3 times so far from a cold start I hear a very loud sound coming from the intake manifold which transmits through the air intake.
I tried to record it with my iPad yet when playing back the video I cannot hear it , but in real time when I am in front or in the car the noise drowns out everything and is very annoying.
I can only describe the sound of the noise like a asthmatic air horn LOL once it warms up the noise goes away like someone turned off a switch.
My thought is a dirty Idle air control valve or very dirty throttle body.
The noise does not last long enough to do any real investigation yet I have had time to unclip the air cleaner lid to pull it away from the air cleaner and you can tell the noise is coming from the intake through the air inlet tube which amplifies it.
Has anyone with a 4.6 had a noise like this? any suggestions? I plan on looking into cleaning the IAC and throttle body but I am unsure if the throttle body has the coating on it that is not supposed to be cleaned.
I will look up on Mitchell to see what kind of service I can get away with for the throttle body and IAC motor.
I tried to record it with my iPad yet when playing back the video I cannot hear it , but in real time when I am in front or in the car the noise drowns out everything and is very annoying.
I can only describe the sound of the noise like a asthmatic air horn LOL once it warms up the noise goes away like someone turned off a switch.
My thought is a dirty Idle air control valve or very dirty throttle body.
The noise does not last long enough to do any real investigation yet I have had time to unclip the air cleaner lid to pull it away from the air cleaner and you can tell the noise is coming from the intake through the air inlet tube which amplifies it.
Has anyone with a 4.6 had a noise like this? any suggestions? I plan on looking into cleaning the IAC and throttle body but I am unsure if the throttle body has the coating on it that is not supposed to be cleaned.
I will look up on Mitchell to see what kind of service I can get away with for the throttle body and IAC motor.
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