heater/air control panel stuck in defrost

[almo247]

Any ideas on how to troubleshoot AIR selector stuck in defrost mode on '96 Mustang 3.8L? Tried cycling several times no help. Next will probably disconnect Battery and start over.

 

[ChingonStang]

By defrost, do you mean the air only blows thru the defrost vents? If so, then look for a vacuum line break or disconnect under the hood near the firewall. I had the same issue that was corrected by fixing a break in one of the lines going to a vacumm tree.

 

[almo247]

Looked under the hood..no disconnected lines. The air is only coming through the defrost vents no matter what the switch position(except off..then it is off). Could it be electrical?

 

[almo247]

Oops! Looked again...that pesky vacuum line over by the left fender area and the one in the middle firewall. THANKS!

 

[ChingonStang]

Oops! Looked again...that pesky vacuum line over by the left fender area and the one in the middle firewall. THANKS!

No Problemo, glad you got it fixed!