A 1998 Jeep Wrangler does not have EGR.
The Solenoid is located on top of the starter on the rear passenger side of the engine block.
where is the oxygen senor located on 1995 jeep wrangler
The torque converter solenoid is inside the transmission on the valve body.
In a 1998 Jeep Wrangler, the oxygen sensor is located in the exhaust pipe. It can be found just below the junction of the exhaust manifold and the exhaust pipe.
It is located on the drivers side of the throttle body
Will a 304 engine fit in a 1998 TJ jeep wrangler?
The transmission fluid is located in the transmission.
I assume you mean the starter solenoid. It is mounted right on the starter itself.