Online Manual Jeep > Jeep Cherokee > Jeep Cherokee (XJ) > 1984 - 1991 > CEC COMPONENT REMOVAL AND INSTALLATION

CEC COMPONENT REMOVAL & INSTALLATION

1988 Jeep Cherokee

1984-86 Computerized Engine Controls

JEEP 4-CYLINDER COMPUTERIZED ENGINE CONTROL

COMPONENT REMOVAL & INSTALLATION

Cherokee, CJ/Scrambler, Comanche, Wagoneer, Wrangler

MICROCOMPUTER CONTROL UNIT (MCU) R & I

The MCU is located behind the right front kick panel. Remove MCU mounting bolts and disconnect wiring harness connector. Do not bend connector pins when removing. Reconnect harness to MCU and replace mounting bolts.

MIXTURE CONTROL (M/C) SOLENOID R & I

Remove air cleaner and disconnect solenoid harness connector. Remove retaining screws and remove solenoid from carburetor. Coat rubber seal, on end of solenoid stem, with silicone grease or light engine oil prior to reinsertion. Using a new gasket, replace solenoid. Reconnect wiring harness and replace air cleaner.

Fig. 1: M/C Solenoid Location on Carburetor

OXYGEN (O2) SENSOR R & I

Disconnect wire connector from oxygen sensor. Remove sensor from exhaust manifold. Clean threads in manifold. Coat threads of replacement sensor with anti-seize compound. Install new sensor in exhaust manifold and tighten to 32-38 ft. lbs. (43-51 N.m) . Reconnect wire connector.