Reply
 
Thread Tools Display Modes
  #1  
Old 06-11-2017, 09:03 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default 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

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #2  
Old 06-11-2017, 09:49 AM
tinindian68's Avatar
tinindian68 tinindian68 is offline
Senior Member
 
Join Date: Jan 2004
Location: Mountaintop, PA 18707
Posts: 219
Default

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.

  #3  
Old 06-11-2017, 09:59 AM
77 Canamman's Avatar
77 Canamman 77 Canamman is offline
Ultimate Warrior
 
Join Date: Aug 2006
Location: PA
Posts: 4,022
Default

Is the Z-Bar sloppy?

__________________
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  
Old 06-11-2017, 10:10 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

Quote:
Originally Posted by tinindian68 View Post
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.
I have the heavy spring from the clutch fork to the frame. When looking through the assembly manual, I never saw a second spring.

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #5  
Old 06-11-2017, 10:12 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

Quote:
Originally Posted by tinindian68 View Post
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.
I have the heavy spring from the clutch fork to the frame. When looking through the assembly manual, I never saw a second spring.

Quote:
Originally Posted by 77 Canamman View Post
Is the Z-Bar sloppy?
Appears to have no slop in it, seems pretty solid.

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #6  
Old 06-11-2017, 10:13 AM
Bentwheelbob's Avatar
Bentwheelbob Bentwheelbob is offline
Ultimate Warrior
 
Join Date: Mar 2012
Location: Charleston, WV
Posts: 2,502
Default

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.




  #7  
Old 06-11-2017, 10:19 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

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

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #8  
Old 06-11-2017, 10:23 AM
Bentwheelbob's Avatar
Bentwheelbob Bentwheelbob is offline
Ultimate Warrior
 
Join Date: Mar 2012
Location: Charleston, WV
Posts: 2,502
Default

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  
Old 06-11-2017, 10:27 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

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

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #10  
Old 06-11-2017, 10:52 AM
MDGOAT69's Avatar
MDGOAT69 MDGOAT69 is offline
Senior Member
 
Join Date: Dec 2016
Location: Brockton, Massachusetts
Posts: 154
Default

Doesn't the clutch pedal have bushings that can be replaced where it bolts under the dash?

__________________
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  
Old 06-11-2017, 11:45 AM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

Clutch pedal feels pretty solid without any slop.

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #12  
Old 06-11-2017, 12:29 PM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
Posts: 9,426
Default

Quote:
Originally Posted by Pepi View Post
Clutch pedal feels pretty solid without any slop.
no side to side slop at bottom of pedal?

__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
  #13  
Old 06-11-2017, 12:31 PM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

Quote:
Originally Posted by Formulabruce View Post
no side to side slop at bottom of pedal?
It does slide side to side a little bit, but the shaft is all greased up so no rattle from that.

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #14  
Old 06-11-2017, 12:46 PM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
Posts: 9,426
Default

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.

__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
  #15  
Old 06-11-2017, 01:44 PM
Pepi's Avatar
Pepi Pepi is offline
Ultimate Warrior
 
Join Date: Jan 2008
Location: Sussex, WI
Posts: 1,520
Default

Quote:
Originally Posted by Formulabruce View Post
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.
Good point, I will check under the dash. Very consistent with the clutch pedal though.

__________________
1973 Formula 400 4 spd 04C build date Norwood assembly plant.
  #16  
Old 06-11-2017, 07:40 PM
Aus78Formula Aus78Formula is offline
Suspended
 
Join Date: Aug 2006
Posts: 1,389
Default

Regular brake pedals for autos have twin nylon shaft sleeves, not familiar with manuals but would imagine something similar.

  #17  
Old 06-11-2017, 09:25 PM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
Posts: 9,426
Default

Quote:
Originally Posted by Aus78Formula View Post
Regular brake pedals for autos have twin nylon shaft sleeves, not familiar with manuals but would imagine something similar.
Yup, 4 of them, Vs 2 for an automatic.

__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
  #18  
Old 06-11-2017, 09:43 PM
Aus78Formula Aus78Formula is offline
Suspended
 
Join Date: Aug 2006
Posts: 1,389
Default

http://www.hotrod.com/articles/hppp-...-pedal-repair/

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:33 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017