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Old 08-21-2012, 06:02 PM   #1
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Thumbs down Vibrating clutch peddle

I have changed from a freshly machined flywheel and advanced auto clutch/pressure-plate kit, that vibrated,
to a factory ford 300 dollar clutch kit with brand new flywheel and it still vibrates when I let the clutch out. Sometimes it vibrates the clutch peddle and sometimes it doesn't. I can keep it in 4th gear, press in the clutch and let it out, and it'll vibrate then. I can then press in the clutch and let it out and sometimes it'll stop vibrating.
I've read all I can about it but everyone keeps saying its a throwout bearing or replace the quadrant. This isn't a fix.
With everything I've replaced, its gotta be input shaft bearings or something.
I've spun the input shaft each time the trans was out and there is no warping or damage I can see on my dial indicator.
This is very frusterating.
Anyone ever really fix this problem?
Out of all the mustangs i've had, this is the only one that does this.
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Old 08-21-2012, 08:15 PM   #2
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Re: Vibrating clutch peddle

you said it can't be your quadrant...do you still have the stock plastic one in there?
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Old 08-22-2012, 08:51 AM   #3
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Re: Vibrating clutch peddle

yep, still got the factory one in there. Works like a champ.

I'm pretty sure something is hosed with the input shaft or something. I can feel the vibration throughout the entire clutch peddle range.
so pissed
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Old 08-22-2012, 11:02 PM   #4
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Re: Vibrating clutch peddle

why leave the plastic piece of crap though? even if it's not the vibration issue just saying. well hope you find the problem
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Old 08-23-2012, 04:04 PM   #5
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Re: Vibrating clutch peddle

Yea, I hate these types of problems.
It can't be 2 bad clutches in a row.

I know that the clutch fork had wear marks where the T/O bearing rides.
I know that the input bearing retainer housing (aluminum stock one) is worn badly. It was all pitted up from the previous owner and was super hard to move. I sanded it down till it was smooth again and it may be causing the T/O bearing to wobble?
I found a steel bearing retainer at mustangresto for like 39 bucks.
My only ideas are to buy the following:
steel bearing retainer
clutch fork
motorsport HD T/O bearing

The flywheel is brand new and pilot bearing is also. Everything is torqued perfectly and same problem as previous clutch.

Only other thing I can think of is the input shaft bearing somehow has a worn/warped bearing race and its causing the input shaft to bounce in and out. Guess I'll be able to see damage when I get the bearing retainer off.
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Old 08-23-2012, 11:51 PM   #6
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Re: Vibrating clutch peddle

hopefully it's just a race issue and you can get that swapped out...at least that's a part most autoparts keep on hand.
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