Question about 2004 Ford Taurus
I just replaced the idle air control on my 2004 Ford Taurus, and when I started the car, the engine is racing to almost 3000 RPM's what can I do? I unhooked the battery to see if the computer would reset, but nothing so I put the old one back on for now.
Posted on Jun 21, 2011
By the throttle butterfly their is a steeper motor or a valve of some description but i think this vehicle has the standard one fitted and this has four wirs running to the plug ,two wires are earth and two are the feeds ,so to increase idle current is applied to one pair of wires and to lower ide current is applied to other two wires ,its a 12v feed which you should read as the idles goes up and the same on the other pair of wires when idle goes down the power runs a 12v DC motor which screws in or out ,you could run a bit of twin flex from battery and touch it to the connections to check its operation
Posted on Mar 18, 2011
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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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