Wehn i go from park to reverse or any other gear my car seems to slam hard like i have been hit by another car. Im not sure what the problem is. There is a little more than what is needed in the transmission line ( i guess thats what its called) please help me with this. It doesnt do it when the car is cooled

 

What is the rpm showing? Is there a SES light on? Could be transmission or possibly a Universal joint that is bad but just from your description, sounds like something with tranny. Does the tranny fluid smell burnt?

 

^^^^ yep and do the idle rpms stay the same when cold and warm.

 

that or it could be a vacuum leak that has the RPMs way up in park and he shifts into gear and it jerks down

 

I know i need a new vaccum piece that is on top of the motor. THe rpm sit high sometimes as well and i have a very very small tranny fluid leak but the fluid isnt burnt inside the engine. there is also i piece underneath that i was told could be it. Some kind of cv joint i think it is located near the center above the drive train

 

get your self a dealer service manual for your model and yr and read it. u will learn alot about your car and the basics of the mechanics. the u joint for the drive shaft will vibrate but only when the car is moving.