hi ,
i have a mitsubishi pajero io which is around 10 years old . when the car is idle ( neutral) as in when stopped at a traffic light the engine weakens (you can c the rev indicator going up and down )and most of the time dies out eventually . it can be stopped by pressing on the accelerator at which time the engine stays on . this problem has been around for some time . will an engine tune up fix this ? i have tried cleaing the idle valve with the spray but that doesn't seem to work pls help me !