Ok I've got a really annoying problem with my car, everytime I shift it into "D" or "R" from park I get a delay for about 2 seconds and then rear end clunks or shakes twice. Now my driveshaft is ok so I don't think it's that.

Any Ideas what could be wrong??

 

low oil pressure, stuck valve for the delay as for the noise i'd look at the u joints and the trans mount

 

Yeah, I was just fooling around few days ago and I noticed when I shift quickly into Reverse from "N", the car does not go backwards and gives off clunking noise like if something is stuck in diff or rear end.

I don't know maybe it could be transmission related