Zf6 Clutch Sticking to floor - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-24-2013, 05:22 AM
Member
 

Join Date: Feb 2013
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Zf6 Clutch Sticking to floor

Did some looking around found people with same issue but can not seem to find a fix.

I have an 06 6.0 ccsb zf6, when I romp on it or go high speeds (90-100)sometimes the clutch pedal sticks to the floor so far it has been still engaging the clutch like just the pedal is stuck ( I donít notice it until the next shift)

This morning on the way to work I got on it pretty good on the highway speeds up to 105 and when exiting went to downshift and my pedal was hard as a rock, it stuck to the floor and clutch would not engage. I pulled the pedal up and pushed it back down 3 or 4 times before it started working normal again.

How can I fix this issue? Clutch is fine never slips will die in 1st gear if you donít give it a little throttle. Only time I ever have issues is stomping on it and or high speeds 90-100.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 06-24-2013, 02:53 PM
Member
 

Join Date: Feb 2013
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
okay did some testing on the way home. when shifting at higher RPM's clutch sticks to floor. when reaching speeds faster than 93 clutch gets rock hard.
Reply With Quote Quick reply to this message
  #3  
Old 06-25-2013, 12:07 PM
Member
 

Join Date: Feb 2013
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Anyone else drive a manual?
Reply With Quote Quick reply to this message
  #4  
Old 06-25-2013, 12:18 PM
Powerstroke.org Fanatic
 

Join Date: Apr 2011
Posts: 102
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Drive a manual, no help with the problem though. Here's a bump for ya.
Reply With Quote Quick reply to this message
  #5  
Old 06-25-2013, 12:51 PM
Real Men of Genius
 

Join Date: Apr 2010
Posts: 5,127
Thanks: 1
Thanked 17 Times in 16 Posts
Feedback Score: 8 reviews
I've got the same problems - however mine sometimes sticks to the floor around 50mph.... I rarely go 80+

I'm working on a resolution with my trusty mechanic, Michael (username sargar) - maybe he'll bump in here and give some suggestions.
Reply With Quote Quick reply to this message
  #6  
Old 06-25-2013, 01:03 PM
Compression Ignition Addict
 

Join Date: Aug 2012
Posts: 632
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Mine did it a few times but I replaced the clutch and hydraulics all at the same time hasn't done it since not much help for ya free bump. Does your clutch master cylinder fluid look cloudy maybe a seal in the master or slave?


Sent from AutoGuide.com App
Reply With Quote Quick reply to this message
  #7  
Old 06-26-2013, 08:02 PM
Member
 

Join Date: Feb 2013
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Ok spent all night on some dirtymax sites as they also use the zf6 and apparently they made alot of manual trucks as there were alot of people with this same issue. Still unable to come up with a 100% diagnosis but seem more often than not it's caused by stock clutch slipping.

Which in my case makes sense (here's to that bitter sweet moment when you take your truck out for the first time after dumping lots of time money in it to haul a$$ only to find your clutch can't hold the power).

If fluid level is good and master and slave arnt visibly leaking it's your clutch. For those that are primarily getting the hard pedal this could be caused by fluid boiling try changing the fluid. heard to use dot 5 brake fluid. I'm going to change my fluid to see if it helps at all as I dumped every last dime in the engine and won't be able to aford a clutch for a bit.

Luckily it doesn't do it with stock tune but stock is ssssoooooo slooowwwww now
Reply With Quote Quick reply to this message
  #8  
Old 06-27-2013, 04:29 AM
Real Men of Genius
 

Join Date: Apr 2010
Posts: 5,127
Thanks: 1
Thanked 17 Times in 16 Posts
Feedback Score: 8 reviews
Very cool, thanks for the info! You also managed to put to rest a suspicion I had about the Duramax guys also using the ZF6. I read somewhere on another forum that one of them had the ZF6 tranny in it - and I thought, "Surely that's a different manufacturer or a transmission swap... or something" Glad to know that I wasn't losing my mind!
Reply With Quote Quick reply to this message
  #9  
Old 06-27-2013, 04:45 AM
Member
 

Join Date: Feb 2013
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
yeah I thought it was weird I didn't know they were the same until my snap-on dealer told me. ( he just swapped one into his Bronco)what's even more weird is the Corvette has a zf6.
Reply With Quote Quick reply to this message
  #10  
Old 06-28-2013, 05:09 AM
Compression Ignition Addict
 

Join Date: Aug 2012
Posts: 632
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
The durmax zf6 is similar as far as gears go but mounting and design of slave cylinder is completely different it's all internal mounted on the input shaft it's self not like ours where it's all external mounted. They also use the same transfer case I believe


Sent from AutoGuide.com App
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 09:39 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors