Transmission locked out of Reverse

[Wicked95AWD]

My car has been down for several months while building my new 2.4l engine and I need to work on the tranny while it's out of the car. My car (right before the 7 bolt blew ) stopped shifing into reverse. I checked the linkage and clutch engagement and they were both fine. I consulted with my local mechanic and he agreed that there is something wrong internally within the transmission that has it locked out of reverse. The strange thing is 1st through Fifth gears shift fine. I'm going to try and pull the cover tonight and check the wave spring and make sure the nut that holds it on has not fallen off (I read about this on a couple of posts with similar problems) Is there anything else I should check while I'm in there?

 

[FastGS-T]

mine did that but ended up being a bent shift fork WTF

 

[92GSXBaltimore]

when you say it is locked out of reverse, do you mean that the shifter can not physically be put into the 5th position, or do you mean that the transmission wont engage 5th gear?

it could be a couple things:
1. your idler bushing could be screwed up
2. your reverse idler gear, or counter reverse gear coould be screwed
3. either your reverse sliding gear, or your reverse syncronizer cone could be siezed

p.s. if it is a bent shift fork, it shouldnt go into 5th either

p.s.s. if you need to go in reverse, just spin the engine backward and put it in 1st

 

[Wicked95AWD]

if you need to go in reverse, just spin the engine backward and put it in 1st

HAHAHA, I actually read an issue of super street where a guy put an extra engine and tranny in the trunk of a tiburon and reverse geared it to make the car AWD, I think it ran 10's... kinda sad that it took two engines and transmissions to do it though.

Anyway, back to my tranny, before my 7 bolt blew, I was able to shift into 5th gear with no problem at all, but it was locked out of reverse completely. So, I guess that means my shift fork isn't bent, how do I diagnose weather or not it's the other two issues you mentioned?

 

[Wicked95AWD]

I called shepracing today and they suggested that the reverse light sensor simply needed a washer underneath it. I haven't tried it yet, but when I pulled the sensor out I noticed that one side of it was scored as if something was hitting it internally. If that really is the problem it sould save me alot of time and money I was worried about having to spend to fix the problem.

 

[Wicked95AWD]

Well, I found the problem.

Grinding into 5th gear at 70+mph is bad mmmmmkkaaaay....

I took the end cover off of the transmission and removed the 36mm nut holding the 5th reverse gear assembly on. Apparently the 5th and reverse gears are not supposed to be completely fused to one another! WTF I carefully applied my BFH to the inner gear and finally managed to separate it from the outer gear. I then used a small file to fix the mangled teeth on the outer gear so that the two gears slide in and out from one another smoothly. I then simply re-installed the 5th/reverse gear assembly and tightened the 36mm nut and re-applied the end cover to the tranny and tada the tranny shifts smoothly into reverse again!