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Help - Clutch troubleshooting by jc8367
Started on: 11-10-2014 08:04 PM
Replies: 16 (241 views)
Last post by: jc8367 on 11-29-2014 03:42 PM
jc8367
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Report this Post11-10-2014 08:04 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
Go to start my car and my clutch pedal has no pressure. Once I start the car I'm unable to get the car in gear. I have fluid, any thoughts on the culprit? I don't see any leaks.
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Gall757
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Report this Post11-10-2014 08:08 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Can you give us a little history on your car? Did it work yesterday?
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newfiejeff
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Report this Post11-10-2014 08:08 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
Air in the line is the first thing that comes to mind. Does the slave cylinder move when the clutch is depressed?
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Patrick
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Report this Post11-10-2014 08:08 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

There are probably about 5000 posts about this very subject in the archives.

The clutch hydraulic system is capable of drawing in air without any evidence of fluid leaking out. It usually occurs at the slave cylinder with the original style single seal slave piston. Rodney sells a nice dual-seal slave that works fantastic... if this is your problem.
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Report this Post11-10-2014 08:15 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
Patrick that was how mine was having the trouble, got the Rodney cylinder and no issue since.
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Patrick
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Report this Post11-10-2014 08:39 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by newfiejeff:

Patrick that was how mine was having the trouble, got the Rodney cylinder and no issue since.


You don't know how much I wished that Rodney's dual-seal slave cylinder was available back in the mid 90's when I got my first Fiero.

Man oh man, I had a lot of trouble with my clutch hydraulic system back then... as did most everyone else!

I'll never forget This thread from year one of PFF.

 
quote
Originally posted by Patrick waaaaaaay back in 1999:

I'm "glad" to see that I'm not the only one who has clutch problems with their Fiero.

I have a question. Is it possible for air to be drawn into the system at the slave end without any evidence of fluid leaking from the slave cylinder? I continually have a problem with air in the system, but I've been reluctant to replace the slave because I haven't noticed any leakage of fluid. However, every couple of months when I can no longer disengage the clutch enough, out comes the bleeding kit.

I'm getting awfully tired of bleeding this damn thing though. We could probably start a new thread containing just the methods that everyone has individually developed to bleed the clutch hydraulics on the Fiero. My experience has taught me that it is NOT an easy skill to acquire.

[This message has been edited by Patrick (edited 11-10-2014).]

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jc8367
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Report this Post11-10-2014 09:29 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
Yes the clutch worked yesterday.

I haven't had a chance to check the slave when depressed, I'll give that a shot.

A Rodney dual clutch does sound nice. Could be an early Christmas for me, :-)
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Patrick
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Report this Post11-10-2014 09:36 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jc8367:

A Rodney dual clutch does sound nice.


As nice as it might sound... it's not a dual clutch.
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Gall757
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Report this Post11-10-2014 10:53 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jc8367:

Yes the clutch worked yesterday.


If the whole thing failed overnight, there may be something else going on.
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jc8367
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Report this Post11-16-2014 03:29 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thank for the reply's.

I did some more testing today. While the car is off I can shift through the gears fine but once the car is started I'm unable to shift into any gear, in either case there's no clutch pressure. Fluids are fine, don't see any leaks and the slaves moves freely when stepping on the clutch. Any thoughts?

Suggestions welcome.

[This message has been edited by jc8367 (edited 11-16-2014).]

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Gall757
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Report this Post11-16-2014 04:18 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
So in every case (engine off or engine on), can you push the clutch pedal and feel no resistance?
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Patrick
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Report this Post11-16-2014 04:20 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jc8367:

...the slaves moves freely when stepping on the clutch.


The slave needs to extend just over an inch when the pedal is depressed to fully disengage the clutch. How much travel do you observe?
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Report this Post11-16-2014 05:43 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Gall757:

So in every case (engine off or engine on), can you push the clutch pedal and feel no resistance?


That is correct
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Report this Post11-16-2014 08:53 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jc8367:


That is correct


If your slave cylinder is still moving about 1", your throw-out bearing is trashed.

If your slave cylinder is not moving, you have lots of air in the system.
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jc8367
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Report this Post11-25-2014 04:42 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
It was the slave cylinder, changed it and everything works but an odd thing happened during my test run. After about 5 minutes of driving the check engine light popped on for a few seconds and then turned off. Not sure of the relationship between the two but I'll keep an eye on it.
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fierofool
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Report this Post11-25-2014 05:41 PM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
They're not related. The clutch has nothing that feeds info to the ECM. Sounds like a code 32 EGR emissions system fault. Check to be sure you didn't loosen the vacuum line to the EGR valve while you were working in the engine bay.
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Report this Post11-29-2014 03:42 PM Click Here to See the Profile for jc8367Click Here to Email jc8367Send a Private Message to jc8367Edit/Delete MessageReply w/QuoteDirect Link to This Post
Turned out to be code 13, open oxygen sensor.
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