you can shift when the car is still or when cold, that wouldn't be it.

Bad 3/4/5 synchros come to mind. Try changing the transmission fluid first, give BG Synchroshift a try, and you shoudl notice some improvement. If it's still not working right at normal operation temp/normal RPM, then replacing the worn synchros is the next step. Unless you're going to do this yourself, a new transmission is what most people do in this situation.

 

Thanks for the info......I will drain and get some fresh fluid in there ASAP

 

PM'd

 

i'm thinking 3-4 shift collar set. $140 at stealership, maybe you can find it used. i think all b-series hydro are the same, but don't quote me on that b/c i don't have more than 1 around to compare to each other. and no, i won't sell the set i have right here. it's going back into a gearbox.