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  #1  
Old 04-05-2010, 05:16 PM
Ruger Splash Ruger Splash is offline
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Default Odd hum when its hot outside

hi guys.. from time to time i get a loud hum from my engine when the temp is over 70 degrees out. I think its coming from the stock intake tube being old(170,000 miles). Has anyone had similar problems.. and is switching the intake a simple fix? Thank you in advance.
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  #2  
Old 04-05-2010, 05:46 PM
Fx4wannabe01 Fx4wannabe01 is offline
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Default Re: Odd hum when its hot outside

what engine? 4.0 OHV's have a little issue with exactly what you're discribing. Replace your throttle body gasket, MAF gasket, and anything that has a joint in the intake tube. If it still persists, replace upper manifold gaskets.
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  #3  
Old 04-05-2010, 05:50 PM
Ruger Splash Ruger Splash is offline
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Default Re: Odd hum when its hot outside

yeah sorry its a 4.0... when it starts to hum if i pop the hood and squeeze the intake tube the hum stops. Thanks for the heads up... I just ordered a new intake and throttle body tonight so we will see if that fixes it.
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  #4  
Old 04-06-2010, 06:05 PM
Ruger Splash Ruger Splash is offline
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Default Re: Odd hum when its hot outside

ok so it did it again as soon as i pulled into the driveway.. Opened the hood and the intake tube was vibrating pretty good. I decided to pull the old intake off and clean it out. The rubber is very flexible. Hopefully the new parts show up soon so i can see if it makes a difference.
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  #5  
Old 04-07-2010, 04:22 AM
drppdyllwrngr drppdyllwrngr is offline
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Default Re: Odd hum when its hot outside

it's the iac. it's located on the upper intake manifold, on the driver's side. it's a small sensor.
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  #6  
Old 04-08-2010, 04:11 AM
ninenineranger ninenineranger is offline
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Default Re: Odd hum when its hot outside

Yup ur Intake Air Contro (lAC)...
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  #7  
Old 04-08-2010, 05:11 AM
cwc ranger cwc ranger is offline
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Default Re: Odd hum when its hot outside

See i had that two on my cold air intake but it came from the filter area, so i covered the body holes that are there by the filter with duck tape and it stopped for the most part. Idk what else it could be.
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  #8  
Old 04-10-2010, 07:31 PM
Edge4.0 Edge4.0 is offline
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Default Re: Odd hum when its hot outside

my moms explorer was doing the same thing, i cleaned the iac and throttle body and that fixed it
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  #9  
Old 07-25-2013, 09:31 AM
bigfisher bigfisher is offline
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Bumping a 3 year old thread....

But i'm having an odd hum from my engine bay. It is coming from the intake and I want to make sure its the IAC before I start replacing parts.
First video is while driving and the second one is when I was leaving a friends house.
http://i1056.photobucket.com/albums/...ps191c6797.mp4
http://i1056.photobucket.com/albums/...ps5d83b0ca.mp4

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Quote:
Originally Posted by 2004 fx4 level II
fuckin Nissan shhhiitttttttttt!!!!!!!!!!!!!!!!!!
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  #10  
Old 07-25-2013, 03:37 PM
bigfisher bigfisher is offline
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Anyone?

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Quote:
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fuckin Nissan shhhiitttttttttt!!!!!!!!!!!!!!!!!!
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  #11  
Old 07-25-2013, 11:00 PM
Str8fan Str8fan is offline
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Default Re: Odd hum when its hot outside

Quote:
Originally Posted by bigfisher View Post
Anyone?

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I had that problem exactly three years ago and my mechanic fixed by replacing a belt.
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  #12  
Old 07-26-2013, 07:52 AM
bigfisher bigfisher is offline
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Quote:
Originally Posted by Str8fan View Post

I had that problem exactly three years ago and my mechanic fixed by replacing a belt.
The serpentine belt?

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Quote:
Originally Posted by 2004 fx4 level II
fuckin Nissan shhhiitttttttttt!!!!!!!!!!!!!!!!!!
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  #13  
Old 07-26-2013, 09:18 AM
Str8fan Str8fan is offline
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Default Re: Odd hum when its hot outside

Quote:
Originally Posted by bigfisher View Post
The serpentine belt?

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Yeah it hasn't done it again since being replaced.
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  #14  
Old 07-26-2013, 09:33 AM
bigfisher bigfisher is offline
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Alright. Hopefully its making the noise when i get to the ford dealer

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2013 F150 FX4 5.0 - Sold
1998 Jeep Wrangler TJ 4.0 5spd - Sold
2001 Mustang Bullitt - Sold
2005 Level II - Sold
2001 Integra GSR - Sold
1999 XLT - May 2013 TOTM - Totaled

Quote:
Originally Posted by 2004 fx4 level II
fuckin Nissan shhhiitttttttttt!!!!!!!!!!!!!!!!!!
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  #15  
Old 07-26-2013, 09:55 AM
RagerTom RagerTom is offline
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Default Re: Odd hum when its hot outside

Did you clean your iac
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adamantium tamponicus!
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