What is the function and testing procedure for the Idle Control Valve on Mitsubishi Diamante?

The Idle Control Valve is a DC stepper motor managed by the PCM, containing a position sensor that detects its opening. A signal is sent to the PCM which varies the motor to keep the engine at the correct idle speed. To test the Idle Control Valve, place a stethoscope or long screwdriver on it and listen for clicks in response to an assistant turning the key ON (engine OFF). If you hear a clicking sound, the PCM driver and circuit are good. If the driver and circuits have been confirmed as operational, disconnect the connector from the Idle Control Valve and take an ohmmeter to measure resistance between pins 2 and 3 (of the Idle Control Valve connector) to see if they measure between 28-33 ohms. If they don't the Idle Control Valve must be replaced. To remove the Idle Control Valve from the throttle body, first disconnect the negative cable of the battery. Remove the air cleaner intake hose and any hoses from the Idle Control Valve you can. Remove the electrical connectors and retaining bolts. Reverse the steps to remove the Idle Control Valve while replacing the IAC gasket.

How to adjust the minimum idle speed and replacing the Idle Control Valve (IAC motor) on Mitsubishi Galant?

The minimum idle speed is set at the factory and usually does not need any adjustment in the normal operating conditions; nevertheless, should the throttle body be changed or any reason to suspect that there is a problem with the minimum idle speed, it is recommended that the vehicle be taken to a qualified automotive repair shop. The PCM varies engine idle speed by operating the Idle Control Valve, which is installed on the throttle body and regulates the quantity of air entering the engine by passing through the closed throttle valve, according to the load on the engine, like running the air conditioning or the automatic transaxle. Firstly, make sure that the ignition key is turned to the OFF position and take off the air intake duct. To the models between 1994 and 1998, unscrew throttle body, unscrew Idle Control Valve mounting screws, unscrew Idle Control Valve, then replace the old gasket with a new one, and screw Idle Control Valve back into its place. In models since 1999, de-electrify the electrical connector to the Idle Control Valve, loosen the screws, dismount the Idle Control Valve, change the old O-ring with a new one, and re-mount the Idle Control Valve, being careful to tighten the screws.

Genuine Mitsubishi Idle Control Valve

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9 Idle Control Valves found

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Mitsubishi Fast Idle Solenoid Part Number: MD614706
$239.92 MSRP: $338.87
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Product Specifications
- Other Name: Valve, Fast Idle Air; Fuel Injection Idle Air Control Valve; Idle Control Valve
Fits the following Mitsubishi Models:
- Montero | 1995-2002 | Base, LS, Limited, SR, XLS | 6 Cyl 3.0 L GAS, 6 Cyl 3.5 L GAS
- Montero Sport | 1997-2003 | ES, LS, Limited, XLS, XS | 6 Cyl 3.0 L GAS, 6 Cyl 3.5 L GAS
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Mitsubishi Fast Idle Solenoid Part Number: MD614449
$275.42 MSRP: $389.02
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Product Specifications
- Other Name: Valve, Fast Idle Air; Idle Control Valve
Fits the following Mitsubishi Models:
- Mighty Max | 1991-1994 | 1 Ton, Base | 4 Cyl 2.4 L GAS, 6 Cyl 3.0 L GAS
- Montero | 1991-1994 | Base, LS, RS, SR | 6 Cyl 3.0 L GAS
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Mitsubishi Idle Speed Control Part Number: MD628061
$304.23 MSRP: $429.70
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Idle Control Valve
Fits the following Mitsubishi Models:
- Mirage | 1997-2002 | DE | 4 Cyl 1.5 L GAS
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Mitsubishi Idle Speed Control Part Number: 1450A069
$423.02 MSRP: $597.49
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Idle Control Valve
Fits the following Mitsubishi Models:
- Eclipse | 2000-2005 | GS, RS, Spyder GS | 4 Cyl 2.4 L GAS
- Galant | 1999-2003 | DE, ES, LS | 4 Cyl 2.4 L GAS
- Lancer | 2003-2006 | Evolution, Evolution MR, Evolution RS, Evolution SE | 4 Cyl 2.0 L GAS
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Mitsubishi Idle Speed Control Part Number: MD628059
$455.11 MSRP: $642.82
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Fuel Injection Idle Air Control Valve; Idle Control Valve
Fits the following Mitsubishi Models:
- Diamante | 1997-2004 | Base, ES, LS, VR-X | 6 Cyl 3.5 L GAS
- Montero | 1994-1998 | Base, LS, SR | 6 Cyl 3.0 L GAS, 6 Cyl 3.5 L GAS
- Montero Sport | 1997-2003 | ES, LS, XLS | 6 Cyl 3.0 L GAS
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Mitsubishi Idle Speed Control Part Number: MD628051
$480.05 MSRP: $678.03
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Fuel Injection Idle Air Control Valve; Idle Air Control Valve; Idle Control Valve
Fits the following Mitsubishi Models:
- Eclipse | 1991-1999 | GS, GST, GSX, Spyder GST | 4 Cyl 2.0 L GAS
- Galant | 1990-1992 | GS, GSR, GSX, VR-4 | 4 Cyl 2.0 L GAS
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Mitsubishi Idle Speed Control Part Number: MD628174
$492.59 MSRP: $695.75
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Fuel Injection Idle Air Control Valve; Idle Air Control Valve; Idle Control Valve
Fits the following Mitsubishi Models:
- Eclipse | 2000-2005 | GT, GTS, Spyder GT, Spyder GTS | 6 Cyl 3.0 L GAS
- Galant | 1999-2003 | ES, GTZ, LS | 6 Cyl 3.0 L GAS
- Montero | 1999-2002 | Base, Limited, XLS | 6 Cyl 3.5 L GAS
- Montero Sport | 1999-2004 | LS, Limited, XLS, XS | 6 Cyl 3.5 L GAS
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Mitsubishi Idle Speed Control Part Number: MD628053
$497.83 MSRP: $703.15
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Product Specifications
- Other Name: Servo Kit, Throttle Body; Fuel Injection Idle Air Control Valve; Idle Air Control Valve; Idle Control Valve
Fits the following Mitsubishi Models:
- 3000GT | 1991-1999 | Base, SL, Spyder SL, Spyder VR-4, VR-4 | 6 Cyl 3.0 L GAS
- Diamante | 1992-1996 | ES, LS | 6 Cyl 3.0 L GAS
- Mighty Max | 1990-1994 | Base | 6 Cyl 3.0 L GAS
- Montero | 1989-1994 | Base, LS, RS, SP, SR, Sport | 6 Cyl 3.0 L GAS
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Mitsubishi Closed Throttle Switch Part Number: MD614216
$140.20 MSRP: $189.97
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Product Specifications
- Other Name: Switch Kit, Throttle Body; Idle Control Valve; Idle Control Switch
Fits the following Mitsubishi Models:
- Eclipse | 1990-1994 | Base, GS, GST, GSX | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Galant | 1989-1993 | Base, ES, GS, GSR, GSX, LS, S, VR-4 | 4 Cyl 2.0 L GAS
- Mirage | 1989-1993 | Base, ES, GS, LS, RS, S, SE, Turbo, VL | 4 Cyl 1.5 L GAS, 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS
- Sigma | 1989-1990 | Base | 6 Cyl 3.0 L GAS
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Mitsubishi Idle Control Valve

The Mitsubishi Idle Control Valve continuously meters bypass air to keep the engine idling smoothly. This allows easy starts and stable revs even if lights, steering, or air con add extra load on the motor. The Mitsubishi has been delivering dependable performance and smart technology since the launch of its first Model A sedan over a century ago. MIVEC engines, Super All Wheel Control for managing strong grip and control, and plug-in hybrids that stretch out the savings while keeping the drive fun. A voice-guided cruise control, smartphone link display, and safety sensors make daily traveling easier. Tests of fuel cell systems show a commitment to greener travel. Durable construction and easy maintenance with a service network reassures the owner. This highlights the brand's intent of being reliable and user-friendly across city cars, crossovers, and SUVs. In alignment with this philosophy of fundamental simplicity, the Idle Control Valve is located in a throttle body passage where it acts as a gate opening for extra air and closing to reduce that flow based on computer commands. As the transmission shifts when the stereo cranks or the air conditioning cycles, the valve responds much more quickly. This action allows the control unit to balance the fuel with oxygen more evenly to create an even pulse. As a result, the steering wheel does not shake. When a sticking Idle Control Valve is caused by carbon and dust, this can upset the fine balance between fuel and air mixture. However, cleaning or replacement will return idle smoothness, improved consumption, and softer take-off in all Mitsubishi vehicles, which use the carmaker's common multi-port injection layout.

Pick genuine OEM Idle Control Valve if you want superb performance and durability that lasts. Mitsubishi builds that using high-grade materials and official factory techniques to meet very strict standards. This means you get parts you can actually trust for your daily drive. Finding the right parts is simple in the massive stock of genuine inventory. You can stop guessing if a part will fit or hold up. You will love the low prices, dependable service and the real manufacturer's warranty on Mitsubishi Idle Control Valve. Order today and the store will ship your brand-new items to your door as fast as possible.

Mitsubishi Idle Control Valve Parts Questions & Experts Answers

Idle Speed Control
MD628053
Q: What is the function and testing procedure for the Idle Control Valve on Mitsubishi Diamante?
A:
The Idle Control Valve is a DC stepper motor managed by the PCM, containing a position sensor that detects its opening. A signal is sent to the PCM which varies the motor to keep the engine at the correct idle speed. To test the Idle Control Valve, place a stethoscope or long screwdriver on it and listen for clicks in response to an assistant turning the key ON (engine OFF). If you hear a clicking sound, the PCM driver and circuit are good. If the driver and circuits have been confirmed as operational, disconnect the connector from the Idle Control Valve and take an ohmmeter to measure resistance between pins 2 and 3 (of the Idle Control Valve connector) to see if they measure between 28-33 ohms. If they don't the Idle Control Valve must be replaced. To remove the Idle Control Valve from the throttle body, first disconnect the negative cable of the battery. Remove the air cleaner intake hose and any hoses from the Idle Control Valve you can. Remove the electrical connectors and retaining bolts. Reverse the steps to remove the Idle Control Valve while replacing the IAC gasket.
Idle Speed Control
1450A069
Q: How to adjust the minimum idle speed and replacing the Idle Control Valve (IAC motor) on Mitsubishi Galant?
A:
The minimum idle speed is set at the factory and usually does not need any adjustment in the normal operating conditions; nevertheless, should the throttle body be changed or any reason to suspect that there is a problem with the minimum idle speed, it is recommended that the vehicle be taken to a qualified automotive repair shop. The PCM varies engine idle speed by operating the Idle Control Valve, which is installed on the throttle body and regulates the quantity of air entering the engine by passing through the closed throttle valve, according to the load on the engine, like running the air conditioning or the automatic transaxle. Firstly, make sure that the ignition key is turned to the OFF position and take off the air intake duct. To the models between 1994 and 1998, unscrew throttle body, unscrew Idle Control Valve mounting screws, unscrew Idle Control Valve, then replace the old gasket with a new one, and screw Idle Control Valve back into its place. In models since 1999, de-electrify the electrical connector to the Idle Control Valve, loosen the screws, dismount the Idle Control Valve, change the old O-ring with a new one, and re-mount the Idle Control Valve, being careful to tighten the screws.