Test B: Set Speed Fluctuates
- Turn ignition switch to LOCK position. Remove speed control servo/actuator cable from servo/actuator. Speed control servo/actuator is located in right front of engine compartment, behind power steering fluid reservoir. See Figure. Inspect cable by pulling end of cable and observing throttle movement. If cable is okay, go to next step. Replace cable if broken or binding and retest system operation. See SPEED CONTROL SERVO/ACTUATOR CABLE under REMOVAL & INSTALLATION. Repair throttle body linkage if necessary, and retest system operation.
- Drive vehicle and observe speedometer operation without using speed control. If speedometer needle fluctuates, repair speedometer as necessary. See ANALOG INSTRUMENT PANELS - ESCORT & ZX2 article. If speedometer needle does not fluctuate, replace speed control servo/actuator and retest system operation. See SPEED CONTROL SERVO/ACTUATOR CABLE under REMOVAL & INSTALLATION.