down shift keeps gringing into reverse gear

[DG624]

I have done everything (rebuilt trans, shift rod bushing, factory short shift, ...) but I still can't get the trans into first easily when stopped or into reverse unless I depress the clutch several times. I have constant problems with the 5th to 4th shift hitting reverse. It can't be done quickly unless you wait a second before you engage 4th.

[EC900]

jgurnari - it could be a fore/aft adjustment. Shift fork issue (?) low on gear oil (?) other possibilities coming up with a just a tired 915 that hasn’t seen a 100k rebuild or a basic fluid replacement.

Most unfortunate exasperation to get a different adjustment result. Are your reference marks lining up and remaining after those test drives? Are the older ref. marks still there to go back replicate the early issue?
I find adjusting the coupler a pain, removing the pass. seat made more room to eyeball marks and easier to access shifter positions while watching coupler.
But….
I say remove that console this weekend and dig deeper, inspect/order Pelican parts, then next weekend replace, adjust, and ‘banish the console’ next weekend. Once you get it off you’ll better see what action is going on and where the adjustments are affected.

I think Porsche aficionado Jerry Seinfeld may have once said; ”That’s the deal with those air cooled 911 consoles. They cause more consolation than comfort”.

Here’s another good video on adjustment and features the 5th/4th/R lockout, around the 7:00 minute mark, but the whole video by him (at Garage Time) is well spoken and produced reference…..

https://www.youtube.com/watch?v=tEdOeHUYjU0

[proporsche]

Originally Posted by jgurnari

that picture is not my car

you are funny
this picture is to quide you where your problem could be-i did not say it is your 911..
here is another pic of the cup with the screw-which could be loose on the shift rod..
Ivan

[jgurnari]

Took a WHILE, A LOT OF ADJUSTING IN A CRAMPED SPACE but an adjustment did the trick! Thanks for the help

[jgurnari]

Actually, I still have the same issue. Thought I was hitting every gear but when I shift to 5th, it feels like its 5th gear postion but it is 3rd again...goes to reverse, and all other gears but not 5th. Brutal!

[EC900]

jgurnari - For your consideration:
If your shift rod bushing is broken and the shift rod is flopping around, each time you make an adjustment you’re not actually getting it right because without a shift rod bushing for stability, your going to be off by appx. 3mm (?)…the side wall thickness of that bushing.
Now transfer that movement down the length of the shift rod to the coupler and the adjustment becomes a probably another 2mm larger.
And this also doesn’t account for if the ball cup socket bushing is also deteriorated and maybe the bushings in the coupler.

The effect of the shift rod movement is that like a pendulum, though not as extreme.
Fixed on one end (at shifter) it subtlety sways or offsets at the other end at coupler (which has its own natural wiggle room) and because nothing is holding the shift rod steady during the adjustment (maybe besides a hand to tight set screws).
Without the stability of a shift rod bushing.. and if the shift rod is leaning and held to the right side (or left) inside the bushing bracket, that adjustment could still would be incorrect, same if you’re trying to center the shifter in Neutral position w/o a bushing, it’s not correct and putting the adjustment off position.

Given the fact even with all new bushings along the shift process, adjusting is still tedious to get it right.

The older I get the smaller the 911 interior gets. Pulling the seat (and your console .…will make a big difference.
For what it’s worth, I needed a stubby end allen wrench (4mm?) to remove set screw on the shifter ball cup fitting which is indexed with slot on the shift rod (see proporshe photo) plus it was rusted tight on the shift rod. Something to prep for with PB Blaster.

[jgurnari]

Thankfully I did not have to take out the console!...I finally got the right setting on the linkage...and hopefully it stays for a while and it does not slip.

Originally Posted by EC900

jgurnari - For your consideration:
If your shift rod bushing is broken and the shift rod is flopping around, each time you make an adjustment you’re not actually getting it right because without a shift rod bushing for stability, your going to be off by appx. 3mm (?)…the side wall thickness of that bushing.
Now transfer that movement down the length of the shift rod to the coupler and the adjustment becomes a probably another 2mm larger.
And this also doesn’t account for if the ball cup socket bushing is also deteriorated and maybe the bushings in the coupler.

The effect of the shift rod movement is that like a pendulum, though not as extreme.
Fixed on one end (at shifter) it subtlety sways or offsets at the other end at coupler (which has its own natural wiggle room) and because nothing is holding the shift rod steady during the adjustment (maybe besides a hand to tight set screws).
Without the stability of a shift rod bushing.. and if the shift rod is leaning and held to the right side (or left) inside the bushing bracket, that adjustment could still would be incorrect, same if you’re trying to center the shifter in Neutral position w/o a bushing, it’s not correct and putting the adjustment off position.

Given the fact even with all new bushings along the shift process, adjusting is still tedious to get it right.

The older I get the smaller the 911 interior gets. Pulling the seat (and your console .…will make a big difference.
For what it’s worth, I needed a stubby end allen wrench (4mm?) to remove set screw on the shifter ball cup fitting which is indexed with slot on the shift rod (see proporshe photo) plus it was rusted tight on the shift rod. Something to prep for with PB Blaster.

[Bill Verburg]

The clamps also go bad and slip

Wevo has a nice upgrade

[jgurnari]

Well, i got is back to shifting into every gear... BUT back to square one...it still shifts to Reverse when downshifting from 5th to 4th.

Will take your advice...thanks all!

[proporsche]

Originally Posted by jgurnari

Well, i got is back to shifting into every gear... BUT back to square one...it still shifts to Reverse when downshifting from 5th to 4th.

Will take your advice...thanks all!

ok at this point would make a video of how does this happen?

Ivan