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Intake Noise After Shut Down

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Old Oct 17, 2011
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Intake Noise After Shut Down
I have had this noise after shut down since i got the truck. Cant diagnose it so ive just left it as is seems like nothing major. Does anyones do this. Never heard any other ranger do it except one 2.3.

 
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Old Oct 17, 2011
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Bump any ideas?
 
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Old Oct 17, 2011
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mine does that if i turn it off and turn the key right back on...nothing to worry about
 
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Old Oct 17, 2011
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Dave must be drinking in the garage again. lol.
I've heard it on many cars, it'll be alrite. i believe its the Fan Clutch.
 
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Old Oct 17, 2011
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Never heard it, never want to hear it
 
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Old Oct 17, 2011
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I've never heard my truck do that. But I've never been standing over it with the hood open when I shut it off either
 
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Old Oct 17, 2011
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Originally Posted by 01RangerEdge
I've never heard my truck do that. But I've never been standing over it with the hood open when I shut it off either
it will do it if you start it, shut if off, and turn the ignition to KOEO and youll hear the noise lol
 
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Old Oct 17, 2011
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I tried that...nothing from odd from mine.
 
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Old Oct 17, 2011
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If I shut off my truck, then immediately turn the key to the "on" position without cranking it, then it will make that sound.
 
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Old Oct 17, 2011
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Why would you do that?
 
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Old Oct 17, 2011
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Originally Posted by Taylor
If I shut off my truck, then immediately turn the key to the "on" position without cranking it, then it will make that sound.
same here
 
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Old Oct 17, 2011
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Originally Posted by 01RangerEdge
Why would you do that?
If I am parking somewhere, or stopping to shut off the truck for any reason. If I want to listen to the radio or a cd after I have shut the truck off then I have to turn the key.
 
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Old Oct 17, 2011
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I just turn to accessory if I want to listen to the radio
 
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Old Oct 17, 2011
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Originally Posted by 01RangerEdge
I just turn to accessory if I want to listen to the radio
And its in the accessory spot that the truck will make that noise. I dont know if it is the "on" position exactly or not, I was just saying that.
 
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Old Oct 17, 2011
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No idea what causes it... but mine does it too once in a while!
 
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Old Oct 17, 2011
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Odd, I went and tried and it didn't do it
 
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Old Oct 17, 2011
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Usualy when it happens to me, my truck would have to be running for a while. If I go and crank it, then shut it off it wont happen.

Strange. Now im super curious as to what it is.
 
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Old Oct 17, 2011
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Dave's truck: Questioning what we know about Ranger's since 2010.
 
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Old Oct 17, 2011
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Originally Posted by 01RangerEdge
Dave's truck: Questioning what we know about Ranger's since 2010.
sig'd
 
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Old Oct 17, 2011
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Originally Posted by Taylor
Usualy when it happens to me, my truck would have to be running for a while. If I go and crank it, then shut it off it wont happen.

Strange. Now im super curious as to what it is.
I asked my old man. After i played the video for him, 30 some odd times.
He thinks its a pulley, or the fan clutch. Something thats being stopped when the rest of the belt stops turning.
 
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Old Oct 17, 2011
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My dads 4.0 makes the same noise when you shut it off. It is vacuum being released from somewhere, whether it be the IAC or the Vapor Management Valve for the EVAP system.
 
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Old Oct 17, 2011
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Originally Posted by 04RangerDave
I have had this noise after shut down since i got the truck. Cant diagnose it so ive just left it as is seems like nothing major. Does anyones do this. Never heard any other ranger do it except one 2.3.

http://www.youtube.com/watch?v=bVutP...el_video_title
Any chance the sound is coming from the air inlet on the air filter box? Cuz if so, I know what it is, and it's not a prob.
 
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Old Oct 18, 2011
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It is probably air rushing past the valves as the engine slows.
 
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Old Oct 18, 2011
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Originally Posted by Blhde
It is probably air rushing past the valves as the engine slows.
That's what I thought.
 
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Old Oct 18, 2011
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I can feel it with my hand over the intake inlet.
 
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