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Re: what is the cure for clutch not disengaging 1990 saab...
I don't know Saab specifically, however I assume there is a hydraulic portion to the clutch system, it might need a flush. Sounds like it's not responding to the pedal as you lift your foot, and that makes me think that there is pressure remaining in the system. That pressure might be keeping the pressure plate from properly engaging. If that is the case, than worst case is to replace parts in the system if they can't be cleaned out. Best case is you just pay for a system flush.
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What do you mean when you say you fixed the cable. It sounds like the cable broke and you replaced it. Is that correct. If so, did you adjust the free play in the clutch pedal to the manufacturers specification. If you have not done this correctly the clutch will either not disengage, or no engage properly. From your description it appears as though there is n free play and hence the clutch is staying disengaged even when you release the clutch pedal. If this is the case, then try lengthening the cable until the clutch pedal moves with say 25 mm of free movement before anything happens, and try again.
A clutch pedal normally does go all the way to the floor. If you can shift gear without a crunch, it is disengaging OK.
The loss of power could mean the clutch plate is worn and is slipping when engaged. There is a crude test for this. Start the engine and idle it. Apply the footbrake firmly, depress the clutch and put the gearbox in 3rd. Let the clutch out slowly. If the engine does not immediately stall, the clutch needs replacing.
If you're lucky, a linkage has become disengaged. Trace from the gearshift to the transmission.
What happens to the gearshift lever when you try to shift?
If it won't move and the linkage is not disconnected, try to manually move the shift levers where they enter the trans.
Also if you have a custom shifter it is possible that a pin has slipped.
Have fun chasing this one.
It jump because the clutch disc itself is good, but the clutch is not engaging-the pedal is not making the clutch engage. When it does, then you can shift without grinding, then you can shift period. Clutch pedal operates a cable or it operates a hydraulic system-they both, which ever one you have, move the clutch fork on the transmission bell housing just a bit to cause the clutch to disengage the transmission from the engine's flywheel...so you can shift, see, easy, smooth shifts, no problem, no grinding. Your clutch itself is okay, the pedal is just not operating it.
The clutch is operated hydraulically, and there is no adjustment. If your problem is that the clutch will not disengage or is hard to disengage you may be low on fluid or have air in the line. There may be a leak either at the master cylinder or the clutch slave cylinder. Bleeding the slave cylinder may restore pedal pressure. If the problem is that the clutch engages high on the pedal the problem is likely a worn clutch disc.
If a clutch is not engaging, you do not have a fluid problem. The clutch mechanism is only used to DISENGAGE the clutch. If the clutch does not engage, you probably have a worn or damaged clutch plate. If that's the case, either the engine or transmission must be removed so that the clutch can be replaced.
Check the fluid level in the clutch master cylinder What you describe is that you cannot disengage the clutch when you step on the pedal. This occurs if you are low on fluid or the clutch release bearing has collapsed. If the bearing is bad, it should have made noises before this. Let me know. I will check back. Moe
It's possible that your clutch needs bled and/or have the fluid level checked in the clutch reservoir. The only other thing I can think of that would cause the problem that you're explaining would be that perhaps your throw-out bearing is starting to slip or maybe your pedal isn't auto-adjusting properly. Not too much more that could be causing the problem you described. Hope this helps and have a great day!