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| Mustang Problem Diagnosis Got a problem you can't fix? Post here and one of our members will answer as soon as possible. |
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#1
04-25-2006, 01:21 PM
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A/C problem
Living in phoenix A/c is a necessity. However my Mustang begs to differ.
If you've read my other posts, the Heat works great and cool air...well not so great. So I bypassed the heater core today and went to fire up the A/C system. It went good until the Compressor started to cycle. 3 seconds on, 15 Seconds off. I bought a low pressure switch and that is not the problem. What else could it be? I need to have A/C today! 
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#2
05-08-2006, 12:22 PM
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Re: A/C problem
There is a multi function relay that sits behind your coolant resorvoir in the engine bay. It controls the fan, compressor, fuel pump, etc. Looks like a black metal box with 2-3 screws and a connector with wires going in it. Looks like a mini ecu. My air stopped working and I unfortunatly had to pay a guy $40 for him to tell me the relay was bad. Wanted a $100 for a new one, found one in a junkyard for $10. Air works fine. Might be worth trying.
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#3
05-08-2006, 01:17 PM
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Re: A/C problem
You might need your refrigerant updated or you might have a coolant leak.
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