Ford F-250 A/C blows cold then hot

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

Moderators: bohica2xo, Tim, JohnHere

Post Reply
Kennyanddawn3
Posts: 3
Read the full article
Joined: Sat Mar 18, 2017 8:39 pm

Ford F-250 A/C blows cold then hot

Post by Kennyanddawn3 »

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: 379
Joined: Mon Apr 18, 2016 6:10 pm

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

Post by Dougflas »

When it starts to blow hot, is the front of the compressor turning? Fords had a history of bad cycling switches.
DarrylS
Posts: 13
Joined: Sat Apr 15, 2017 3:00 am

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

Post by DarrylS »

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.
User avatar
bohica2xo
Preferred Member
Posts: 1170
Joined: Wed May 11, 2016 4:12 pm
Location: Las Vegas, NV

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

Post by bohica2xo »

Check the compressor clutch gap.

.
Post Reply