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Car Forum / Jeep / May 2008clutch peddle
This past weekend i had my Jeep blessed at the blessing of the Jeeps here in Mi. A little over an hour into my trip i watched my clutch peddle go to the floor. I was on the highway doing 65/70 the whole time. I down shifted a few times for some hills . I stoped to check the fluid in the master cylinder and it was fine. I pumped the peddle a few times and it built pressure back up and was fine . It did the same thing on the way home also. Since i've gotten home and drove around town it is fine. Not sure what would make it do that? Any ideas? Sorry for so much typeing. It's an 87 YJ with the 2.5 Later Mike The master cylinder can be bad and not leak any fluid. Earle > This past weekend i had my Jeep blessed at the blessing of the Jeeps > here in Mi. [quoted text clipped - 8 lines] > > Later Mike > The master cylinder can be bad and not leak any fluid. > [quoted text clipped - 12 lines] >> >> Later Mike I agree with Earle, it may have bypassed internally due to the piston cups being lined up "just right", I'd look into a replacement. You may have received your one and only warning before it fails. Spdloader Well then i'll go to the parts store and pick on up. Thanks for the help. Later Mike It's strange it only did it on the highway. I drive it every day to work but thats back roads and 12 miles one way. It would not hurt to replace the master cylinder . I'll try it . Thanks Later Mike > It's strange it only did it on the highway. I drive it every day to work > but thats back roads and 12 miles one way. It would not hurt to replace > the master cylinder . I'll try it . Thanks The master cylinder is a simplified version of the brake master - it does not hold any residual pressure when released. It has a simple one-way valve - usually just a rubber flapper thing that lets fluid flow into the chamber until you step on the pedal and get pressure on it to close. The crud that forms over time will cause those to leak like what you report then clear themselves after a few pumps. You may get by for a while just by changing the fluid and cleaning the one you have, but that black goo comes from deteriorating rubber so it's likely on it's way out anyway (or you have a hose getting old).  SignatureWill Honea ** Posted from http://www.teranews.com **
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