Shifter Problem

[Midn1ght Driv3r]

I've already posted on the Fiero forum, but I don't see this as a specific Fiero problem. My 4 speed will go through all of the gears except reverse. No matter how much I push and adjust the cables on the transmission, reverse doesn't seem to exist. If I put it in the bottom left (where there should be no gear) or in reverse itself - the car moves forward.

I feel like one of the issues involved with it is that the shifter doesn't stay in place after you let go of it. If I put the car in first, it will slide back and rest in 3rd gear, but the transmission will stay in first.

I'm losing my mind and looking for any ideas.

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[slowchevy]

swap an l67/65EHD , never another issue

 

[Jfrost]

But the manuals are so much more fun!

 

[wolfe]

If its popping out of gears the detents in the trans could be shot.

 

[Wrencher]

Those transmissions are a little funky they have internal & external shift selector shafts.
There is a izusu or a muncie box though. The designs are different /parts names etc...
Sounds like it possibly broke a roll pin. Never know thou, need to get into it & see.

I wouldn't drive it at all.
It will get worse if it lets you get 2 gears @ once.
Need to know really what trans you have to know where to go from here....

 

[Midn1ght Driv3r]

It's the 4 speed muncie. If it's the detents I'm guessing that I would need to break the case open?

I can go into every other gear except reverse so I don't see why it would be the roll pin? Maybe I described it wrong. I don't have to follow the shift pattern explicitly. This is my first manual car so I don't have a lot of experience with it, but I can slide it from:

R <--> 1st <--> 3rd Without having to go back into the neutral area if that makes sense.

 

[Wrencher]

Still sounds internal. The 4sp is different than the 5's.
The linkage & lockout mechanisms are internal.
( and a clusterfuck)
https://imageshack.com/a/img20/5553/lcr.gif

 

[Midn1ght Driv3r]

Could you think of any other possible reason besides the transmission itself? Otherwise I'm pretty screwed.

 

[Wrencher]

The shifter & cables are pretty simple...
In a fiero even easier to check.

Grab the linkage underhood (or trunk in this case)
Run it thru the gears @ the trans & observe the shifter.
Any problems will be obvious.

If no shifter/cable problems, you should be able to confirm it @ the trans w/ the cables disconnected.