A/C blowing through wrong vent

[clinebarger]

Originally Posted by structures

harness looks good.

I need codes to help you, Unless you just want a guess?....When you put the "A/C full blast" you mean you hit the recirculate button, then it defaulted to defrost/floor only? If so you chould have a bad recirculation door actuator motor.

[structures]

Originally Posted by clinebarger

I need codes to help you, Unless you just want a guess?....When you put the "A/C full blast" you mean you hit the recirculate button, then it defaulted to defrost/floor only? If so you chould have a bad recirculation door actuator motor.

Yeah these intermittent problems are hard to guess at. When you say codes. You mean from the OBD port? I don't know anybody with a tech II and I looked at buying one years ago, but I think it was like $2000 so I passed.

So what happens is, I start the truck with the vent control knob on the top vent setting, A/C and recirc are already on. Almost immediately the air blowing transfers from the top vents to defrost. Even though the selector knob is still on the top vents. It's happened twice now. The only way to get it to go back to normal is to pull over turn off the engine and restart the engine. This last time coming home from work I couldn't get it to work I pulled over twice and tried turning it off and on, but couldn't get the air to stay blowing thru the top vent. It just transitioned to the defrost vents on its own. What's weird is that if I turn the vent knob to lower vents while this problem is going on I can get the air to transfer down. I drove home with cold air blowing on the windshield and my feet. Let me tell you when it's 102 outside that doesn't keep you very cool!