AC cools for less than a minute then blows hot

2004 FORD F-250
235,600 MILES • 6.0L • V8 • 4WD • AUTOMATIC
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JOHNHARE21
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Just bought this three weeks ago. I knew the AC was troubled. Ford said they serviced it the day before but it is the same then as now.
At engine operating temperature or not, the AC will blow really cold air for almost one minute then goes warm. No other changes are noticed in the operation.
I have not begun any troubleshooting. Ford will diagnose the system for $95.00.
John
Jul 25, 2017 at 12:05 PM
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STRAILER
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Hello,

When the system is not working is the compressor clutch turning? Here is a guide that will help you in the right direction.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please run this test and get back to us we are interested to see what it is.

Cheers, Ken
Jul 25, 2017 at 3:50 PM
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JOHNHARE21
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yes, yes the clutch was turning the whole time I observed it and now I am at "no cold air"
Jul 25, 2017 at 6:07 PM
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STRAILER
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Okay nice work, not with the system running can you grab a hold of the larger AC tube coming from the firewall and back into the compressor to see if it is cold?

Please let us know what you find.

Cheers, Ken
Jul 25, 2017 at 8:17 PM
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JOHNHARE21
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Sorry guys (gals) Ran late last night and today I had an appointment after work with my local FORD service tech to run diagnostics.
Known him for 9 years. I can write back and tell you what they found. Thanks a bunch I just ran out of time on this project.
Jul 26, 2017 at 6:40 PM
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STRAILER
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Please let us know what happens.

Cheers, Ken
Jul 28, 2017 at 10:33 AM