Question about 1997 Mitsubishi Mirage
The IACV on my car is three screws and a wire harness plug . It may be harder to find it than it is to replace it. On the Lancer, I replaced it on, I did have to take the rubber tube from the air cleaner to the throttle body off to get access. Work carefully and don't drop your screws.
Posted on Sep 05, 2010
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Posted on Jan 02, 2017
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The Idle Air Control (IAC) valve controls the amount of air that bypasses the throttle valve, which controls the engine idle speed. The IAC valve consists of windings, an armature, a return spring, and a rotary slide. The engine control module (ECM) pulses the voltage to the winding, the opposing forces on the armature by the return spring cause it to maintain a fixed position, adjusting the amount of bypass air to maintain the correct idle speed.
Removal & Installation
Checking Idle Air Control Valve (IAC) Triggering
Fig. IAC Connector
Fig. Showing the IAC Valve
WARNING Do NOT check for ease of movement by prying on the rotary slide with a screwdriver or other tools that could cause scratching or other damage.
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Buy a can of throttle valve cleaner (it is made by CRC) from the local auto parts store, spray it into the air intake through the throttle body of the engine until you have used about half the can, you will need to hold the idle up while you do this, it will try to stall, after this shut the engine down and disconnect the Negative (-) battery cable for 5 minutes. The intake is now clean, if you continue to have the idle speed control problems you may need to seek the help of a professional.
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