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Old 08-26-2012, 12:40 PM   #1
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AC compressor always on

99 TJ 4.0

I recently got everything back and running after a front impact accident. Many threads about other issues but what would cause my compressor to constantly run? Prior to the accident and after i got the Jeep running i could hear it cycle. It doesn't cycle any longer. Any thoughts?

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Old 08-26-2012, 12:58 PM   #2
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Sounds like the miswired the compressor so it is no longer powered by the HVAC circuit wiring.

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Old 08-26-2012, 01:23 PM   #3
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Thanks for the reply... I did the work personally so i never had the wiring disconnected. Should i check electrical plugs at the compressor itself? Also, my knee went into the climate control unit pretty good in the accident, could that be a factor? AC blows cold... Almost too cold.

Just a side note - the fan selector switch only has 1 speed now ( resistor was replaced a few months prior to the accident).
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Old 08-26-2012, 01:38 PM   #4
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The HVAC system has a thermostatic switch that controls the compressor, perhaps the accident smashed it and it no longer works.
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Old 08-26-2012, 02:28 PM   #5
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When i turn the selector knob to non-ac the compressor stops. Is that indicative of a bad hvac switch?
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