could be a number of things cracked distributer cap, bad sparkplugs bad plug leads,setting, or bad igntion condensor if automatic transmission,it could be automatic idle adjustment on engine
check the exhaust system
Try engine mounts. That could be the cause. If in gear and auto may be the torque converter.
No
You could have ignition problems if it is the engine causing the jerk.
If shaking ihappens as you pick up speed could be worn U joints, loose or broken motor mounts for starters. If at idle could also be and engine issue due to timing problem, emission control issue, burned valve or ignition problem causing misfire or dead cylinder.
Low RPM. Gear is too high for travel speed
There are several possibilities:Low fuel pressure would cause the engine to run poorly, the way you describe.Old, worn sparkplugs could contribute to poor engine performance.Faulty plug wires are also a potential problem.Dirty, fouled or plugged injectors are often responsible for poor engine performance.Check the compression, low compression can result in difficult starting and poor engine performance.Run an engine diagnostic scan; if the computer has not detected a misfire, you're probably having a fuel related failure.
You probably have a misfire, but it doesn't show up if the engine isn't under load. When you put it in gear the load causes the misfire to show up and you can feel it. Run a computer diagnostic test and a compression test. You can borrow, rent or buy a computer diagnostic scanner for your vehicle at most auto parts retailers; often they'll even show you how to use it if they have the time.
It could be that the torque convertor is locked and not slipping which it should do as the normal operation
run gear oil in your engine if your cheap cause a 20r engine remanufactured cost 600 dollars. or you could completey take the motor apart and replace the rings.
No, you should not use gear oil in an engine. Gear oil is specifically designed for transmissions, differentials, and gear systems, whereas engine oil is formulated to lubricate and protect the internal components of an engine. Using gear oil in an engine can cause improper lubrication, overheating, and potential engine damage. Always use the recommended engine oil specified by the manufacturer for optimal performance. For high-quality lubricants, check out Fubex Lubricants.
You might have a problem with the torque converter or the lock-up relay.if it misses that could cause it to die. if it has a carburetor the idleing speed could be set to low