I removed the idle air control motor before cleaning and only cleaned it with a cloth wet with carb cleaner. As the title says I have a rough idle. It’s not terrible, but it jumps around from about 660 to 760 rpm. Gave up; thought" have another look in the morning". 3SX Performance - Service Manuals Backups 3000GT / Stealth - Mitsubishi 3000GT / Dodge Stealth Parts It tells you how to adjust the idle in the service manual, something to do with grounding a certain pin on your obd diagnosic port and adjusting the BISS Screw. At this time also clean the IAC passages in the throttle body. Fiddled about cleaning various connectors in the engine bay, no luck! I’d really like to solve it before I do anymore aftermarket. Popular Answer. This requires some type of TPMS tool to ­activate each of the tire pressure sensors in a specified sequence so the TPMS control module can relearn … using carb cleaner and a small brass brush. Once clean, install the IAC back in the throttle body and reconnect the IAC wires. Had dinner and watched Canadian GP, then went on the forums. The ECM uses non-volatile memory to keep track of the IAC position when the engine and ECM are turned off. Each car has a unique IAC value that takes into account the condition of the sensors, air and vacuum passages, etc. Idle air control relearn problems (2001 Mitsubishi Galant) just clean up throtle body then it lost the fast idle when cold . Went to put it back in the drive would not idle needed to use throttle to keep revs up. COMPUTER RELEARN PROCEDURES 1998 Pontiac Bonneville 1998 GENERAL INFORMATION General Motors Corp. - Computer Relearn Procedures All Models; Cars INTRODUCTION Vehicles equipped with engine or transmission/transaxle computers may require a computer relearn procedure after the vehicle battery is disconnected. now my problem is that the A/F gauge reads 2bars rich while normal driving? See Service-Manual-3000GT-1992-1996-Volume-1.pdf , Ctrl+F is your friend. Answer. the IAC is a motor driven valve that controls airflow into the throttle body.it is common for idle speeds … I’ve already put RRE headers and an Injen CAI on it. YCT IACV IAC Idle Air Control Valve MD628174 MD628119 AC254 Fits Chrysler Sebring Dodge Stratus Mitsubishi Eclipse Galant Montero Sport Lancer Outlander 3.0L 3.5L V6 … I am aware that it is not suppose to be adjusted. well i let it relearn idle according to the steps... it helped some, but i ended up having to adjust the screw it said in the last step to get it to idle completely right. My brother has a 2000 Mitsubishi Galant with a 2.4L. This is a process that sets the idle with the IAC fully extended. November 29, 2012. Put everything back together and now it idles @ 1500 RPM. 2 hrs searching before finding a link to relearn the idle speed. and when i drive normal its fine and in boost its fine, but as the turbo starts to spool like right when i start to boost it cuts out? SOURCE: idle speed adjustment the ecu drives a unit called an idle airspeed controller.if there is a vacuum leak,the computer will have the idle speed too high. The Idle Learn Procedure When you're having problems, the first thing worth trying is the idle lean procedure. I just reset the computer (disconnected the battery for 10 mins) and no change. For the ECM to properly control idle, the throttle stop screw must be set for "minimum air". Getting Connected: Mitsubishi TPMS Relearn Procedures Most vehicles require some type of “stationary” relearn procedure to reset the system. The car has had an unsteady idle since I bought it a few months ago. The previous owner adjusted the idle. johnhco in Oakland, CA on . 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