Hooting Noise
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Junior Member
Joined: Jun 2005
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Hooting Noise
Hi, I have a 2004 F150, and from the first day I picked up the truck it has
a hooting noise. This happens every time I let off the gas. I have had it back to the dealer 12 times for this and they have replaced the alternator, intake,rear end and nothing has helped. Has anyone else had this problem?
a hooting noise. This happens every time I let off the gas. I have had it back to the dealer 12 times for this and they have replaced the alternator, intake,rear end and nothing has helped. Has anyone else had this problem?
Junior Member
Joined: Jun 2005
Posts: 5
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From: Texas
Sounds like you may have a problem with the idle air control valve. They are known to make noises that may sound like a hoot. When you let your foot off the gas, the throttle valve closes and air is then directed through this IAC valve. The IAC valve keeps the RPMs where the engine will not stall. The noise comes from the air passing through this valve much like a whistle. However, the noise you hear is not normal. Replacing the IAC valve usually takes care of the problem.
Technical Article Contributor
Joined: May 2004
Posts: 6,509
Likes: 6
From: Georgia on my mind...
Originally Posted by axlebender
Sounds like you may have a problem with the idle air control valve. They are known to make noises that may sound like a hoot. When you let your foot off the gas, the throttle valve closes and air is then directed through this IAC valve. The IAC valve keeps the RPMs where the engine will not stall. The noise comes from the air passing through this valve much like a whistle. However, the noise you hear is not normal. Replacing the IAC valve usually takes care of the problem.
