rear makes a clicking sound when the temp. knob (both,overhead knob or back seat knob) My 2003 Ford Expedition is making an annoying noise from the right rear of the vehicle .
My car has an automatic transmission.
The clicking noise coming from the rear a/c unit in the right rear of your vehicle is most likely the temperature blend door actuator has internal circuit problem. You should have a mechanic like one from YourMechanic come and check the rear a/c blend door actuator and replace actuator. The rear internal panel will need to be removed for access to the a/c unit to check and replace the actuator.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%