My '98 Camry makes a high pitched whistle from cabin air vent, and intensifies as fan is turned higher. It primarily is when air is directed straight at front passengers, and sounds like something is caught in the vent. Any ideas how to proceed to with seeing if some debris is caught in the cabin air system? I do not seen anything when just looking in vents on front and top of dashboard.
Blower motor might be going out. worn out bearings.
SOURCE: 2000 Camry LE bad odor from a/c heater cabin vents
Possible the smell is coming from the bacteria living on your ac evapourator. You can buy a spray for this that you set off inside the vehicle. Follow the instructions on the tin.
SOURCE: No hot air at rear vents on 98 Toyota Sienna CE
Possible that heatcore is going or hose from heater is leaking or falling off.
You can go to www.autozone.com and see a full free online repair manual for your van
SOURCE: A/C blows from defrost and floor vents, nothing from dash vents.
the switch where you turn it to blowing at your head is probably out. you will need to replace the switch control where your defrost, foot, head etc. what make, model, year is your vehicle?
SOURCE: Passenger ac vent cools and driver side ac vent do not
It sounds like a heater blend door issue inside the heater box that is actually not closing all the way to allow either cool or hot air or visa/versa.
I would say the blend door actuator is not working right. It directs the flow in the vent system.
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