Detail: 2009 F250 Super Duty 4x4. 5.4L. Very little heat. Upper & Lower hoses are hot. Eng. Temp is normal. Blower motor blows at all speeds. Vent, Floor, Defrost selector works. Temp selector doesn't change temp - it's always blows low 60's regardless if temp is set to hot or cold. Any ideas?
Solution: Temp blend door actuator possibly . , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , The HPOP (high pressure oil pump) is right under the filter housing. There are 2 lines that distribute the oil to the cylinder heads. The o-rings on those fittings go out. Kit is available from Ford or International. You will need a special wrench to get to the fittings though. , You probably have a vacuum leak on the passenger side. its a small plastic hose some times they come unpluged from the engine. or brake. , it should be under dash next to gas peddle on left end of heater box not that hard 2 screws and a plug. its called heater blend door actuator. , THe blend door seems to be stuck. When you change settings from defrost to floor air or, vent, the blend door opens and closes directing the air to the place you want it to go to. I have had some success spraying a lubricating oil such as WD40 under the dash on the blend door. You need to get under the dash with a flashlight to locate it. It looks like a flap. Spray it with a couple of shots of the WD40. Go easy on the spraying as you may be inhaling the fumes. Keep the doors and windows open to minimize the fumes. Wait about 1/2 hour and try the A/C functions. (defrost, floor, vent air) ,