Cherokee 2WD L4-150 2.5L VIN P MFI (1991)
8.
With the ignition switch OFF, switch the exerciser tool between HIGH and LOW, and observe the movement of the pintle.
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If the idle speed stepper motor pintle does not move, replace and retest as described in step 6.
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If the pintle operates properly, check the idle speed stepper motor bore in the throttle body for corrosion or blockage and clean as
necessary. Reinstall the stepper motor and retest. If no blockage is found, see manufacturers instructions for exerciser tool.