My engine dies on low speed (in hold ups)when the AC is on. I ve already clean the throttle and oxygen sensor, cannot accertain fuel pump pressure, but the car works fine if the AC compressor not ON.
Idle speed can be adjusted but the use of a scan tool is required. One thing to check before you get into that would be to check the PCV Hose connections and condition. Check the the connections and hose for leaks. There is a chance that a Code P0505 – idle control system, may be set in this condition. Check the PCV hose and intake for leaks if code P0505 is set.
Idle Speed Adjustments
Curb Idle Speed
- Ensure engine is at operating temperature.
- Connect scan tool to DLC.
- Turn power switch to ON.
- Turn scan tool ON.
- Follow scan tool manufacturers instructions.
- Idle Speed: 600-700 RPM.
Toyota Code P0505 – Idle Control System
