SoCal_Todd

Hi folks,

Here is a wierd bogging sound coming from the air intake box as the engine goes through about 1500 RPM. The truck is running fine, but the sound is annoying. Any ideas?

https://www.youtube.com/watch?v=Eojg...ature=youtu.be

Thanks Todd

SoCal_Todd

https://www.youtube.com/watch?v=Eojg...ature=youtu.be

PapaChulos4U

That sounds about normal. I have a cold air on my truck and it makes like a gurgling sound when I hit the throttle; I believe its the AFM is no longer muffled through the intake box and you can hear it through the filter. Have you noticed any power loss?

SoCal_Todd

I'm not seeing any power loss, just that throaty sound as I pass through about 1500 RPM. I never noticed it until I replaced my TPS recently.

Obmi

I am taking a wild guess here... Sounds like what i would imagine the air filter rattling would sound like. Could the air filter be loose or broken in side the box?

SoCal_Todd

I'll check that out

dark_fairytales

It is the Air injection port opening up to pump fresh air into the exhaust. It emissions stuff.

PapaChulos4U

Dark is right, and is what I was trying to say but not so well, haha. The vane in the AFM opens and balances out with fuel/exhaust, you can just hear it more without the filter box which would normally silence it quite a bit. As long as you get no CEL or power loss, you're fine.