When i depreesed the clutch my truck is moving

if the tail shaft spins , but dose not move points to broken axle, other wise transmission or clutch fault.

Check clutch fluid level in clutch master cylinder for proper level. You can also watch the slave cylinder move at the transmission where it pushes on the clutch fork. The slave cylinder should move when the clutch pedal is depressed. If the cylinder does not move, suspect a defective master cylinder/slave cylinder/air in system that will require bleeding. If all moves, suspect tranny removal for inspection

It's a manual transmission, then? If it is, your clutch is not working. You need to check at the transmission's bell housing to see if the clutch pedal being depressed causes the clutch fork to move-either forward or backward, it should move about an inch with the pedal pushed to the floor.. The clutch pedal will either be cable operated, or it will be a hydraulic clutch with a clutch master cylinder on the firewall, and a steel tube going down to the bell housing, where a small "slave cylinder" operates the clutch fork.

If you see the clutch fork move a fair amount, at least an inch, then you probably need a new clutch disc and pressure plate. A clutch job means removing the transmission to replace the clutch.

If the clutch fork does not move, either the cable has too much slack-for cable operated clutches, or the hydraulic unit has a problem-for hydraulic operated clutches. One of your hydraulic cylinders may be bad, either the clutch master cylinder or the slave cylinder.

MT trans. got it. (said clutch let up.. is the clue)
engine is running right? (sorry)
and you shift to all gears, and car does not move, RIGHT?

if the clutch slips and car will not move in ALL gears.
the clutch is bad, or if a cable clutch, never setting free play on cable is the cause,... done 100s.
or if hydraulic actuated clutch pedal (im too lazy to look)
then if it fails the car can only moved if you start engine in gear.
see?
please post all steps.
i get in car,
i start engine in neutral. (did you) or start in gear with clutch to floor.?
i then select all gears, and release clutch and car will not move.
like that.... and win. (i can diagnose any clutch, ive wrecked many racing, so.... see all horrors) and fixed them by self. all.

if you can only move car , starting engine in gear.?
that is bad clutch cable or actuator (slave or master cylinder)

is the clutch locked all times, or slips all the time.
see? only that need be said.
and 10 other symptoms. (chatters, noises, grabs, etc)

-Possibly time to replace new clutch.

Good luck


mai

The gear box should be okay. Check the clutch-watch if the clutch fork on the bell housing moves when someone presses the clutch. If it doesn't move, the cable needs adjusting, or if hydraulic clutch diagnose the clutch master and slave cylinders. Either one should cause the clutch fork to move and engage the clutch.

Not necessarily. Check that the clutch slave cylinder is not being held in the disengaged position by a blocked clutch master cylinder. Check this by opening the bleed nipple and if the clutch arm moves to engage the clutch then replace the clutch master cylinder as the compensating port is blocked.

''Throw out bearing'' has destroyed itself.... time to pull the transmission and replace it and the clutch and pressure plate, and turn the fly wheel smooth.

has the clutch ever been replaced? sounds also like it could be the clutch release bearing is bad, which then means just have a new clutch installed. that gives you another issue to look at, check the first ones first though. good luck

my daewoo lanos wont shift into gear/s while running even when clutch is depressed all the way