98 sho A/C question

[BigEd]

Sorry for not going to the introduction section first but it's about to get really really really hot here in Phoenix.
My A/C system is stuck in defrost. The air is blowing through the defrost vents in the dash and I can't seem to get it to blow through the main vents. I't like the switch over door is not switching.
Anyone have any ideas?
Thank you
Eddie

 

[luigisho]

Try the search feature in the v8 section. click on the drop down arrow and select advanced search, type in a/c or climate control in the field, and select the v8 section on the right to narrow the search from the v6 cars.

I want to say the usual culprit is the oval climate control unit itself but I'm not 100%. I think similar symptoms have been posted in the past on here.

 

[BigEd]

Try the search feature in the v8 section. click on the drop down arrow and select advanced search, type in a/c or climate control in the field, and select the v8 section on the right to narrow the search from the v6 cars.

I want to say the usual culprit is the oval climate control unit itself but I'm not 100%. I think similar symptoms have been posted in the past on here.

Yikes! I'll take a look at the unit today. I'll also search the V8 section.
Thanks

 

[jimtash]

It's the blend door actuator. When they go bad, the defroster vent is the only place air comes out of because that's the natural position of the actuator. Whenever the engine is off, the actuator position by default is to the defroster vents.

 

[BigEd]

It's the blend door actuator. When they go bad, the defroster vent is the only place air comes out of because that's the natural position of the actuator. Whenever the engine is off, the actuator position by default is to the defroster vents.

Thank you so much. That was very helpful.