clutch pedal problem

hey guys you all have helped me out alot in the past and i need help again when im driving down the highway for awhile my clutch pedal looses pressure the when i pump it it goes back to full pressure when i drive stop light to stop light its full pressure sometimes in the mornings it has no pressure then pumping it make it come back when this first started i replaced clutch master cylinder but still same problem so im going to replae slave cylinder even though it is only about 7 months old you guys have any ideals i dont think its has air in line cus when pressur comes back after pumping it is full thanks for your time again

Have you looked at the fluid to see if it's leaking? I would think if it's not leaking your slave cylinder should be ok, but I could be wrong.

i think you do have air in your lines cuz it acts like it does. Go ahead and bleed the clutch and use dot 3 brake fluid and you should be good and your gunna need two or three ppl. one for pushin in the clutch, one for puttin in fluid and one to control the clutch bleeder screw.

3 people? I bled my clutch by myself. That sounds like a government clutch bleed job. lol

lol it makes it a hell of a lot easyer lol

Make sure there's fluid in the reservoir, open up the bleed valve, pump the pedal a few times til fluid is coming out, close the valve, pump the pedal to get pressure back, top off the reservoir, and put the cap on. It gets ya more than enough pressure to get you around. Especially if you get stuck on the way to or from work cuz your slave cylinder went out and you don't have 2 passengers with you.

was gonna say, most slave's are self bleeders... both of my truck have a slow leak... i'm too lazy to tear into it, and it's such a slow leak that i only have to top up once a month or so... lol