Mitsubishi Stepper Motor Idle Valve Problem

Wilson13B

Known Member
Senior Member

Wilson13B

Known Member
Senior Member
Dec 15, 2010
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Kuala Lumpur
Hi,My Waja with Mitsubishi 4G18 engine recently develop a problem with its idle control , sometimes can reach 1500rpm and sometimes can reach as low as 4-500 range .

Engine also stalled on cold start occasionally ,need to keep the accelerator depress if this happen .

I did a total throttle body and intake manifold cleaning already and a simple diagnostic and found that the body of the valve get quite hot in operation , does this normal ? and when it get scalding hot , high idle issue happen .



Where can get a new one and how much does it cost ?

Thanks for any advice =)