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SportTrac Discussion
Engine & Drivetrain
Engine sometimes won`t start.
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<blockquote data-quote="Kevin Palmer" data-source="post: 905987" data-attributes="member: 54263"><p>May also be either the IAC (Idle Air Control) solenoid being dirty and not responding as it should. Or, a bad T/S (Temperature Sensor).</p><p></p><p></p><p></p><p>The ECM (the brain) receives the input from the T/S. If it determines it is a cold engine, it will have the IAC open a bit and allow for more air to come into the intake. When that happens, you get more fuel as well.</p><p></p><p></p><p></p><p>An easy test is, put you foot on the pedal and BARELY press on it, then try to start it. If it starts right up and keeps running,it is either the IAC or the sensor.</p><p></p><p></p><p></p><p>There is a project here at the site on how to clean the IAC..</p></blockquote><p></p>
[QUOTE="Kevin Palmer, post: 905987, member: 54263"] May also be either the IAC (Idle Air Control) solenoid being dirty and not responding as it should. Or, a bad T/S (Temperature Sensor). The ECM (the brain) receives the input from the T/S. If it determines it is a cold engine, it will have the IAC open a bit and allow for more air to come into the intake. When that happens, you get more fuel as well. An easy test is, put you foot on the pedal and BARELY press on it, then try to start it. If it starts right up and keeps running,it is either the IAC or the sensor. There is a project here at the site on how to clean the IAC.. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Engine sometimes won`t start.
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