Reverse acting up, bent shift fork? *vid inside*

[YZF-Ford]

So what the car is doing, is when I put it in reverse and back up, the car lurches, like the transmission is binding up. When I push the clutch in, I can hear the lash of the gears bouncing back and forth, and I have to push the clutch in and out while pushing on the shifter to get it to come out of gear. It's perfectly fine going forward. The shifter feels like it goes into gear like it's supposed to. I put the car up on jackstands and let it spin in reverse and took this video. Does it sound like a bent shift fork? It almost seems like maybe it's stuck between reverse and another gear? I crawled under the car and tried running it through the gears (the car off, of course) by hand by grabbing the shift rod, but it goes into gear fine. Here's the video.

http://www.youtube.com/watch?v=a0fFsxRVi3E&context=C32af149ADOEgsToPDskKF11Vg7ORZ14CYgBn_EDj5

 

[SHOspazz92]

Bump!

 

[SHOspazz92]

I think it is important to note this car has some kind of super grabby clutch in it. My guess is a pucked clutch.

My guess is its the clutch disc. MOAR opinions are probably wanted.

-Sam

 

[Phoenix]

I dont know what the problem is , but I think you are gonna have to pull the tranny , and if the clutch is fine , open the MTX.

 

[Blackdr16]

^Agreed^

 

[Lorenr]

Puck Style Clutches

If it really is a "puck style" clutch, then that could be your problem. They normally are not built with a "Marcel" spring and are a pain in reverse. The "Marcel" spring is that wave shaped spring attached to the clutch hub. It is there to absorb the shock from engaging the clutch. Going forward is bad, going in reverse is worse. Competition clutches don't have them because they are designed for abuse and not ease of engagement.

Puck style clutches are not a good idea for the street. If it only is seriously noticeable in reverse and not so much in forward, then the clutch is probably the problem.

Ford "Long style" truck and hot street car clutches are famous for the Marcel going flat with the same result.

 

[YZF-Ford]

You think it could be the clutch, even if it still does it if I put it in gear with the car off, and then start it up? It wouldn't surprise me if it was the clutch or the clutch damaged the transmission. It was always hard to put in gear, and wouldn't disengage until the pedal was on the floor, and then engage at the top of the pedal travel.

 

[Lorenr]

I'm not driving it

I may have misunderstood. If the clutch will not release then:

a. Check the clutch linkage. Cable, release shaft or fork on the transmission, pedal linkage. Check all of it very carefully. Check travel.
b. Throughout bearing. This is also very important.
c. In order to shift the transmission, the clutch must release cleanly. Anything else is BAD.

 

[YZF-Ford]

No, the clutch will release, just possibly not 100%. Like I said, it seems like something in the transmission is binding up, causing it to lurch and make the noise like in the video when up in the air. I can see the engine torque over at each lurch. It's fine going forward, although I haven't tried taking it down the road since it started this.

 

[kevinspann]

5th and reverse share a shaft and what not, so if it's fine going forward, I wouldn't imagine it being the trans.

I would go with Sam on it possibly being a clutch issue.

 

[jelloslug]

I'm going to go with a clutch problem too. Everything is just too closely packed inside the tranny for there to only be a problem like that just in reverse.

 

[zak]

No, the clutch will release, just possibly not 100%. .

Your pressure plate fingers are worn preventing complete release*. If you leave it go you will eventually have issues putting into first (which is synchronized, unlike reverse).

* One final thing to try before concluding this - with engine running clutch in, shift to first then reverse this will get the shafts turning at similar speeds.

 

[YZF-Ford]

* One final thing to try before concluding this - with engine running clutch in, shift to first then reverse this will get the shafts turning at similar speeds.

I've always had to do this. I'm going to replace the clutch in the next month or two and see if it fixes it, but I'm expecting the worst.

 

[turbo79]

I've always had to do this. I'm going to replace the clutch in the next month or two and see if it fixes it, but I'm expecting the worst.

I had a failed clutch that included a broken strap, and the tranny/car behaved just like what you are describing.

 

[YZF-Ford]

Found the problem. The pilot bearing had disintegrated. That explains why it never wanted to shift at high RPMs, too.

EDIT: Upon closer inspection, the input shaft is bent. **** me running.

EDIT 2: Just found out that the car doesn't use a pilot bearing.

 

[AREA 91]

Found the problem. The pilot bearing had disintegrated. That explains why it never wanted to shift at high RPMs, too.

EDIT: Upon closer inspection, the input shaft is bent. **** me running.

EDIT 2: Just found out that the car doesn't use a pilot bearing.

How do you know that the input shaft is bent?
I have not seen an MTX with a bent shaft.
They either break or the bearings go bad.

 

[YZF-Ford]

A bearing must have broken then, the input shaft is crooked.