Car Jerking at low speed when put contained by D or R?

I have a 2000 infinity I30 beside around 93000 miles. Recently my car started jerk at when i put it in "D" or "R" and do not press the gas propel. When i put it back into "N" the jerk stops. Basicly it jerks when i put it contained by D or R and do not push the gas paddle. As soon as I push the gas row, to increase the speed, the jerking go away. I thought that the fuel filter might be cloged up and got the motor grease and fuel filter changed at Wallmart , but that didn't stop the jerking. I am not sure going on for this but i think it single happend at cold start, if i run it and get the engine hot and consequently trun it off and trun it backbone on i think the jerk goes away, Tomorrow i will do a couple check to confirm if it only jerk at cold start.

Thanks a bunch guys. and oh yeah my check enginer light is on also.

Bad stove core?

Answers: I would own the timing checked by a motor mechanic - its cheaper than pulling the engine down and would rule out an obvious possibilty

Pressure feedback sensor, sable 3.0 dohc 2001...

sounds approaching the flex plate in the nouns is going out or is simply lose.Poosbly some of the tines are broken off or bent frail. That could cause a slight jerk motion when you engage the tranny to drive or reverse.

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