2.0 TS Idle Drops Dangerously Low With AC On And Speeds Higher Than 30KPH
What the title says really. And this only happens with the AC on.
If I depress the clutch to come to a stop while the AC is on and at speeds over 30kph the idle drops the nearly zero before settling regularly. The issue doesn't happen with the AC off at all, and if I slow to under 30kph before depressing the clutch it works just fine.
I've narrowed it down to either the Q20 four way pressure switch OR the speedo signal that goes into the climate control ECU (Pin B6), and my thought is to cut that wire to see if it fixes it in the hope the climate control ECU defaults to when the car's stationary.