Hey guys appreciate your suggestions and experience in diagnosing a Corolla 1.5 VVTI with a rough idle problem. (ODO - 150000km)
Idle fluctuates between 500 - 750 RPM (index goes up and down from 600RPM)
Sometimes the problem can be fixed after cycling Ignition On/Off several times (Using pushbutton) OR by driving the vehicle on gear position S for about 5-10 min.
The problem is intermittent.
Any suggestions. Thank you