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1990 928 GT problem #1- clutch pedal stuck to floor

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Old 06-19-2022, 01:01 PM
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gjpearce
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Default 1990 928 GT problem #1- clutch pedal stuck to floor

My garage queen 1990 with 105K miles in excellent condition. Car is rarely driven. So yesterday I took the wife to a fancy late lunch in a city 75 miles away. Car drove well.....started right up....engine strong and A/C fairly cold in 100 degree Florida weather.
Problem: We get back in car to drive home and I notice clutch pedal is stuck to floorboard. I had an issue years ago when my slave cylinder gave out so I was suspicious. I remembered there was no leak noted on my garage floor and nothing was leaking under the car right then. I tried pumping the brakes but pedal remained stuck to floor. I manually pulled up clutch pedal to uppermost position and it clicked in place. But when I pressed it in there was no resistance and pedal remained stuck to floor. I did this a few times. NOTHING. I remembered that when I parked the car I had pressed the clutch all the way to floor, moved shifter out of gear and let the car run a bit as we collected our belongings for a few minutes. Usually when I drive I only push the clutch about halfway before changing gears but I may have held it in max down position as I was parking. So realizing that I could not engage the gears- I needed reverse first to get out of the space, I started the AAA call in process anticipated a several hour wait...and then they would need to find a tilt bed truck to carry the car back 75 miles home. And then all of a sudden, IT WORKED. I drove home carefully on major roads, shifting rarely. Everything worked.
Any Ideas......the pedal is where it is supposed to be and resistance to pushing pedal in is normal. I am afraid to push the pedal to the floorboard.....could it stick again?
My clutch is fine...was done at about 90 K miles several years ago.
Also please note problem 2 which almost gave me a heart attack as I was driving home- the next post
Old 06-19-2022, 03:34 PM
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jschiller
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I had the exact same problem, pedal to the floor in traffic and stuck there (I think the pedal goes over center in the linkage and the spring will not return it).Had to have the car flat bedded home. No leaks anywhere so I guessed that fluid was escaping past the seal on the master or slave cylinder. My solution was to change them both. A real PITA for the master, of course. My suggestion is rebuild it in place if you don't need a new blue hose. Clutch slave is a breeze with GB's flexible hose.
Old 06-19-2022, 08:26 PM
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gjpearce
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I assume you did it yourself.. I am in Lake Placid and my mechanic is in Pinellas Park- about 90 miles away. Did you see the fluid actually leak? I am hoping I will be safe if I do not fully depress the clutch pedal. The car brought me safely home and it is in the garage.
Old 06-19-2022, 08:34 PM
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gjpearce
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What is GB, please?
Old 06-19-2022, 09:08 PM
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JBT3
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Originally Posted by gjpearce
What is GB, please?
Greg Brown - Precision Motorwerks
http://www.precisionmtrwerks.com

Last edited by JBT3; 06-19-2022 at 09:10 PM.
Old 06-19-2022, 10:23 PM
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jschiller
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Originally Posted by gjpearce
Did you see the fluid actually leak? I am hoping I will be safe if I do not fully depress the clutch pedal. The car brought me safely home and it is in the garage.
No, it never leaked a drop. In fact, the reservoir was still within a half inch of being full. That's why I think it was leaking past the seal in either the master or slave cylinder. I did the job myself with my son's help. Fortunately I have a MaxJax in the garage so I didn't have to do it lying down under the car.

If you do it yourself, get the Greg Brown hose, it will save a lot of grief in routing the hardline hose and bleeding the system.



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