Okay, I got a little 04 Civic LX A/T (yeah yeah, put a sock in it ). I got rear ended recently, and after getting it back from the shop, whenever I put any decent gas to it from the line, the shifting is all jacked up. It hesistates a little, then seems to have gear slippage or something before it hits 2nd. It doesn't happen when I gas it up gradually, though.

Any idea what this may be (and could it possibly be attributed to the accident)? I don't think the two are related but it's a weird coincidence...