Weird Engine Humming, Attached Video Clip w/ Sound - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-08-2006
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Weird Engine Humming, Attached Video Clip w/ Sound

Hey guys. Lately I've been experiencing a rather annoying humming noise during idle. It is located right by the air intake. It stops when I'm not idling, but it is pretty loud and annoying, something that I'm sure isn't right. There is no CEL, so it's probably nothing major, just annoying. I am running a Cone Filter, but it doesn't make a difference if it's on or off for the noise. I took it off and made this video clip in hopes that someone might be able to recognize it. It doesn't seem to matter if the AC is on or not. Here's the video. Let me know if you've got any questions. http://media.putfile.com/Engine-Noise-45 (File size is slightly over 5MB)
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Old 06-08-2006
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Don't even need to here it, I can tell you exactly what it is.

IAC Valve (pretty sure thats what they call the dumb thing). They are 40 bucks from Autozone.

Look on the intake manifold, you will see a silver thing attached to it with two bolts and a clip, thats it.

I'm on my third one...lol
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  #3  
Old 06-08-2006
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Don't happen to have a part number do ya? Looks like I'll be getting one.
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Old 06-08-2006
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Your in luck, I found my spare..

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Old 06-08-2006
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Wow! I have the same problem with mine. And in fact, it was making that nosie today. Stops after idle...Now I know what it is. Thanks.
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Old 06-08-2006
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Awesome. Now that I know what I was looking for, I did find it in my service manual. The Ford part # is 9F715 in case anyone was wondering. Thanks for the help.
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Old 06-08-2006
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If you want, you can take the IAC off and clean with with brake cleaner (Non-chlorinated), let it dry, and re-install. See if that fixes the issue.
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Old 06-08-2006
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Normally the humming noise means its physically worn out(the part that slides).. cleaning is at best a temporary fix.
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Old 06-09-2006
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Quote:
Originally Posted by Rand
Normally the humming noise means its physically worn out(the part that slides).. cleaning is at best a temporary fix.
Yes, but if the noise goes away, he knows that's the problem and can fix it.
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Old 06-09-2006
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Quote:
Originally Posted by olsonk_89
Awesome. Now that I know what I was looking for, I did find it in my service manual. The Ford part # is 9F715 in case anyone was wondering. Thanks for the help.
thanks for the PN, mine just started doing this too, ill check the part number to see if its the same as the one i have layin around
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  #11  
Old 06-09-2006
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my truck does it to only when its hot. Guess i need to replace too huh....lol
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  #12  
Old 06-09-2006
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I unplugged it, and the noise stopped, but of course it didn't idle very well. I went ahead and ordered one from NAPA, it will be here Monday. I'm sure it will fix me up.
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Old 06-11-2006
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Sweet. I got one from Auto Zone Friday and put it on. Haven't heard the noise since. That should fix you right up.
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  #14  
Old 06-18-2006
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I got mine ordered, and it's in up at the local NAPA, I was just out of town all last week, so I'll pick mine up tomorrow. I'm ready for that annoying whine to end.
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  #15  
Old 06-25-2006
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Problem solved. Thanks for the help guys!
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  #16  
Old 06-25-2006
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Mines solved too....$75 later :-/ But it had to be done to get the humming to go away and the hard starting
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