1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

clutch pedal sticking while driving

Thread Tools
 
Search this Thread
 
  #1  
Old 03-11-2014, 03:26 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
clutch pedal sticking while driving

when im driving and reach for the pedal to shift sometimes it just falls and i gotta pull it up, kinda like i gotta pump it to get clutch power. if you know what i mean. i tried looking it up but couldnt find anything bu im also driving. i need to make it home and need truck in the Morning. please help me so if i need parts i can do.this fast.
 
  #2  
Old 03-11-2014, 03:53 PM
nlemerise's Avatar
nlemerise
nlemerise is offline
Logistics Pro
Join Date: Jun 2005
Location: AZ
Posts: 4,243
Likes: 0
Received 9 Likes on 7 Posts
Sure sounds like a faulty clutch master or slave cylinder failing. It does sound like a failing hydraulic system for the clutch...Have you checked the fluid level for your clutch system?
 
  #3  
Old 03-11-2014, 04:07 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
I just made it home, I checked the little black bottle/reservoir that is mounted under the hood up by the brake fluid reservoir and it does have some fluid in it, its not empty but its not full.

Where is the slave cylinder located and can i visually check it for faults?
 
  #4  
Old 03-11-2014, 04:15 PM
nlemerise's Avatar
nlemerise
nlemerise is offline
Logistics Pro
Join Date: Jun 2005
Location: AZ
Posts: 4,243
Likes: 0
Received 9 Likes on 7 Posts
Originally Posted by Diesel 724
I just made it home, I checked the little black bottle/reservoir that is mounted under the hood up by the brake fluid reservoir and it does have some fluid in it, its not empty but its not full.

Where is the slave cylinder located and can i visually check it for faults?
I don't own a stick, so I will give you a general location. If you follow the hydraulic line from the reservoir to the clutch master cylinder downward towards the bell-housing you should find a small cylinder there that connects to the clutch fork. It will probably have a bleed valve. I would get someone to help and bleed off the old fluid and refill with clean fluid. You should find somewhere along the line that is wet from leaking if this is the problem.
 
  #5  
Old 03-11-2014, 04:57 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
That reservoir line is really long, it comes out and loops around then goes into the firewall kinda high up on the right hand side. Its possible im not looking at the right things. I need my truck for business tomorrow and im screwed if i cant get it figured out and running by then,
 
  #6  
Old 03-11-2014, 05:22 PM
nlemerise's Avatar
nlemerise
nlemerise is offline
Logistics Pro
Join Date: Jun 2005
Location: AZ
Posts: 4,243
Likes: 0
Received 9 Likes on 7 Posts
Originally Posted by Diesel 724
That reservoir line is really long, it comes out and loops around then goes into the firewall kinda high up on the right hand side. Its possible im not looking at the right things. I need my truck for business tomorrow and im screwed if i cant get it figured out and running by then,
As I said, I don't have a stick so I can't give you specific help. I would guess the reservoir is on the firewall, correct? Then it flows to the master cylinder which must be connected to your clutch pedal. Then from that cylinder (master) it flows to the bell housing where the slave cylinder is.

I found this in another thread: When the pedal got stuck on the floor, either the rod came completely out of the master, or the slave failed.

Some have had luck for a short time just replacing the clip and putting things back together. If it was just the rod coming out of the master, then a new master should fix you up. Not all masters come with a new rod, so look and determine if the rod and plastic bushing are in good shape before you buy.

If the rod is still in the master and the pedal is on the floor, it may be the slave. If you've got a broken clip on the master and a bad slave, I'd suggest you throw in the towel and just buy a pre-bled master/slave set up.


So from this thread I get that a rod must connect the pedal to the master cylinder...
 
  #7  
Old 03-11-2014, 05:33 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
I am very very confused because i dont know what is what to be honest, this is my first time encountering problems of this type. Im a learn as i go kinda guy.
 
  #8  
Old 03-11-2014, 05:38 PM
nlemerise's Avatar
nlemerise
nlemerise is offline
Logistics Pro
Join Date: Jun 2005
Location: AZ
Posts: 4,243
Likes: 0
Received 9 Likes on 7 Posts
Originally Posted by Diesel 724
I am very very confused because i dont know what is what to be honest, this is my first time encountering problems of this type. Im a learn as i go kinda guy.
 
  #9  
Old 03-11-2014, 06:18 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
I have seen that before, I went to the dealership and went and ordered tons of those clips. But that does make me think i followed the line to right thing at least at first. I did go ahead and top off my DOT3 fluid in the reservoir.
 
  #10  
Old 03-11-2014, 06:56 PM
nlemerise's Avatar
nlemerise
nlemerise is offline
Logistics Pro
Join Date: Jun 2005
Location: AZ
Posts: 4,243
Likes: 0
Received 9 Likes on 7 Posts
Can you get under the truck and look at where the slave cylinder is mounted and see if it is leaking? I'd have someone pump the pedal and see if the slave is working.
 
  #11  
Old 03-11-2014, 07:23 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
Im not even sure of its location. Does any one have a picture or something? Im thinking thats whats wrong after all ive been reading. Im just so confused at the moment.
 
  #12  
Old 03-11-2014, 10:07 PM
retiredsparky's Avatar
retiredsparky
retiredsparky is offline
Elder User
Join Date: Sep 2011
Location: Vancouver
Posts: 979
Received 4 Likes on 4 Posts
If you look on the firewall up behind the dash you will see the clutch pedal and connecting linkage to the clutch master cylinder. The hydraulic system or the lousy plastic clip is the most likely cause of your problem.The master cylinder has a rubber seal around the piston which makes the pedal work. If the rubber has deteriorated or if the metal cylinder has corroded inside, fluid leaks past the piston. Have you seen any fluid leaking into the truck onto the floor by your clutch pedal?
It is also possible that a worn out pressure plate or throwout bearing that is hanging up because of a problem with the pressure plate is also a possibility. The pressure plate has a spring action which forces the hydraulic fluid back up the hose and pushes the pedal back towards you when you release the pedal. This clutch system works just like the old drum type brakes. You push the brake pedal, it pushes on a master cylinder which sends fluid to a slave cylinder. When you release the pedal, the springs on the brake shoes pull back to the original position and push the brake pedal back hydraulically. Same type of operation for a hydraulic clutch setup. Sorry for all the words! Larry
 
  #13  
Old 03-11-2014, 10:25 PM
timmyboy76's Avatar
timmyboy76
timmyboy76 is offline
Lead Driver
Join Date: Sep 2010
Posts: 7,793
Received 48 Likes on 36 Posts
724, i may be able to help, since ive experienced every possible scenerio with the m/s assy. !st thing is, if you got about 50k miles on the assy you have now, go to ANY parts store and get a new/pre-bled assy. Its worth the insurance bud, to throw a new one in, every 50k. The new assy will come with a "birdcage" plastic clip, so no need to order one of them.

Both the master assy (at firewall) and slave assy (protruding from bell housing) will fall out of their respective spots with a 1/4 turn...(counterclockwise). hen installing the master, install it first without the rod assy in it. Gives you more room to manuever. Once in place, theres "fingers" inside the unit that will "grab" the rod, and locks' it in place. As for the slave, DO NOT cut the "tabs" from the black cap. Leave entire assy alone, and lock it in place, to the bell housing. Prior to installing th slave, get a tape measure and measure from outer bell housing to the clutch fork..(inside housing, so stick tape inside until it hits the fork). It should be around 2-3/4in gap. If more, your fork is bent and the trans will need to be removed.

With everything removed prior to installing the new m/s assy, inspect the metal "nipple" off the clutch pedal, where the master rod connects to via the "birdcage". Make sure the factory weld hasnt gave way..(ask me how i know)....If alls good with metal nipple and clutch fork, roceed to install the new pre-bled unit...
 
  #14  
Old 03-14-2014, 02:45 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
Well i bought my truck with 109,xxx and it now has 181,xxx and ive never came across this problem, so who knows if its ever been changed out before, as far as i know the whole clutch unit is stock, because everything else was on this truck when i purchased it a goof 5-6 years ago.

After this problem first started i just added DOT3 fluid to the reservoir and the problem subsided until today. So today i went to add more fluid, and there wasn't room for any. So im super confused.
 
  #15  
Old 03-14-2014, 03:38 PM
Diesel 724's Avatar
Diesel 724
Diesel 724 is offline
Elder User
Thread Starter
Join Date: Oct 2010
Location: Western PA
Posts: 701
Likes: 0
Received 1 Like on 1 Post
I checked under my pedals for fluid coming out and where i have circled there were a few drops of fluid. I called Advance Auto and AutoZone and neither of them have what i want, a prebled full assembly, Advance says they list 7 things but can only get one, and AutoZone says they have a picture for it but cant get it.

 


Quick Reply: clutch pedal sticking while driving



All times are GMT -5. The time now is 12:15 AM.