It's starting to get worse. When I first start the truck, and turn the a/c on max, it will default to defrost. If I turn it to low fan though, it will come out the face level vents. As I drive the truck, i can turn it to max fan, but it never blows as hard as before. Are there vacuum lines I can check for the blend/door motor, or is this more likely the motor itself??
that little control valve only gets vacuum when max AC is selected any other time that vacuum line has no vacuum
it sounds like your loosing vacuum when the truck sits due to a leak
and the vents are having an issue changing from defrost to the desired
I would start by checking the Vacuum strength
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ford Powerstroke Diesel Forum
5.4M posts
265.8K members
Since 2005
A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!