It's difficult to get a feel for what you mean when you say your engine shakes. Do you mean a regular shake? If that's the case it might be a bad valve, sparkplug, plug wire or injector. If you mean that the engine moves quite a distance when you put it in reverse, but then comes back, it could be a motor mount. Please feel free to send an e-mail directly if you want to discuss the situation further.
possible problems: broken engine mounts cause the engine to jerk, or tranmission fluid needs change, and possibly bad transmission.
There can be several things that will an automatic transmission not to work properly. The most common cause is a lack of transmission fluid. Broken shifting linkage can also cause the problem.
could be either transmission shift linkage not engaging reverse ( stops at neutral ) worn joint connectors sometimes cause this. or reverse clutches or gears bad inside transmission.
My daughters 1997 Saturn SC2 coupe automatic transmission has no reverse? what would cause this?? and how can i fix it without replacing the transmission.
i would make sure that the engine is idling at the right rpm cause to fast of rpm can cause that for sure
Bad fuel pump will cause the engine to stall or not start at all. A bad automatic transmission will cause the vehicle to jerk and not run smoothly.
clutch plates could be welded to gather
There can be several things that will cause your transmission not go into reverse. The most common cause is the gear in the transmission is worn.
Problem with the transmission. You need to have the transmission computer checked for codes to know a possible cause.
If this is an automatic transmission, more than likely the transmission is on it's way to the junkyard. Usually failing transmissions lose reverse first, then the higher forward gears - last will be the lowest forward gears.
It is possible to thin the engine oil far enough that it loses it's lubricating ability and could cause irrepairable harm to the engine. Engine oil lubricates. Transmission oil is designed to run through a pump as it lubricates. An automatic transmission is a pump. Totally different from the oil pump found in an engine.
check the shift linkages for adjustment.there is also an actuator switch on side of transmission will prevent this. if those 2 checks dont fix the problem, your transmission is shot