2005 pontiac sunfire 2.2 ecotec. when i put in drive i hear a loud bang and when driving has a quieter bang when shifts gears the motor mounts don't move much what could it be?

putting it into a gear and hearing a knock indicates that the engine mounts or transmission mounts are broken
naturally if you put it in neutral it will not move as that what neutral is
perhaps the neutral position needs adjusting as it may still be in drive
have the fault codes read to determine any sensor/servo/solenoid faults before spending big money on a transmission

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

something in the exhaust is coming apart

Check to see if one of the motor mounts have failed.

timing maqrks engine 2.2 ecotec pontiac sunfire 2004

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

ooooo, sounds like internal transmission failure, most likely the sunshell is stripped out.

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.

check tranny fluid if its ok,tranny need rebuilt.sorry.

There are several engines that will fit the 2.2l Ecotec, 2.4L high out put motor, and I have actually seen a chevy cavalier that has a 3800 V6 in it if you want to go all out but in most cases sticking with the ecotec motor or the 2.4 High Out Put motor would be best they are two of the best motors for these cars and since the Sunfire is basically the same car as the cavalier almost any thing motor wise is inner change able between cars depending on the motors i own an 2004 chevy cavalier LS sport and a buddy of myn has a 2004 Pontiac Sunfire and both have the 2.2L Ecotec and are both Manual trans and even most of the interior parts are the same except for some of the dash board components hope this helps you out