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- - Idle Problem (https://mitsubishiforum.com/forum/mitsubishi-lancer-lancer-sportback-11/idle-problem-39271/)

Hi all,

I am having a problem. When the engine is slowly revved up to 1.6k rpm, the rpm will automatically go back down to 1.0k rpm. Problem does not exist when engine is quickly revved or when aircon is turned on.

When that occurs, the TPS sensor output seems to be stuck at 0.6V (the voltage should come down to ~0.5V when idling at 1.0k rpm).

I have cleaned the TB and checked the hoses. No problem with the ISC or TPS as i have changed it several times and it is still the same symptom.

Any ideas what is going on ?

did you replace the o-ring on the biss screw ????