2003 f250 a/c clutch not engaging
50

Asked by bulred Aug 22, 2015 at 09:38 PM about the Ford F-250

Question type: Maintenance & Repair

jumper high & low switches ,voltage at both.no voltage at compressor pigtail. Have pulled
relay -jumper and compressor works &a system blows cold air good...

1 Answer
50

bulred answered 8 years ago

Found broke wire at cylinder head temp sensor.The PCM would not send single to a/c relay while cylinder head sensor in fault. Replaced sensor and pigtail for cylinder head temp.Next I cycled key a few times then started engine. A/C working fine now.. PCM-----power control module

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