Q: Problem with AC/heater - 2005 Ford Explorer

asked by on November 11, 2016

i have a problem with my ac/heater system. I turn on ac/heater to blow through the air vents and it blows out the defrost vents (near the windshield). Also the vents in the 2nd and 3rd seater only blow cold air which will be a problem come winter. Please let me know what the problem is if possible. It blows strong air out the vents but then the front air vents switch straight to the defrost vents after a couple of minutes and stays blowing ac/heater through the defrost vents. Also I hear a a ticking noise from the back of the car when I turn the back vents on sounding as if the switch back ther for ac/heater is going out.

My car has 140000 miles.
My car has an automatic transmission.

Heater is not working Inspection $94.99 - $114.99 Get a Quote

Hello. The problems you describe with the front system may either be a faulty control switch or faulty vacuum motors for the air blend doors. The problem in the rear is likely the rear heater control valve, which regulates the flow of hot coolant to the rear heater core and air duct system. The clicking noise may be a broken vacuum motor for that valve (integrated in the valve).

I would recommend having a certified mechanic, such as one from YourMechanic, come to your location to perform an inspection of the heater and suggest the needed repairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I turn on Sport mode?
Sport mode controls the speed of the engine and the shifts of the transmission such that your car has a sportier feel, and more closely resembles a track car. To turn on Sport mode, Press the Sport Mode switch. An...
ABS warning lights
It seems as if your vehicle may be having problems with the voltage in the electrical system. Have the battery terminals inspected for cleanliness (https://www.yourmechanic.com/article/how-to-clean-battery-terminal-connections-on-a-car) and integrity, and then test the battery (https://www.yourmechanic.com/article/how-to-check-a-car-battery) and charging systems. A failing alternator assembly,...
Reset CHANGE OIL indicator light
Push "Setup" on the Windstar's dash control pad. The screen next to the speedometer will read "Press Reset for Sys Check." Press "Reset" on the control pad. The display will now read "Oil Life % Hold Reset New." Hold "Reset"...
Is there a device to fold and unfold a passenger side mirror from the driver's seat?
Hello. The power folding mirror option is available on the Sienna Limited and Limited Premium models for 2016. Perhaps your mirrors can be upgraded with components from either of these models. Not aware of any aftermarket vendor (https://www.yourmechanic.com/article/all-about-aftermarket-parts) for this...
My car is not cranking - 1999 Jeep Grand Cherokee
Hi there. If you've recently replaced the battery, crank sensor, and the starter, and the engine won't crank over, then it's possible that you might have seized up the engine or you have a broken timing chain. The best way...
Car shakes when I press accelerator
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
Brand new car has problem starting 2016 Nissan Sentra
Hi - the "hard start when hot (https://www.yourmechanic.com/question/car-won-t-start-on-a-hot-day-by-wenceslao-n)" sounds like a weak starter solenoid - unusual for a new car. "Heat soak" the transfer of heat after a vehicle has been driven, can sometimes cause weak electrical components, like the...
I scanned my mercedes ML 250 CDI 4Matic W166 with icarsoft MB 2 scanner. Its showing trouble code U144f00. What does it mean ?
The fault being reported is within a Controller Area Network (CAN) function (wiring or device) but the code itself is generic. According to MB, the particular scanner that you are using will have an accompanying description of the code as...
Replaced right side shock absorber know tire rubs lateral arm 2006 Ford five hundred
To determine the exact fault, as well as why this has occurred, the vehicle will have to be inspected first hand. There are too many possibilities, and too many components to inspect, to speculate without seeing exactly what you have....

Related articles

A Buyer’s Guide to the 2012 Ford Expedition
The The 2012 Ford Expedition has ample room for passengers and cargo, while still being able to tow anywhere from 8,900 to 9,200 pounds. The Expedition has two-tone exterior packages making it stand out against its competitors. Along with that,...
2012 Nissan Rogue vs. 2012 Ford Escape: Which One Should I Buy?
Sport Utility Vehicles (SUVs) use the chassis of a truck to provide superior structure, with a larger size and often poor gas mileage. While that isn’t always true, SUVs have a raised ground clearance and are generally meant to haul...
The Best Used Cars to Buy If You Love Road Trips
If If you love to travel, comfort is very important in a vehicle. You want a nice, quiet ride, comfortable seating, and enough room. We have evaluated several used vehicles, and narrowed our favorite road trip vehicles down to the...