Providing the hydraulics are working properly, and the proper amount of travel from the
slave cylinder to the cover assembly is good. That leads me to a problem in the cover assembly area. The release bearing while being pressed against the cover assembly
diaphragm or fingers isn't releasing pressure against the plate, as a result the clutch acts engaged even though pedal is depressed to disengage.
I have seen this problem often caused due to overheating...a common cause is "hot rodding" a clutch....a stock clutch can't stand up to the demands of "drag racing" type usage even though it was only "abused" a couple of times...
Perhaps clutch throw-out bearing?
you could've broke the clutch cable
Misadjusted or bad clutch safety switch? Usually located at the upper end of the clutch pedal
maybe the clutch
Clutch drag is when the clutch pedal is fully depressed and the clutch is still partially engaged. When the clutch pedal is released or in the up position the engine is connected to the transmission input shaft. When the pedal is depressed or in the down position the engine is disconnected completely from the transmission. When the clutch drags it is still partially attached to the engine. A dragging clutch can cause a glazed flywheel and premature failure of the clutch. It will also cause the syncros to work twice as hard to slow down or speed up a gear inside the transmission when shifting. Basically syncros will wear out faster than normal and may not work properly depending on how bad the clutch drag is.
It's worn out, bad linkage or worn shift levers.
Too much clutch pedal free play can lead to insufficient engagement of the clutch, resulting in difficulty shifting gears and potential damage to the transmission. It may also cause the clutch to slip, which can lead to increased wear and overheating. Additionally, excessive free play can affect the overall performance of the clutch system, leading to poor driving experience and potential safety issues.
If there were no operating clearance the clutch release bearing would constantly be in contact with the spring diaphragm causing wear on both the diaphragm and the bearing itself, also the bearing pushing on the diaphragm could cause the clutch friction plate to not be fully engaged and slip.
A worn out clutch release bearing would cause a whining sound when you put your foot on the clutch.
If you accelerate and the transmission shifts to a lower gear of the overdrive disengages the RPMs will increase. If the vehicle has a manual transmission a slipping clutch will cause the RPMs to increase if the clutch is defective.
Torque Converter Clutch Solenoid is a possibility.
A slipping clutch.