You are not going to like this answer. You have to drop the fuel tank to replace the fuel sending unit. The fuel pump, filter and fuel sending unit are a modular assembly. You might want to leave this job to the pros due to the hazards involved with working with fuel vapors. I had mine done Last year at a non-Chrysler, Jeep Dealership under an oil company insurance damage claim for around $ 300.00. The parts were fairly expensive.
"how do you change a throttle position sensor on a 1998 jeep grand Cherokee?" could someone without any experience do it?
It is something that does happen from time to time. Replace the o-rings on the sensor and the plastic adapter housing it sits in.
The vehicle speed signal (speedometer) comes from the abs sensor on the rear axle.
The speed sensor is located on the drivers side of the transfercase, you will see a sensor with a connector, that is your sensor.
You can not.You can not.
Replace the crank shaft position sensor- located on the top right hand side of the bell housing. Very difficult to replace but it will do all you have described
The crankshaft position sensor is on the top driver side of the transmission bell housing.
The sensor can be checked by the use of an ohm meter on the sensor terminals. Unfortunately I do not have the specific data for this vehicle.
2 wire sensor next to the upper hose on the thrmostat housing.
A 1998 Jeep Cherokee does not have a mass airflow sensor. It uses a manifold pressure sensor, MAP, which is on the rear of the intake manifold.
A 1998 Jeep Grand Cherokee has a four speed automatic transmission.
Will bolt up, but will not shift. The 1998 is controlled differently by the computer.