check your ecu under the dash ( behind stereo and cubby hole .. shifter cover comes off )
there might be an idle adjuster in the computer if not
take it to a mechanic
Idle speed is set by the PCM and IS NOT ADJUSTABLE.
maybe your sincronizer is going out. that or bad linkage.
diagram of rpm in trooper
You could have a bad exhaust valve
YOu need to blead the system .. then it should require no adjusting
You can't. Its computer controlled
It is normal for the RPM to increase a little when put in park or neutral. If the RPM increases by a lot, then you need to adjust your idle speed.
I would say 10w-40 Castrol Magnatec
Adjust your idle.
In 1996, the Cummins diesel was rated at up to 215 bhp at 2600 rpm and 440 lb-ft @ 1600 rpm, ... ft. of torque at 1400 rpm and 305 horsepower at 2900 rpm
5.500 rpm
ease off the throttle. change up a gear