weak to no clutch pressure - Transmission Forum

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weak to no clutch pressure
Thursday, February 24, 2011 5:38 PM
I recently had a new transmission put in by a dealer in January. In the past 2 weeks, the clutch has slowly been loosing pressure. It still works, but i have to pump it a couple times before i start the car. today, i pumped it, started to drive, went to shift and no pressure.... pump,pump,pump, and i have pressure to shift...... i have no idea what it could be....

the reservoir is not leaking, i thought that was it first but it was dry, until i opened it.....

Any thoughts?????

Re: weak to no clutch pressure
Thursday, February 24, 2011 5:51 PM
sounds like the slave cylinder failing. id check and see what your warranty is on it... otherwise be looking at a new slave.



Re: weak to no clutch pressure
Thursday, February 24, 2011 6:18 PM
..... kk.... so if i have to replace the slave, might as well get the master.............



could it be anything else.............. that i could fix it using duct tape.... lol




but could it be anything else????
Re: weak to no clutch pressure
Thursday, February 24, 2011 6:32 PM
matt schramm wrote:..... kk.... so if i have to replace the slave, might as well get the master.............



could it be anything else.............. that i could fix it using duct tape.... lol




but could it be anything else????


could do slave only... but its in the trans.



Re: weak to no clutch pressure
Friday, February 25, 2011 7:27 AM
1; Master fluid level?
Are you loosing fluid? Yes? at slave? replace slave
No? Then it would be you Master that is defective and bleeding by.

2; What year? Izuzu or Getrag?

I find the Izuzu Masters tend to go bad after the system has been opened (new trans or clutch) then when you bleed it, the piston travels in a drier state hurting the seals.

Lately, I prepare customers for the possibility of having to replace master after a clutch/slave or trans replacement.



http://www.weatherallsautomotive.com http://www.planethax.com/j-body
Re: weak to no clutch pressure
Friday, February 25, 2011 8:43 AM
Car is a 1998 cavalier z24..... So no getrag....

As for fluid levels. Added fluid last weekend and is still good.


Would extreme temperature change cause it.... I live in iowa and last week it was 65. Two days later, 12
Re: weak to no clutch pressure
Friday, February 25, 2011 9:31 AM
If you have no pressure, no leak, and fluid is full then I would suggest it is the master that is gone.

You can attempt to bleed it, but I do not think you will get any fluid or even air out of the system.



http://www.weatherallsautomotive.com http://www.planethax.com/j-body
Re: weak to no clutch pressure
Friday, February 25, 2011 10:18 AM
well i will check for air tonight, called my mechanic and thats what he suggested. he says that the slave appeared to be fine (as well as the master).....


also, link to a How To to bleed a clutch system.....

please and thank you.
Re: weak to no clutch pressure
Friday, February 25, 2011 2:54 PM
never mind that post..... could someone get me a pic of where that bleeder screw is...... i cant find it for ****........... got me and a buddy to do it tomorrow and i just need to know where it is.........




answer question then make fun of me......
Re: weak to no clutch pressure
Friday, February 25, 2011 11:04 PM
come on guys........ just need one pic.............. please......... or diagram......
Re: weak to no clutch pressure
Monday, February 28, 2011 11:45 AM
Its right at transmission, where line enters



http://www.weatherallsautomotive.com http://www.planethax.com/j-body

Re: weak to no clutch pressure
Monday, February 28, 2011 3:00 PM
found it.... bled them and now i have a solid clutch..... dont even have to go half way to have have the clutch engage.....
Re: weak to no clutch pressure
Thursday, March 03, 2011 12:25 AM
Have seen that happen before when the master was bad. Bleeding the clutch worked for a while, but then it started to lose pressure again. Hopefully it's because they didn't bleed the clutch when re-assembling, but it's something to keep an eye on.





i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum. - Jon Mick
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