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Jeep Wrangler YJ
YJ General Discussion
4WD stopped working on 1987 YJ
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<blockquote data-quote="deadpool1" data-source="post: 440350" data-attributes="member: 21229"><p>if the lamp sticks on in 4wd, and you put vacuum on the inboard nipple, Tire off the road spun! by hand) then the servo is bad or its fork is jammed 4wd.</p><p>if not jammed then the switch is bad. </p><p>If the pinion stops moving and the lamp is stuck on,keyon, then the switch is bad. seen.at the fork housing in the video.</p><p>My lamp was bad , just replaced it now, and all tests pass.</p><p>So did the video so show how easy it is to do the tests. </p><p>My vac motor looks 30 years old and I am amazed it still works.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 440350, member: 21229"] if the lamp sticks on in 4wd, and you put vacuum on the inboard nipple, Tire off the road spun! by hand) then the servo is bad or its fork is jammed 4wd. if not jammed then the switch is bad. If the pinion stops moving and the lamp is stuck on,keyon, then the switch is bad. seen.at the fork housing in the video. My lamp was bad , just replaced it now, and all tests pass. So did the video so show how easy it is to do the tests. My vac motor looks 30 years old and I am amazed it still works. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
4WD stopped working on 1987 YJ
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