amputist

this happend a while back not to long after i got the car but went away after a little bit. but now its back and bothering me.

cruising at 45mph at 2 grand its fine, but as soon as i let off the gas it'll chug a couple times then continue to decelerate and drop rpm like normal. it doesnt do this constantly and only when she's been warmed up and driven for a while.

any ideas?