A/C compressor cycling is that normal?
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A/C compressor cycling is that normal?
I recently bought an 92, f250 diesel and it has AC.
The one thing I think is odd is the the clutch on the A/C compressor cycles no matter where the heater fan swith is located. Is this normal? I though this should only happen if the blower switch is set to A/C or Max A/C.
I also have a very dimmly lite battery light. The alt is producing good voltage.
I noticed from trying to read the wiring diagram that the a/c clutch has a diode somewhere I am wondering if it is shot?
Any direction would help
The one thing I think is odd is the the clutch on the A/C compressor cycles no matter where the heater fan swith is located. Is this normal? I though this should only happen if the blower switch is set to A/C or Max A/C.
I also have a very dimmly lite battery light. The alt is producing good voltage.
I noticed from trying to read the wiring diagram that the a/c clutch has a diode somewhere I am wondering if it is shot?
Any direction would help
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From: Virginia
The AC clutch should only cycle in AC and defrost.
Keep an eye on the charging system, and if it works ok, I would not worry about the light, as long as it glows bright when you first turn the key and the engine is not running.
The diode is there to suppress the reverse polarity kickback voltage spike from the clutch coil when the voltage is dropped from the coil. If the diode was not working, the AC clutch would probably not work either.
Keep an eye on the charging system, and if it works ok, I would not worry about the light, as long as it glows bright when you first turn the key and the engine is not running.
The diode is there to suppress the reverse polarity kickback voltage spike from the clutch coil when the voltage is dropped from the coil. If the diode was not working, the AC clutch would probably not work either.
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ruffneck30
1999 - 2003 7.3L Power Stroke Diesel
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Feb 9, 2013 09:06 PM
