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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 10-17-2011
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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 10-17-2011
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Bump any ideas?
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Old 10-17-2011
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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 10-17-2011
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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 10-17-2011
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Never heard it, never want to hear it
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Old 10-17-2011
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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 10-17-2011
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Quote:
Originally Posted by 01RangerEdge View Post
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 10-17-2011
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I tried that...nothing from odd from mine.
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Old 10-17-2011
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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 10-17-2011
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Why would you do that?
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Old 10-17-2011
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Quote:
Originally Posted by Taylor View Post
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 10-17-2011
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Quote:
Originally Posted by 01RangerEdge View Post
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 10-17-2011
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I just turn to accessory if I want to listen to the radio
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Old 10-17-2011
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Quote:
Originally Posted by 01RangerEdge View Post
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 10-17-2011
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No idea what causes it... but mine does it too once in a while!
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Old 10-17-2011
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Odd, I went and tried and it didn't do it
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Old 10-17-2011
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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 10-17-2011
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Dave's truck: Questioning what we know about Ranger's since 2010.
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Old 10-17-2011
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Originally Posted by 01RangerEdge View Post
Dave's truck: Questioning what we know about Ranger's since 2010.
sig'd
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Old 10-17-2011
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Quote:
Originally Posted by Taylor View Post
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 10-17-2011
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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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  #22  
Old 10-17-2011
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Quote:
Originally Posted by 04RangerDave View Post
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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  #23  
Old 10-18-2011
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It is probably air rushing past the valves as the engine slows.
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  #24  
Old 10-18-2011
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Quote:
Originally Posted by Blhde View Post
It is probably air rushing past the valves as the engine slows.
That's what I thought.
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  #25  
Old 10-18-2011
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I can feel it with my hand over the intake inlet.
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