So, Finally got my AC going again. Included changing out the condensor (had a leak) and the accumulator, and also the orifice tube.

I've recharged a few other vehicles (about 4), and everything went great. I finally got my truck able to hold a vacuum, and also able to take the freon and get it old.

Heres my problem: The ac blows cold out of the defrost, only when it is on "max AC." However, when I want it to blow out of the front vents I hit "VENT" on the ac controller thing, and it suddenly looses its cool. It's not hot, its kind of just the ambient temperature.

Can anybody help me out with this?

I have noticed while I was charging, that when I switched it from "MAX AC" to "VENT" the compressor would stop and the pressures would drop.

I have "VENT" set at the same lowest degree possible, just as the "MAX AC" setting.

Any idea?

 

Does your **** have Max AC, AC, Panel then off? See pic.

If so the only ones that cool are the Max AC, and AC. Mine does not have "Vent". But as far as I know in any car Vent is just fresh air and the compressor turns off.

 

This is mine. Different than yours.

So on "max AC" is it supposed to be blowing out of the vents too?

Seems like I'm missing a vacuum or actuator.

 

Yes on "Max AC" it should close out the fresh air intake, recirculate only cabin air and use whatever vents you select with the bottom buttons.

 

So, what would your opinion be as to why it's not coming out the vents during "max ac"?

 

EATC module has a Self Test, Press OFF and Floor button simultaneously then press Automatic button within 2 seconds to display the DTC.

 

I did this. It went through the cycle, but don't think it came up with anything. At the end if the cycle, it just light up every light possible until I pushed a different button.

What's that mean?

 

You need a scantool to read the DTC. EATC is complicated to repair because it has cabin temp sensor, ambient temp sensor & sunload sensor. Vehicle speed & coolant temp is also used to operate EATC.

Pressing the Vent will disable the AC Compressor.

 

Oh ok. Well I've got a decent one. I just assumed a number would come on the dash. So, what do I do? Hook up scan tool...then do the off/floor with the ac and then read codes on scan tool? Didn't have a check engine light

 

The cabin temp should be 40°-100°F to intiate self test. I'm not sure if Generic Scantool can read EATC Code.

Air is not blowing from defrost outlet when you press floor, floor panel or floor def?