Hard jerking in reverse and drive

replace failed engine mounts

jerks when?

moving the shift lever. with hand?

moving car. in gear,name the gear, drive, L or reverse?

jerks from, 1 to 2nd gear, 2nd to 3? or ? (or when IT down shifts)

pretend we are blind (we are) and cant drive car,(hopeless) and

tell us exactly what works and dont work driving.

hot /cold engine, fast /slow/ accelerating/ decelerating, up hills and what gears.



if engine is hot, is your idle at 800 RPM parked, in park.

y/s

if not the idle controls are out of control and when you shift to drive

IT will jerk. this is an engine problem.

there are lots of other symptoms.

The transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. When the TCM detects a malfunction with the control, a signal is send to the Engine Control Module (ECM) to trigger the Engine Light or Service Engine Soon light. The ECM stores the P0700 code and it means the TCM detected a malfunction with the transaxle controls.
Read more: http://engine-codes.com/p0700_dodge.html#ixzz3Pn5lTBcI

Since you\'re old school I would think you\'ve already checked the normal stuff like the fluid level in the transmission. If this is good, has the transmission ever been serviced? I\'m not familiar with your vehicle so if it has a filter it could be that is partially clogged, Does the fluid have a strong smell to it? Does is feel absolutely smooth or can you feel or see little flecks of something in it. You may solve this by dropping the pan and replacing the filter. But if that is the problem it will only be temporary as if there is debris in the pan you are ready for a rebuild.The sooner you do it, the better before you have hard part damage. Another possibility is a bad solenoid in the tramsission that isn\'t sensing the pressure until it is high enough to jerk when it kicks into gear. Again to even check this though you need a transmission guy to pull it and look it over. Sorry guy.

You can check the fluid level of a transmission only while the motor is running while in park or neutral (wheels blocked). Remove the rear dip stick (transmission) and wipe it with a rag, reinsert it completely. Repeat the procedure and note the level, which should be between or in the hash marks (towards the end of dip stick) and add accordingly.
If the level is okay you will have to check with transmission shops and the Ford dealer for quotes ( and check on Google ). The problem you have is either a transmission or computer problem.

Cars not control choke themselves electronically, this is likely the car trying to warm itself up quickly. The jerking will occurs anytime you shift into gear at an RPM over a low idle as the torque converter is being engaged. If the high idle last more than a couple of minutes then you might have an issue.

A delay of more than a second in shifting from the neutral to drive or reverse gear, could mean that there is a problem with the transmission. If on changing from a neutral or park position to the drive or reverse gear, the car does not immediately catch the gear and move forward or backward, then it could mean a problem in the transmission. If you change gears, and you hear a sudden clunk or sudden jolt or shudder, then the shifting is not smooth and there could be a problem with the gearbox. If the engine rpm keeps increasing but there is no increase in the speed, then it could be a sign of the transmission slipping.Most automatic transmission systems, nowadays, have a check engine light or an OD light, which flashes if there is a problem with the engine.

Ok the knock is your flex discs on the drive shaft are bad along with the carrier bearing. Replace before you get stranded or it comes loose.
Fuel distributor may need work if it is hard to start when warm, Replace OVP relay by battery also, its always an issue.

check the engine/trans mounts. A good way to check yourself is to have someone standing in front of the engine with the hood open obviously, while you shift the tranny to drive or reverse, if your friends see's the engine moving vigorously, it's worn out mounts.

you have a accelerater sensor bad and some people call it throttle positional sensor