NEED HELP AC not working like it supposed to.

[Herben]

Hello all.

I'm Heren from almost the smallest country in the World "The Netherlands,, And I'm new here.
I've got an trailblazer 2003 ltz with the v6. Every thing works great,...but not the AC.
When I got the car i replaced:

-condensor
-dryer
-ac compressor
-all AC pipe lines

Now the clutch engages. But the ac dus not give me cold air in the cabin .
driver side actually gives me even hotter air than when not using the AC?

While The battery was bad I replaced the battery, put new seals on the head cover, drained the old oils, transmission and engine....etc...etc.

But the main thing is that I just don't get gold air in the truck? what can be the problem?
I don't think its'an actuator becouse with out a.c. every thing is working, and even on my simple car diagnostic cit (no tech 2) I can tell the actuators are al moving.

So at this point I really are empty off everything who can help me solve this.

thanks,
Herben

 

[TJBaker57]

Does the accumulator/low pressure lines in the engine bay get cold? That would tell us something

 

[Herben]

Yes Where they enter the cabin they are ice cold.

 

[Herben]

under the hood, the whole ac system is brand new

 

[mateo]

Did you replace your orffice tube? I didn't think it to be a big deal until I pulled mine. It was almost fully clogged. Now my ac is way better.

 

[Herben]

Thanks,..yes I replaced the orffice tube.

 

[TJBaker57]

This really sounds like an Actuator problem to me

Specifically the blend doors

 

[Herben]

so probably I need to change the both? left and right? Or how can I chech and ferify this?

 

[TJBaker57]

The driver's side is easiest to access. There are 3 actuators down there. The one closest to the front is the defrost, the one in the middle is the mode that controls air to upper or lower vents. The one furthest to the rear of the vehicle is the temperature blend door for the driver's side.

There should be a few threads on this site about testing and replacing these things

 

[Herben]

Ok thank you TJ, will take a look and hope to find it.

 

[TJBaker57]

Here is one example of what commonly happens with these actuators. The old plastic gears crack so even though the motor is driving the plastic gear is slipping on the metal final drive piece

 

[Mooseman]

This should help as well:
a/c control issues 2005 TB (Front actuators/diagram)

Prior to replacing them, try doing a system reset by pulling the HVAC-B fuse for about 30 seconds, put it back, turn the key to RUN while it resets for a couple of minutes. If still the same, the actuators are likely toast.

 

[Herben]

Yes I did the reset,..but,...nothing happens (so I asume this wil indeed be the problem.)

 

[Herben]

thanks all, I'll just order me selfe am actuator and replace it. (driver site is most likely the couse as the other side is function ass far as I can tell.