When u put the sunfire in drive the engine shifts. is this cause the torque motor mount is bad

Better to not drive as it can stress the drive axles by the engine raising when torqued putting axles in a bind . If you do drive try not to take off any harder than necessary .

Bad O2 sensors affect the fuel/air mixture. Vibrations can be caused by many sources, hard to diagnose here. To test the motor mounts. apply the parking brake, open the hood. Put the car in drive and step on the brake with one foot while applying full throttle with the gas pedal. Watch for excessive engine lifting on one side. Be careful not to have the engine fan to contact the shroud. Now do the same in reverse. If the engine lifts excessively, your mounts are shot. If the engine stays put with only a slight movement from torque, then the mounts are good.

With car in drive/reverse and foot hard on brake if the engine moves when gas pedal is depressed and quickly released in both D&R, then that mount/mounts is defective...

Engine mount should be replaced if:

1) The hard rubber surface is covered with heat check cracks.

2) The rubber is separated from the metal plate of the engine mount.

3) The rubber is split through the center of the engine mount



The transmission case will crack or break if either engine mounts or transmission rear mount is broken...Here is a GM Service bulletin addressing the issue:

#02-07-30-024B



The transmission mount (see drawing) test:

>Raise and support the vehicle

>Raise the transmission/transaxle in order to remove the weight from the transmission/transaxle mount and create slight tension in the rubber.

Replace trans. mount if anyone of the three conditions listed above exist...saailer







I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

you probably have a bad motor mount. Look under the hood, passenger side of engine compartment cast iron mount with rubber insert. Is the rubber insert worn visually inspecting. If you cannot tell, have a friend start the car, emergency brake on, foot on brake, shift from park to drive, does the motor jump in the mount? shift from drive to reverse, does it jump again. If so bad mount, local auto repair store should carry. you will have to jack up the engine carefully not much and not directly on oil pan, you just have to relieve the weight on the mount to replace. several m10 bolts, 15mm socket to remove. retighten fasteners to 58+/- 9Nm of torque. good luck.

Indeed the engine mounts can cause this type of symptom, have a local shop check the engine for excessive lift up on gear engagement.

Get a friend to open the hood and look at the engine go up or down in the engine compartment when the brakes are firmly applied and switching between reverse and drive. Look for the motor mounts for behavior where tears exist in the rubber.

This is caused by a bad engine mount or something that came loose,put the car in drive hold the brake and give it gas, see if motor jumps up then do the same in reverse, if the motor jumps up a lot then the mounts are bad, hope this helps.

Not usually. when a mount is bad, you can FELL the car **** when accell of a stop or changing from Drive to reverse. To check it, put on your parking brake, now hold the brake pedal with your left foot, now put the car in reverse, and press the gas slightly, the engine will move slightly, now put it in drive, the engine should shift slightly, if it moves a LOT like a few inches or moves upward, you may have a mount bad and it needs to be inspected.

could be a bad motor mount or one that is loose. tranny mount could be bad also id try these two areas first.

Check your motor mounts, it sound like your motor is rocking back and forth. You can confirm this by watching the engine while someone shifts it in and out of gear for you.