Swapping between dme's

[Spdrmn15]

My air conditioning has stopped working on my 2022 3.0 premium, it worked last year. The only thing I've changed on the car is an ecutek tune on a cloned dme. I don't know if the actual dme could be causing the issue or if it might just be something with the AC system. I'm hoping to trouble shoot it myself, but wasn't sure if the cloned dme could be causing the issue and the easiest way to check would be to swap back to my original one, but I'm not sure what new issues that could create if any. What are all the problems that can arise from swapping between two different computers? I already flashed back to the stock tune to make sure it was nothing to do with ecutek. When I try to turn on the AC the engine revs up a little as it should but then it just blows out air.

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[Jesse DaBears]

Did it stop working immediately after the ecu swap? If not i doubt its from the ecu.

 

[XtremeMaC]

When I try to turn on the AC the engine revs up a little as it should but then it just blows out air.

It does sound like, your compressor is engaging if it's rising the RPMs up and fans are working in the HVAC unit. Chances are heater is working as well.
Did you fiddle with any of the HVAC service valves? Perhaps you have a leak in the system or loose connection. Any errors thru OBD reader?

ps. if you didn't run into any issues swapping the cloned ECU, chances are nothing will happen. *insert experienced user answer here*

@Mason wanna chime here with your HVAC license ?

 

[Mason]

@Mason wanna chime here with your HVAC license ?

Residential =/= vehicular but I’ll give it a shot

Does the heat work?
Does AC work with the filer out?
Is there any condensation under the car while the AC is on?

edit: My early guess is that it’s prob out of refer. I believe it takes r1234yf?

 

[Spdrmn15]

Did it stop working immediately after the ecu swap? If not i doubt its from the ecu.

I swapped ecus over the winter, and finally had a warm enough day to want the AC, so I'm not sure

 

[Spdrmn15]

It does sound like, your compressor is engaging if it's rising the RPMs up and fans are working in the HVAC unit. Chances are heater is working as well.
Did you fiddle with any of the HVAC service valves? Perhaps you have a leak in the system or loose connection. Any errors thru OBD reader?

ps. if you didn't run into any issues swapping the cloned ECU, chances are nothing will happen. *insert experienced user answer here*

@Mason wanna chime here with your HVAC license ?

I didn't check the heater specifically. No errors, nothing under the hood has been touched other the. What was needed for swapping ecus.

 

[Spdrmn15]

Residential =/= vehicular but I’ll give it a shot

Does the heat work?
Does AC work with the filer out?
Is there any condensation under the car while the AC is on?

edit: My early guess is that it’s prob out of refer. I believe it takes r1234yf?

I'm sure filer is a typo but I'm not sure what for.
I didn't try the heat, but I can when I get home. I didn't sit long enough for condensation to drop but I can try that too. I was hoping to hook a pressure gauge to it but couldn't get my buddy to come by, and a leak with 4k miles would be upsetting

 

[Mason]

I'm sure filer is a typo but I'm not sure what for.

Filter is what I did mean.

it’s to rule out airflow being the issue. Checking the refrigerant will be best if possible.

 

[Spdrmn15]

Filter is what I did mean.

it’s to rule out airflow being the issue. Checking the refrigerant will be best if possible.

Cabin air filter?

 

[XtremeMaC]

Cabin air filter?

Forget about filter.
Check for refrigerant leaks for best case scenario. Look to see if somehow two lines (pipes) going to compressor are loose at compressor, should be 1 flange bolted to compressor. Also, there's one on the firewall going into the vehicle...
Is that's absolutely no on the obd scanner errors or did you only check dash for errors..

There could be numerous issues, TXV, bad clutch, etc. Etc.
I guess best bet is take to dealer...

 

[Spdrmn15]

Forget about filter.
Check for refrigerant leaks for best case scenario. Look to see if somehow two lines (pipes) going to compressor are loose at compressor, should be 1 flange bolted to compressor. Also, there's one on the firewall going into the vehicle...
Is that's absolutely no on the obd scanner errors or did you only check dash for errors..

There could be numerous issues, TXV, bad clutch, etc. Etc.
I guess best bet is take to dealer...

No one codes. Checked that multiple times.

 

[softmando]

Check your coolant level it may be low on coolant since these cars rely on coolant to help cool down the refrigerant.

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