Question about 1995 Ford Aerostar

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The air cond compressor not engaging, checked it out and there is no voltaged going to it from the switch,i can activate manualy with 12 volts however but still no cold air. Is there a relay between the switch and the compressor? All the fuses under the dash check out ok. This is a 4.0 engine. What is that small tank on top of the unit for? It has 4 wires going to it.

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The switch protects compressor from turning on when freon is low. add a charge and leak detector to system, thats why its not blowing cold when turned on manually

Posted on Apr 09, 2011


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