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Old Dec 31, 2005 | 01:43 AM
  #1  
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johnstechhelp
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Question 4.6L Noise...

I have this noise only at partial throttle, rpm change makes no difference...sounds kinds of like a penny being dragged across a table, really like a whisper, if i turn the air or radio on I can't hear, but not because it isn't there, it is just that quiet...I was just wondering what this may be or if anyone has ever had this "problem", I did a search on this forum and came up with nothing...BTW, it has a new EGR valve on it...It went bad and was making the same type of noise, only A LOT Louder!

EDIT: I can turn the speed control on and set it and the noise mysteriously goes away...

John

2005 F150 SuperCrew 4.6L V8
 

Last edited by johnstechhelp; Dec 31, 2005 at 01:45 AM.
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Old Jan 1, 2006 | 04:53 PM
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LxMan1
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Sounds like a possible vacuum leak somewhere. You might check the PCV hose elbows.
 
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Old Jan 13, 2006 | 04:13 PM
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johnstechhelp
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sorry i haven't got back to you, been unable to check under the hood...

i checked it out, and the pcv valve almost seems like it is loose (give is about 1/16ths of an inch), there is also oil around the outside of it, where the elbow connects to it...
 
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