Needs some help with my air conditioning please.

[KRAM36]

Oh boy, any suggestions on the best way to replace the Air Flow Motor for the fresh/recirculate air flap?

It's on the side of the air conditioning housing, circled with green in this picture.



Also I'm not getting any cold air. I thought I was getting a bit, but it was early this morning and it just felt a bit cooler. Once the day got warmer, zero cool air. Also checking the lines at the front, like where you add the refrigerant, neither line is cold. Shouldn't one of these lines be cold, even having some condensation on it?

[tommy583]

No I don't think either of the lines in the front should be cold, since I believe they are going to and coming from the condensers. The only line that should be cold is the suction line coming from the air box. The other line may be cold going into the air box if the expansion valve is up stream of the box. I'm not sure where the expansion valve is located in this system. But if I had to guess it would be at the inlet of the evaporator coil. So the larger line leaving the air box should be cold.

[paulofto]

Here is the page from the PET showing many of the parts in question including the expansion valve (4) and the 'electric motor central (control?) valve' (6) that may help you out.

HVAC detail .pdf

I know this is not the problem you have but my A/C had a problem where the expansion valve was stuck open. The A/C was ice cold when first turned on but after 10 minutes or so the system would freeze up solid and no air would flow through the vents. The expansion valve was replaced, the system recharged and it has worked to spec ever since.

Is it possible your expansion valve is not opening at all? They can get plugged.

[KRAM36]

Originally Posted by paulofto

Here is the page from the PET showing many of the parts in question including the expansion valve (4) and the 'electric motor central (control?) valve' (6) that may help you out.

Attachment 21866

I know this is not the problem you have but my A/C had a problem where the expansion valve was stuck open. The A/C was ice cold when first turned on but after 10 minutes or so the system would freeze up solid and no air would flow through the vents. The expansion valve was replaced, the system recharged and it has worked to spec ever since.

Is it possible your expansion valve is not opening at all? They can get plugged.

Hum, that expansion valve could be the issue. Is the expansion valve supposed to closed off while the air is on?

[tommy583]

The expansion valve removes pressure from the liquid refrigerant helping it change into a vapor in the evaporator.