So I replaced my slave cylinder and got the car running again but with the engine on she still won't go into gear. I've got a 2002 mcs and with the engine off I can cycle the gears but once she's started I can't get her into any gear. If I start her in first I can pull it out of first and put it in first with a lot of force and I can even cycle the rest of the gears with the same amount of force but only if I start her in first then pull it out of first

 

 

Yes and yes .sorry I seem to post alot on here. I also held the clutch down over night to see if it's help