A/C and heat only coming out of defrost vents

[bkyeager1]

I also have the same problem, but I've already replaced the vacuum line from manifold to reservoir. I have vacuum at the connection with all the different colored vacuum lines that is behind the glove box. When I take that connection apart, when I check the black line with vacuum gauge I am getting vacuum. What is my next step? Where are the actuators located and how difficult are they to change?

 

[Chris]

This is surely a vacuum leak, I'm 99% sure of it.

Same thing happened to me and it was indeed a vacuum leak.

It's time to perform a smoke test so you can find that pesky leak.

 

[bkyeager1]

This is surely a vacuum leak, I'm 99% sure of it.

Same thing happened to me and it was indeed a vacuum leak.

It's time to perform a smoke test so you can find that pesky leak.

Like I said I do have vacuum into being the glove box and how do you do a smoke test. Could it be an actuator?

 

[Chris]

Like I said I do have vacuum into being the glove box and how do you do a smoke test. Could it be an actuator?

Do a YouTube search for smoke test machine. You definitely want to rule out a vacuum leak somewhere else first.

As for actuators, I have no idea if a bad one could cause this. I’m honestly not certain of how they work.

 

[Daryl]

Check the vacuum lines going to your actuators. Look above and to the right of your accelerator pedal.

 

[OHFIVETJ]

i'm assuming blue & yellow are the vacuum lines your talking about ?

 

[Daryl]

i'm assuming blue & yellow are the vacuum lines your talking about ?

Check all of them, blue, yellow, red, brown. You can check the actuators with a hand vacuum pump.