Was wonedrin if i had a bad motor mount or trans mount? had some one change trans but they didnt finish the job and had to put it back in by myself everything works but it jumps out of the upper gears now ? when accelerating and letting off the gas i can feel the motor moving and feel it in the shifter ? and there is a mount at the rear of the engine that im not sure is on right seems like there is another part suppose to be there ?

is it drivable-then get anothr mechanic w xperienc--there are good private shops out there--not happy tell him to put things back together--trans guys tend to b shady--ask if theyv done work in this line--getta a feel for honesty--library sec629 has auto manuals in detail

I would change all the mounts on any transaxle vehicle,
motor & transaxle

You have to put a block of wood or couple pieces of
plywood under the oil pan, so as not to dent it & raise the
motor & trans axle enough, to get out the mount your working on

To be honest, I doubt you have the tools or confidence to be
doing that job. You need your head about you & jack stands
floor jack & long pry bars you won't own

frist thing to do is vcheck the trans fluid level. you do this wh4en the car is running. If it is very low it can make the transsmision slip. That would eb the frist thing. next you should also get the code pulled for your car. I might guess and say it is a p0720 code. let me know if I am right and motor mounts are no bad. you will have to disconnect the wires that go to them they have brown connectors and a bunch of clips you will have to disconnect. after that you can take out the long bolt that goes throught the middle of the mount and then take the cross memeber down . you will need a jack to be able to do this job. once you get the crossmemeber down it will have the mounts still on them you chnage them and then put it back in reverse order.

It could be a bad motor/trans axle mount. Have an assistant start the engine and put the vehicle in drive and then reverse while you watch. If the motor moves more in one direction then the other, then that motor mount is probably bad.

Typically this a result of bad motor mounts, I had the same issue with my 92 honda accord, changing the side mounts and the strut up front resolved the issue. The Trans mount, behind the motor is the most difficult mount to change and requires you to unbolt the other mounts and roll the motor far enough forward to gain access to that mount, but once all 4 mounts are replaced your issue should be resolved

it sounds like you may have a bad transmission mount or motor mount. put a jack under the transmission and jack the trans up. Look at the trans mount and the motor mounts and see if the rubber is cracked or ripped.

To check it you need to use a pry bar and rock the motor around, as well as use a jack to raise the engine/trans assembly and see if the mount has too much play.

Goto any major parts store and buy the manual for the car its $15, or they usually will let ya look at it to see what ya need, but buying an older car i recomend buying the book, plus it will tell you exactly how to change the mounts, as well as many other repairs


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

If you don't have to be moving to get the vibration then it has to be either something is not balanced properly (torque converter may be bad, front pulley, engine flywheel cracked) or you have a bad mount, causing the vibration from making the engine or trans contact the car body in a place you can't see.
Hard to pinpoint without feeling it myself. I can say for sure it's not the cam belt, unless there's debris stuck to the inside of the cam gear causing the vibration.

bad or attasked transmision

no should be same engine. check your engine mounts and tranny mount. how bad a vibration? sometimes after installing engine the trans gets shifted around and if mount was worn it will allow it to hit crossmeber and vibrate.