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"Part-Time" light on with HVAC off

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Old 10-02-2013, 06:42 PM
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Year: 1988
Model: Cherokee
Engine: 4.0L
Question "Part-Time" light on with HVAC off

Okay, here is the deal, 1988 XJ, when I turn my HVAC system to the off position my "Part Time" light comes on. As long as I keep my HVAC system on in some form or anther it stays off. I should also mention that it also comes on when I shift into 4HI. My issue is I have know idea where to start looking. Any help or idea would be great. Thanks in advance.
Old 10-02-2013, 06:59 PM
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Year: 1990
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Here's a vacuum diagram for ya.
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