Seems a lot like the infamous idle air control valve (IAC). Here is a link on how to clean it. http://www.4x4wire.com/mitsubishi/tech/throttle_body/


1989 Montero LS LWB
Rear LSD, KYB's, 3.0L, Lockup A/T, 2" BL, T-Bar Crank, 33" MTZ's, Full Length Roof Rack, 9k Winch with custom bumper, Rock Sliderz