heater problems on 2011 f-150

Asked by Oct 12, 2015 at 10:02 AM about the 2011 Ford F-150 Lariat SuperCrew 4WD

Question type: Maintenance & Repair

I can to work this morning with the temp control on auto and the setting for both sides on 75. but it was blowing cold air. i moved the temp to 78 with the same results. by the time i got to work it was somewhat warmer but not like normal. could this be a thermostat stuck open?

9 Answers


is it leaking antifreeze on the pass side on turns

2 out of 2 people think this is helpful.
Best Answer

How cold was it outside and how long did you drive to work? Did you have the truck last winter? If it's not that long of a drive too work then I would leave the temp control on Manual

1 out of 1 people think this is helpful.

No leaks. The temp outside this am was 52 and i drive about 7 miles to work.

no leaks. the outside temp was 52 and i drive about 7 miles to work


If the coolant is full, run it at 2000 rpm for 2 min. Then use a thermometer from the kitchen to observe coolant temp. T- stat opens at 192 deg F. If that is above, then the controls and actuators in the climate control may need put through their capabilities, use a therm for duct temp. suspect temp blend door control issue. Without knowledge of the system options in use, can send you to perf. test them and get any and all symptoms and description of display, is it auto temp? Electronic auto temp? or manual cable operated or what ? The blend door can actuate ? or is obstructed? does the opposite of what it says? or what is the situation there? somwe systems can be self tested, some can be read for codes, others just simply have a pen go down the defroster? or the blend actuator or cable, what have you? unsure for 2011, but Ford is infamous as well as writing pen setter downers.

1 out of 1 people think this is helpful.

For awhile the inside temp senders were an issue, others had communication with scan tool issues, so if you dont have a simple one, they get more experience with them in the service drive at the Ford garage. prob tell you likely cause? or basic diag? tests and inspections? simplify, but after learning what components, ya kno?

1 out of 1 people think this is helpful.

I have the same problem with my 2011 F150, and have noticed in the last week or so that the electric engine fan has been running more than usual, even in the recent colder weather (below freezing at night, 40-50F during the day). Could this be related to the heater blowing cold air?

3 out of 3 people think this is helpful.

What were your results for all the afore mentioned questions? If your vehicle does not overheat, have low coolant, and you see no signs for a cause, there is no reason not to call for a service appointment. The person answers, you say, service advisor, you relate the concern, get an appointment. They respond. They may need your VIN to see what your shortlist is for causes that would not seem obvious necessarily.

I had loss of heat with my 2011 F150. Was first winter in cold weather. I noticed the electric engine fan running once or twice after the heat failed. I checked the coolant level and it was low. The heater hoses were just barely warm. Topped it off, one gallon, and now I have heat again. The heater hoses are hot. The blend door still knocks but I don't care as I have both a/c and heat again.

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