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Clutch pedal problems


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tnora
Novice

Jul 14, 2016, 11:28 PM

Post #1 of 3 (658 views)
Clutch pedal problems Sign In

Hello: I'm the original owner of a 1991 Mits Montero 5speed 4x4, 102,000 original miles. My clutch pedal goes all the way to the floor and stays there. I have to catch my foot under it and pull it back up to its starting position and then gently pump on it until I get pressure in the pedal and then I can change gears. This problem repeats itself during my drive uphill for 5 miles or more, like Sierra Nevada mountain driving, and I'm having to downshift and up shift to maintain speed while climbing. The problem seems to be in the pedal mechanism. I checked my clutch fluid and around the clutch cylinder and there are no signs of leakage. The fluid is always at the max level. The problem goes away when I'm back in the city in flatlands and the clutch pedal works great as if there was never a problem. Any suggestions?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 15, 2016, 3:47 AM

Post #2 of 3 (649 views)
Re: Clutch pedal problems Sign In

You have a problem with the hydraulic system for the clutch. It may have developed a leak which will have to be found and repaired or it may just be a bad clutch master cylinder. You will have to replace the faulty component and then bleed out the system.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 15, 2016, 4:27 AM

Post #3 of 3 (644 views)
Re: Clutch pedal problems Sign In

Interesting that it totally goes away while in "flatlands" as you put it. Was thinking and you may know the altitude change of that drive when it acts up. Bet if more than 5,000 ft. a bubble that would shrink in the lines/system expands and you lose all pressure.


Finding that back at lower altitude will be a trick and a half. Not so common but master/slave cylinders can allow air in and not leak out to be seen - wouldn't take much.


If you do that run frequently try bringing an empty 2 liter plastic bottle on the run up. Watch it expand doing nothing at all.


I've really done that type of thing and a bit shocked at the difference,


T







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