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1990 Jeep Cherokee Question: 4 wheel drive doesnt work



snowedin11, 4.0L 6 Cylinder, Cotter, AR, February 09, 2011, 11:20

It always worked good before,one day just stopped(4-wheeldrive)

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  • Answer #1

    February 15, 2011, 14:40

    It is possible that the Front axle shift motor actuator or associated vacuum hoses and / or switch may have a leak. Carefully inspect all vacuum hoses for splits, cracks and swelling. Replace if necessary. There are (5) components, !. Vacuum Control Switch, 2. Air Vent Filter, 3> Vacuum Shift Motor, 4. 4WD Indicator Light Vacuum Switch, 5. Vacuum Check Valve. plus vacuum harness and hoses.

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