Sounds like you have broken the 'clutch return spring' in the transmission or if it's hydraulic you may be out of clutch fluid (leaking)
turn your car on and pump the peddel with your hand till u get pressure then get a new clutch and master cylinder for the clutch
the return spring on the clutch pedal assembly must be replaced.
broken clutch cable could also be a shot slave cylinder...this will cause the clutch pedal to not come back up.
You may need to adjust your clutch or replace your clutch.
In most cases they leak hydraulic oil out the back of the cylinder. Crawel up and under the drivers side clutch pedal area and look for fluid leaking inside where the clutch actuator rod enters the back of the clutch master cylinder. It should be dry.
To bleed the clutch: -With the bleeder valve closed, depress the clutch pedal to the floor. -Slip your foot off the pedal and let it fly back to the top (DON'T be gentle). -Repeat several times (5 is a good number) -Depress the pedal to the floor, hold it there, and have a helper open the bleeder valve on the slave cylinder. -Allow the fluid to run out. -When the fluid stops flowing from the valve, shut the valve and release the pedal. Repeat as needed. -Be sure to keep the reservoir full, a third person to watch the reservoir is a very good asset to have.
When you put in the new assembly, hold the pedal up straight so the cable doesn't unhook from the assembly. Then have some one in the back put the cable tight and screw the wing nut on until its tight then let go of the pedal their you have it. put the pedal in an out to make sure it tight if it feel back down then you didn't tighten it enough in the back.
Remove the cover on the clutch fluid resivior, making sure it is full of fluid. Open the bleeder valve and wait for the fluid to start dripping from the valve, then tighten the valve. This will get you going until you find someone to help you bleed it properly. Put the cover back on, after re-filling the fluid that just filled the new slave cylinder. If you have a helper, have them sit in the car and press the pedal all the way down to the floor 4 to 5 times. After the last pump, have them hold the pedal all the way down to the floor. Tighten the bleeder valve, and repeat the process a few times until the clutch has good pedal.
for my 2002 boxster (not a sport) there is an unmarked raising/lowering switch on the drivers side near the floor close to the clutch pedal. hope that helps.
It sounds as if the clevis connector for the clutch master cylinder may be incorrectly adjusted too far out. Removing the cotter retaining pin and the pin that attaches the clevis to the clutch pedal and turning the adjustment nut to shorten the clutch 'travel' should fix the problem. (or if you had a shop do the clutch replacement, bring it back to the shop and have them correctly adjust the clutch master cylinder travel) Hope this helps
slave cylinder
to bleed the clutch you have to pump the pedal several times and then hold it down to the floor and then open the bleeder you may have to do this several time before the pedal comes back Did you bleed the air out of the system after replacing it?