96 jeep cherokee idles high/accelerates by itself

2001 grand cherokee generally had a 4.0, 242, I6 engine with 196 hp @ 4600 RPM, 230 lb-torque @ 3000 RPM.

The 4.7 Ltr (287 c.i V-8) was available with 235 HP @ 4800 RPM & 295 lb-torque @ 3200 RPM.

Towing cap was around 5,000 lbs.

in later models of WJ grand cherokee there is no bleeding screw on radiator or its hoses( it is supposed to be done by autobleeding with a special type of "high tech benz style radiator cap". but on previous versions like yours there should be a bleeding screw just left of radiator cap. you need to bleed the air when you raise the front and while letting it idle. (this is for 4.7 v8 version) if yours is 4.0 i6 drop me a line.

if your engine is AMC I6 high output version, it may wont fit without doing small modifications. if it is not high output version it will. transfer case differs model to model. np242 selectrac and np231command trac. they have little difference on 4wd systems. all have 2wd option.

actually it is supposed to have same transmission versions between 1988 to 2001. Aisin-Warner AW4.

THROTTLE POSITION SENSOR, easy to change and will cause this problem. mounts to intake. If that doesnt work, replace the idle air control solenoid. You can also replace the crank and cam position sensors later if you still have issues,

CHECK FUEL REGULATOR ON FUEL INJECTOR RAIL,&ALSO FUEL PUMP, CHARLIE

Check your throtle postition sensor. It monitors what postion the throtle is at and sends that info to the ecm. It will go bad and cause that problem.

fuel pressure seems a bit high...could be a bad regulator. can't remember if yours is on top of the sending unit (on tank) or on the fuel rail though. Do more testing there.

The computer controls the ide...after a jump it needs at time up to 15 mins to reset idle i can only sugest driving it 15 mins and if computer dont kick in on idle...then u have a computer problem in Car

your parts store would call it an oil presure sending unit

check for vacuum leaks make sure throttle bodygasket is not broke and inplace and check fuel pump pressure.