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99.5 with strange AC issue

876 Views 2 Replies 3 Participants Last post by  toothless
my 99.5 F-250, 7.3 all stock

when the engine is at idle, and the tranny in park, it blows cool air. When the tranny is in gear, and the engine is turning 1900+ RPM it blows cool air. When the tranny is in gear and the motor turns less than 1900 rpm it blows warm/hot air, even if it is turning 1700rpm while going 65mph down the road.

What is this? Low Refrigerant? Possible vaccume line issue?

where to start?
1 - 1 of 3 Posts
Sounds like A/C clutch is disengaging. Mine is doing the same thing, but I haven't fixed it yet.
1 - 1 of 3 Posts
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