humming sound from intake manifold

2002 FORD F-250
200,000 MILES
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TODD ARNOLD
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I have a 2002 ford f250 with a 5.8 liter engine it has almost 200000 miles and it runs great. there is a humming sound coming from the intake breather area. I have replaced the filter and looked for anything inside the tube and it is clean. A friend told me it could be the idle air motor?

I have changed the filter and cleaned the entire intake assemble, and it still makes the sound sometimes.
Nov 17, 2011 at 5:48 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Try cleaning out the idle air control valve and PCV valve-and see what happens
Nov 17, 2011 at 6:26 PM
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