You have either a high idle or a cogged trans. oil screen/low press that retards the engaging.

 

guy its a fuel injected vehicle with a suprising amount of torque and horses

check your throttle linkages maybe their stuck or your tps is sending the wrong amount of pedal movement

 

Could be the torque converter lockup malfunctioning. Does the engine try to die when tou put in D and apply brakes? How much is the RPM drop from 1k rpms?

 

I merged your threads, and don't plan on charging you. In the future, please use the original thread throughout. Posting a new thread on the same topic, will just get you picked on a bit.

 

sorry i just figured out how to find my old threads thats why there was a repost. i checked the throttle cables and they seem fine the engine does not try to die when i engage my gears. like i said its the hard thud that scares me. there is no other problem while driving. granted this jeep sat for two years

 

Check the u joints of the drive shaft by turning the shaft with your hands with the jeep in N and hand brake.

 

ok what am i looking for a thud or basically the same noise/feeling i got when i engaged gear?

 

You're looking for an inordinate amount of play in the u-joints. That could be causing your "thud" when you engage drive.

 

you are looking for a bad u joint. (do you know what that is?)

If one of the two u joints are worn, you will have play between the two yokes, and that may cause the thud.

 

ok i'll go check it out guys appreciate the input. i'll get back to you on that

 

a thousand rpm at idle is hi
should be more like 600

 

im not sure, maybe a sensor is bad...like the tps? would that relate to idle speed?

 

Yes...

 

yeah i checked and def didnt have any play i'll try the tps.

 

The TPS has nothing to do with idle speed.