Ford F-250 A/C blows cold then hot

Friendly format provided to inquire about automotive a/c systems.
Archived Forum

Moderators: bohica2xo, Tim, Dougflas, HECAT

Kennyanddawn3
Posts: 3
Joined: Sat Mar 18, 2017 8:39 pm

Ford F-250 A/C blows cold then hot

Postby Kennyanddawn3 » Sun Mar 19, 2017 6:56 pm

I have a f250 7.3 diesel that blows cold air for 20 minutes or so then turns warm and humid ???? Then will blow cold again back and forth checked freon level it is fine has been doing this for a couple of years any advice shop can't figure it out :roll:
Dougflas
Posts: 103
Joined: Mon Apr 18, 2016 6:10 pm

Re: Ford F-250 A/C blows cold then hot

Postby Dougflas » Tue Mar 21, 2017 1:58 am

When it starts to blow hot, is the front of the compressor turning? Fords had a history of bad cycling switches.
DarrylS
Posts: 14
Joined: Sat Apr 15, 2017 3:00 am

Re: Ford F-250 A/C blows cold then hot

Postby DarrylS » Sat Apr 15, 2017 4:36 am

I would be tempted to just replace the low pressure switch that is quick and easy. The problem must be really intermittent if an AC shop cannot diagnose? Just need to take pressure readings and keep an eye on compressor engagement.

Return to “Automotive Air Conditioning Forum”