'05 F-150 Heater not working
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Junior Member
Joined: Oct 2014
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'05 F-150 Heater not working
Now that the days are getting cooler here in NoVA I noticed that my heater isn't working properly no matter how high I turn the temperature up...still blowing cool air. Any thoughts on what it could be?
1) Checked Engine Running Temp: Running in normal range
2) Cycled air through floor, split, and defrost vents: Air cycled
3) Ambient Temperature Gauge is off: saying 130 F when outside temperature is 48 F (could this be the problem?)
4) Checked coolant level: Full
When it was summer the AC worked fine but now that it is getting cooler the heater isn't working.
Thanks.
1) Checked Engine Running Temp: Running in normal range
2) Cycled air through floor, split, and defrost vents: Air cycled
3) Ambient Temperature Gauge is off: saying 130 F when outside temperature is 48 F (could this be the problem?)
4) Checked coolant level: Full
When it was summer the AC worked fine but now that it is getting cooler the heater isn't working.
Thanks.
Senior Member
Joined: Dec 2006
Posts: 43,539
Likes: 818
From: Joplin MO
If you checked the running temp with the dash gauge, don't believe it. Use an infrared thermometer on the thermostat housing. You may need a new thermostat.
It's possible the heater core is clogged - feel the inlet and outlet hoses, they should both be hot. If the inlet is hot and the outlet isn't, it's blocked somewhere.
Possibly a blend door issue?
It's possible the heater core is clogged - feel the inlet and outlet hoses, they should both be hot. If the inlet is hot and the outlet isn't, it's blocked somewhere.
Possibly a blend door issue?