Vibration in clutch pedal???

[OldSven]

I have a 2000 4Runner, 5spd, V6. I put a new factory clutch in about a 2yrs ago, also installed a new slave cylinder about 3 months ago. Greased all points and just replaced the clutch pedal spring with the TrueValue #70 linear spring (which is a great mod).

The issue I'm having is when the engine is running and you press down on the pedal you can feel vibration in the pedal. After everything else being replaced the only other thing I can think of that it could be is the master cylinder but not sure if that sounds right.

Any input or experience with the same issue would be great!!!

Thanks.

 

[OldSven]

So I spoke with a buddy of mine and he said it is most likely the throwout bearing or some bearing transfering vibrations. I don't feel it when the engine is off so probably isn't the master cylinder. All the bearings were new when I did the clutch install so could just be one of them being weird for me...

 

[troopa4life]

Do you get the vibration across the whole rpm band or when you get up to 4k and above??? I still have an issue whenever I go above 4k and feel a vibration at the clutch pedal... other than that the truck runs great with no issues. I am going to replace my master and slave this spring and will keep you posted if it helps. Let me know if you find a solution to your issue.

 

[quicksilvr]

Sounds to me like your flywheel is out of balance. Thankfully these trucks just have single-mass flywheels, so your issue is probably one of these things:

-Pilot bearing mis-aligned
-flywheel is damaged
-bolt(s) missing from flywheel


Or possibly the throwout bearing. But you'd normally hear the throwout bearing if it was bad enough to cause vibes.

 

[OldSven]

I had the flywheel resurfaced (stone kind not brake lathe). All new bearings and clutch parts. It could be the throwout bearing. Not sure how the vibes are transfering through the pedal when the pedal isn't even connected to the tranny but must be doing something with the hydralic feedback.

 

[quicksilvr]

I had the flywheel resurfaced (stone kind not brake lathe). All new bearings and clutch parts. It could be the throwout bearing. Not sure how the vibes are transfering through the pedal when the peddle isn't even connected to the tranny but must be doing something with the hydralic feedback.

DIi the vibrations start right after it was resurfaced? They could have messed up when grinding it down. Might be a heavy spot on it. Just saying, it's possible. Not likely, but possible.

 

[Stick Figure]

you just replaced the slave and it started? How is the free play in the clutch pedal? If that isn't set to a factory level you could be pushing the throw out in too far. Does the pedal only vibrate when pushed in 100%? That would be the first area I would look in, assuming the adjustment is good, I would put my money on the throw out bearing actually being bad.

 

[OldSven]

I have just been noticing the vibes lately but have been working other bugs out so probably didn't notice it as much but everything works fine and was fine after the clutch job. I have messed with the free play both directions when I was trying to get rid of the famous "clutch chirp". My clutch pedal spring bushings were shot and the spring was wearing into the clutch pedal so I swapped for the #70 TrueValue spring which that along with some moly lube on the the slave cylinder pin and the fork springs that you can see through the peep hole the chirp is gone.

But back to the vibe there is no noise from the throwout bearing and being that all the parts were installed correctly by the book I'm going to try everything else first.

But keep the ideas coming, the answer is in there somewhere!

 

[OldSven]

If the rod that goes from the clutch pedal into the master cylinder is to loose inside the cylinder would that be it? I have noticed that when you push the pedal down that rod has a lot of movement to it more so than the one in my 89' Toy pickup.

 

[OldSven]

Threw the dynamic damper back on the transfer case, it was all bent up from something I hit and squeaked a lot so I took it off to see if there was any difference. I got the bracket pretty straigt with the help of a "big hammer" and bolted it back on. Seemed a little better just in the driveway I will take it out later and see how it feels. Wouldn't be just my luck that is it and have to add 10lbs back on the pig...:violin:

 

[OldSven]

Well it helped some, but the vibe is still there but it is more noticable when you shift and are letting the pedal back up.

 

[foo]

just replaced the clutch pedal spring with the TrueValue #70 linear spring (which is a great mod).

I realize this thread is mostly about the vibration felt, and that the thread is old, but I found this thread searching for how people solved the problem of the #70 hardware store spring NOT hitting the clutch pedal assembly bracket when the pedal is fully depressed.

Since the OP replaced the double-coil torsion spring with a linear tension spring, I was wondering if the OP has a long term report for us on how the #70 spring is holding up.

My clutch pedal spring bushings were shot and the spring was wearing into the clutch pedal so I swapped for the #70 TrueValue spring

Specifically, I'm wondering if the OP has ever had problems with clicking sounds or hanging up which happen when the #70 tension spring hits the brake pedal assembly bracket as described here.