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A/c problems help!

Old Jul 19, 2015 | 12:03 PM
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A/c problems help!

So I've had leaks fixed, low press sensor replaced, fuses check out, clutch coil replaced and still have gotten nowhere. I have 12v of power at the clutch connector unplugged, but when I pick the wire while it's plugged up and turn the system on, the 12v disapeares. I've jumped the clutch directly to battery and it does operate and blows plenty of cold air. Why do I lose voltage when the connector is connected??? Thanks in advance
 
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Old Jul 19, 2015 | 12:09 PM
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What year is your truck ?
 
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Old Jul 19, 2015 | 12:11 PM
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95 f150 5.0 107,xxx mi
 
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Old Jul 19, 2015 | 12:29 PM
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You are dropping voltage ... Sounds like a wiring or connector issue .
Check for corroded connections and check for damaged wiring .
 
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Old Jul 19, 2015 | 02:37 PM
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it would be super helpful to have a wiring schematic. where do i get such thing?
 
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Old Jul 20, 2015 | 09:08 AM
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Originally Posted by Geary
it would be super helpful to have a wiring schematic. where do i get such thing?
Here:




The disappearing 12V is caused by an open circuit, it's a phantom voltage that your high impedance meter is displaying.
 
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Old Jul 30, 2015 | 08:37 AM
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Check to see if you have voltage before and after the ac cycling pressure switch, if you don't work your way back.
 
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