Loud Humming noise with A/C on & Idling

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lmarcus

08-21-2007, 08:45 PM

My 99 Ford Explorer XLT's A/C makes a loud humming noise when the A/C is on and engine at idle. The air seems to stay fairly cold. It almost sounds like it is coming from the air filter. It seems like pressure is building up, but I am lost trying to figure it out.

rivguy

08-21-2007, 09:22 PM

sounds like the boot in the iac has torn. this gives a hoot/hum noise from the air filter.

lmarcus

08-22-2007, 04:59 PM

Thanks for the advise.

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