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This seems to be a common complaint on this car. Though I did not find anything with my visual inspection of the IAC valve, a new IAC valve or solenoid did fix this issue.
View More About This Video: Mercury Cougar moaning, humming, howling sound at idle (bad IAC valve)
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What causes a surging idle speed on a Honda or Acura?
View More About This Video: Honda-Acura Surging Idle Speed (case study)
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Here, we’re covering an idle speed issue on a Grand Marquis.
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In this video I’ll show you how to use scan data and service information to diagnose a P0106 MAP/BARO Pressure Circuit Out of Range code on a 2005 Chevrolet Trailblazer.
View More About This Video: MAP Sensor Code P0106 caused by a dirty throttle body
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In this video I will show you how to use Idle Air Control (IAC) position to identify a vacuum leak.
View More About This Video: P0507 Idle Control System (RPM Too High) - vacuum leak - GM
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In this part 2 video we will focus on testing and cleaning the idle air control motor.
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How to test an idle control valve (2-wire solenoid type) using a lab scope.
View More About This Video: How to test an idle air control valve (IAC) using a Picoscope - Ford