This is topic Humming noise? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 532Fastback (Member # 1482) on :
 
OK a couple of weeks ago my 1996 4.0L Explorer started making a humming noise i thought it was just the EGR valve or something, it didn't run any different or throw any codes. Well today i put a K&N charger kit on it and the humming is HELLA loud now its coming from the Mass Air. What the hell could it be thats making it do that? Should i rotate the MAF? i have it in the upright position right now. Not sure what stock position is for it.
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Posted by BlueOvalRacing (Member # 1531) on :
 
Probably the IAC valve
 
Posted by 532Fastback (Member # 1482) on :
 
quote:
Originally posted by BlueOvalRacing:
Probably the IAC valve
its really loud if you put your ear next to the connector for the MAF.
 
Posted by venommS (Member # 7837) on :
 
Maybe the smog pump is dead, that happened to my 96 cobra.
 
Posted by 302 DROP (Member # 1323) on :
 
fan clutch can make noises like that. im assuming you dont have an electric fan
 
Posted by BlueOvalRacing (Member # 1531) on :
 
If it goes away when you open the throttle, it's the IAC
 
Posted by 532Fastback (Member # 1482) on :
 
quote:
Originally posted by BlueOvalRacing:
If it goes away when you open the throttle, it's the IAC
full throttle or partial? i noticed it does go away when i am going from a stop but if i am cruising i can kinda hear it.
 
Posted by BlueOvalRacing (Member # 1531) on :
 
Either way. The IAC only operates to control idle speed when the throttle plate is shut. The noise is a very common problem with all Fords and will resonate through the air inlet to the filter.
 
Posted by 532Fastback (Member # 1482) on :
 
quote:
Originally posted by BlueOvalRacing:
Either way. The IAC only operates to control idle speed when the throttle plate is shut. The noise is a very common problem with all Fords and will resonate through the air inlet to the filter.
oh ok so if it gets really annoying i can just replace the iac and it'll be gone for a while?
 




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