I replaced the ECC with one I pulled out of a junk car and now I am getting the OFF button and recirc button flashing 20 when turning the key and they go off. But still no movement out of the dampers. Granted I have two of them loose, not mounted but electrical connector hooked up.

Thank you combatkarl. My only issue is none of my damper motors are responding after I tried to adjust/calibrate the dampers using a VST. So it seems unlikely that they are all are bad or need to be cleaned. Does anyone know what the volts should be coming from the ECC to the damper motors? Common ...

Looks great man! You have given me the bug to start upgraded things on my V70. Can you tell a difference with the R manifold? Any news on the turbo upgrade yet?

Is there a way to check the damper motors? Could all of them gone bad when trying to calibrate? Since they share a ground and common from the ECC, could the first one, which ever that may be, be bad and preventing the others from working? Or am I over-thinking this?

Good evening Volvo Guru's,

I have searched this forum as well as many others and found a couple similar situations but no resolutions. I apologize in advance if this is duplicated but i just searched 10 pages of forum threads related to climate control.

First noticed that the passenger side would ...

Well done man! Great looking car and giving me the itch to go through mine. Any new news on the turbo ugrade?