No Voltage to A/C Compressor
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New User
Joined: Sep 2009
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No Voltage to A/C Compressor
Recently I replaced the A/C Compressor and Accumulater on my 2005 Ford Expedition. I have no voltage to the compressor. I do have voltage to the low pressure switch. I have checked all A/C related fuses and they are good. I replaced the A/C clutch relay and still no voltage. There is approximately 2.1 lbs of refrigerant in the system. That is all that the system would take since I could not pull it in through the low side with the compressor running. Any suggestions??
Fleet Mechanic
Joined: Feb 2006
Posts: 1,776
Likes: 5
From: Lorain County, Ohio
Disconnect the low pressure switch and place a jumper in the connector with the engine running and the AC on.
Does the compressor engage?
If so, the switch has failed. This is common.
Does the compressor engage?
If so, the switch has failed. This is common.
