Adam3.5

So... I’ll put the A/C on max and it will blow super cold... then all of a sudden it will blow warm air then back to cold. Any ideas what this could be?

Dave Z

Low refridgerant

Adam3.5

Thought that too, I’ve already evac and recharged it.

Joe F

Happy Reading!

https://www.f150forum.com/f38/compre...ng-fix-271852/

joedotmac

I'd recommend taking temperature readings of the cycle boundaries, Coldest temperature observed and the warmest observed after a run time of 5 to 10 minutes. Then you can compare to owner provided readings and make an assessment from there. Observe the total delta in temperature change, and how long the compressor is staying on versus off.

One thing that will make a marginal improvement is insulating the large cold low pressure line from the evaporator to the compressor.