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Home >> Jeep >> 1989 >> Wrangler Islander, 2.5 E >> Repair and Diagnosis >> Engine Performance >> System >> 2.5L TBI CEC Testing >> Component Testing >> Idle Speed Actuator (ISA) Motor >> Preliminary Checks

Preliminary Checks

The following test must be performed using ISA Exerciser Tool (Ele.AB.99). If ISA motor is to be tested off the vehicle, ISA motor shaft must be lightly preloaded to avoid having ISA motor jam during test. Use light finger pressure to preload ISA motor shaft and simulate throttle return pressure.