Re: Engine humm when air temp. is worm or hot
The hum (sometimes described as a moan) is *usually* due to the IAC
resonating. Replacing the IAC has cured these.
"Jarred Jewett via CarKB.com" <forum@nospam.CarKB.com> wrote in message
> I have a 98 ford explorer sport. When the temp. is warm outside the
> starts to make a humm. It sounds like it is comming from the intake. I
> was wondering what other people think it might be. I think it might be
> intake air flow sensor. No codes and no lights.