Hello Ford truck gurus:

Quick question for you. I am fairly certain that I need to replace my IAC in my 2003 Explorer Sport Trac (4x4 4L SOHC) due to some slight engine shutters and decrease in RPMs at idle. I attempted to clean the IAC sometime earlier in the year, but it never really solved the problem (lots of carbon buildup inside). While driving home last night, I heard a high-pitched constant whistle for about five seconds. The noise went away when I let off of the accelerator. Is there any way that the noise I heard is related to the IAC? Just thought I would throw this question out there and see if anyone had some advice.

Happy holidays

Andy

 

More Than Likely, Replace The Iac And See If That Doesn''t Fix The Problem

 

Yep, the intermittent high pitch hum is associated with a bad IAC.

 

Next question...does anyone know of an auto store where I can buy an IAC? I am in southern Ohio, and it doesn't appear that AutoZone, NAPA or Advance Auto carry the part. These are about the only three parts stores in my area. I did find an IAC on RockAuto's website, identified as Motorcraft Part # CX2065, for $45.79. Any advice as to other stores that may carry the part, or whether the part listed on RockAuto's website is the right one will be greatly appreciated.