My toyota solara 2001 4cyl makes a loud humming noise when I turn on the air.

Hi. I believe this humming noise is coming from the dash. It's so loud inside of the car and no noise from the engine. Thank you.

if its only happening when you turn on the fan,it is most likely to be the bearing in the blower motor,or something could have fallen in or against the wheel.either way,the fan motor will have to removed to find the cause.post findings

Hi. The noise only happens when and if I turn on the fan. If it is the bearings in the fan motor blower, is that an experience cost to repair? Thanks for all your help.

you would replace the blower motor unit,it comes with the fan wheel on it.complete unit.thats at autozone,lifetime warranty.you may find one cheaper at,napa,adv,orly. Fits Your Vehicle Everco/A/C Heater Blower Motor Price: $80.99 plus tax.thats in my zip code.yours may be the same,more,or less. Part Number: 35202 Warranty: Limited Lifetime