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#1
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Clutch pedal rattle, any bushings?
So when I drive my car I hear a rattle from the clutch pedal, if I pull the pedal up with my foot or put a little pressure on it the rattle goes away. It was doing it last year and I had the transmission out and replaced the throw-out bearing. It is still doing it. I had a trans shop test drive it for another issue and had him listen for the noise, he heard it and said it definitely isn't a throw out bearing noise.
I looked under the dash and do not see anything loose or rattling. The clutch rod goes through the pedal through a big rubber plug and then a washer and retaining pin. I don't notice any excessive play anywhere with the rod or the pedal itself, the bolt is tight for securing the clutch pedal and the brake pedal. Are there bushing anywhere else that could have worn out or any other ideas of what is causing the rattle? Thanks, Karl
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#2
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Do you have the clutch springs in place? There should be one that goes from the clutch fork to the frame or linkage that prevents rattles and another from the z-bar to the frame to keep the throwout bearing from spinning when your foot is off the pedal.
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#3
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Is the Z-Bar sloppy?
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey 1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles 2017 Sierra SLT 1500 Z71 4X4 2019 Canyon SLT Crew 4X4 |
#4
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I have the heavy spring from the clutch fork to the frame. When looking through the assembly manual, I never saw a second spring.
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#5
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Quote:
Appears to have no slop in it, seems pretty solid.
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#6
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Here's a couple pictures that may help. Check and make sure you have the rubber bumper in the pedal assembly for the clutch pedal arm.
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#7
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Thanks Bob, that is the spring I have and yes I have the rubber bumper installed. It sounds almost like keys rattling, and I grabbed my keys to make sure those weren't it.
I took my clutch safety switch out to inspect that and clean the contacts while I had it out. On mine the electrical plug was towards the inside, opposite of what yours is. Are you sure yours is positioned right? I was upside down in the car, so maybe I am mistaken. Karl
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#8
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I think it only fits one way and believe it matches the disassembly photos I took.
Check your email. Let me know if you need any other photos so I can button the '73 back up. |
#9
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Bob,
Yes I got them and you can button them back up. When I had my switch off on one side, the hole is chamfered and I thought that was to allow the switch to snap on easier. the piston goes on one way, but the body can spin on the piston. Thanks again Karl
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#10
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Doesn't the clutch pedal have bushings that can be replaced where it bolts under the dash?
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1979 Trans Am: Y84 WS6 400/4spd 1967 YS 400, 670 heads, Summit 2802 cam, long tubes, ST-10 trans. McLeod hydraulic clutch conversion. |
#11
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Clutch pedal feels pretty solid without any slop.
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#12
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no side to side slop at bottom of pedal?
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#13
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It does slide side to side a little bit, but the shaft is all greased up so no rattle from that.
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#14
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Noise could be a a loose screw on the bracket that supports the radio, I have had this as I think one end had a washer on it. Hold pedal and it stops due to some sort of vibration dampening by holding the pedal, like coins in the ash tray can do.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#15
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Good point, I will check under the dash. Very consistent with the clutch pedal though.
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1973 Formula 400 4 spd 04C build date Norwood assembly plant. |
#16
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Regular brake pedals for autos have twin nylon shaft sleeves, not familiar with manuals but would imagine something similar.
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#17
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Yup, 4 of them, Vs 2 for an automatic.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#18
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