My car was in the shop and when it came out the clutch is acting really wierd. It is not slipping! Sometimes it wont go in 1st or R until i let off the clutch until it catches. And now sometimes it will complete miss 3rd and its acting kinda "spongy". If someone could please put some input on this.

 

I don't think it's completely disengaging...it might need to be bled

 

the car was in the shop for new pistons and reason my clutch should be acting different?

 

careless work done by the shop?

 

Ya , whats up with all these, " i just got my car back from a shop, whats wrong with it", Did we work on your damn car, NO!!! take that **** back.
And yes try to bleed it first since you said it feels spongy.

 

Could be the master or slave cylider dying on you, but i would have it them bleed it again first, if they put new pistons in the car i would have went ahead and had the clutch replaced to while they had it out, but thats just me.