relwar

help!! after the a/c has been on for awhile , it seems--- the air filter
unit has this serious humming coming out of it. when i disconnect the
housing for the air filter, the noise seems to come from there. i notice
there is some sort of device mounted (sensor) on inside of housing--- can
this be defective??? thanks for any help!!

johanb

try disconnecting iac sensor, it will stall but see if the humming noise
stops


"relwar" <m-angus@sbcglobal.net> wrote in message
news:658e6f0e74ddd8323ea014763b774094@localhost.talkaboutautos.com...
> help!! after the a/c has been on for awhile , it seems--- the air filter
> unit has this serious humming coming out of it. when i disconnect the
> housing for the air filter, the noise seems to come from there. i notice
> there is some sort of device mounted (sensor) on inside of housing--- can
> this be defective??? thanks for any help!!
>

Just_Steve

I believe what johanb means is, while the engine is running and "humming"
unplug the IAC (idle air control) valve - you'll probably have to keep the
throttle open slightly to keep the engine running, which you will want to
do, since I assume the humming doesn't occur when the engine isn't running.
If the humming noise stops (when the IAC is unplugged and the engine is
running) it's likely the problem is the IAC valve itself. The humming noise
is a common symptom of IAC failure (another being the engine won't start or
idle without pressing the accelerator, especially when the weather is cold).
It was an easy fix on my '96, I think the '95 are pretty similar. When mine
started doing this it was usually only at idle - the noise wasn't noticeable
while driving. Sounded kind of like a small horn in the engine compartment,
many describe it as a moose call. There's a good thread about it (with
pics) at the "Serious Explorations" message board
(http://www.explorerforum.com/forums/...d=84220&highli
ght=cleaning+IAC)

Steve

"johanb" <ollieb1oREMOVE@THIScs.com> wrote in message
news:8InQe.37$h01.7472@news.uswest.net...
> try disconnecting iac sensor, it will stall but see if the humming noise
> stops
>
>

Smoothshades

Have it takin to the Ford Garage... There is a recall on a piece that has
the same effect... not all Explorors that year were covered, but they will
check the VIN # & be able to tell you. Good luck! I had the same problem
on my 96... My VIN # wasn't covered just my luck... Better luck to you!