Nickhead Posted August 2, 2010 Share Posted August 2, 2010 I just picked up a 93 si from a friend, and it hasn't been on the road in about 5 yrs. But all it needed was an oil change and some new gas, and the it ran perfectly fine for a car that old for almost a week. But the other day, coming off the highway in 5th at about 60 mph, I hit the clutch to downshift and heard a clunk come from under the hood and clutch went to floor and was stuck fully engaged. So I rolled to a stop\stall (couldn't get it out of 5th until engine was off), then popped the hood to check my lines and master cylinder, but everything seems fine. I bled it off and flushed the lines, and most of the fluid coming out was almost black, but couldn't find a leak. Once the lines were bled, the pedal got firmer but still spongy at best, and it doesn't have enough pressure to disengage it. So I guess my question would be, does anyone know if there is something else i should be checking? Or is there a way to test the master cylinder? I don't pull the tranny if there is an easy fix. Link to comment Share on other sites More sharing options...
SpeedDemon Posted August 2, 2010 Share Posted August 2, 2010 could have broken the pressure plate or a clutch spring Link to comment Share on other sites More sharing options...
Nickhead Posted August 2, 2010 Author Share Posted August 2, 2010 Do you think something like that could be related to the hydraulic system? And if it is the pressure plate, would it chatter when i start the car? I had a friend tell me his friend had a similar problem, and it turned out to be a bad master cylinder. Does anyone know a way to troubleshoot my master\slave cylinders to rule them out? Or could dirty lines be the problem? I'm used to cable clutches so i'm not sure what can cause a problem if the lines are not leaking. Any help is appreciated Link to comment Share on other sites More sharing options...
SpeedDemon Posted August 2, 2010 Share Posted August 2, 2010 if its a bad master you wouldnt have a lot of pedal pressure. this sounds like something mechanical. if your having chatter then its flywheel/clutch disc related. time to tear everything apart Link to comment Share on other sites More sharing options...
Nickhead Posted August 2, 2010 Author Share Posted August 2, 2010 No chatter, but I think im gonna tear into it and do the clutch anyways it was soft before so it wont hurt it. I was just hoping for a cheap fix cause it my daily driver Link to comment Share on other sites More sharing options...
DelSolSweetie Posted August 2, 2010 Share Posted August 2, 2010 you guys kind of forgot about the slave cylinder as well as the master cylinder normally if you blow one it doesnt keep a pedal at all but you never know i say replace clutch, master cylinder, and slave cylinder and replace all fluid clutch's in these cars tend to be soft BTW.. you can get an exedy stock replacement clutch and fidanza flywheel on ebay for a very good price.. multiple people run them on here.. mine just started a bit of chatter after a year and a half but it is a 7lb flywheel so w/e.. also you can pick up a stainless steel clutch line and it'll firm it up a bit check your brakes as well.. car sitting for 5 years might need some.. i'd flush the brake fluid as well Link to comment Share on other sites More sharing options...
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