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<blockquote data-quote="Toby" data-source="post: 239923" data-attributes="member: 1509">So I thought I would share my mechanical experience with one of my pickups not heating...is a 2005 Ford F150 Lariat with the 5.4L V8.&nbsp; Just started this winter.&nbsp; Antifreeze level was good, thermostat was good, blend door was functioning.&nbsp; Most guessed heater core.&nbsp; I did some research online and decided that it wasn't the heater core because the only thing I have done since last winter was add a touch of antifreeze.&nbsp; So what I did was replace the water pump, and while I had everything off in the front I replaced the thermostat as well, the thermostat was working correctly but hey it was only $9.&nbsp; I drained all of the antifreeze as well.&nbsp; Then I put everything back together and then bled the coolant line as the truck was running.&nbsp; Low and behold I no longer have a problem.&nbsp; Truck has about 174K on it and the water pump was original.&nbsp; Just though I would share this little trick because the winter usually brings out the worst in our vehicles.&nbsp; Hope this helps someone!Toby</blockquote>

[QUOTE="Toby, post: 239923, member: 1509"] So I thought I would share my mechanical experience with one of my pickups not heating...is a 2005 Ford F150 Lariat with the 5.4L V8. Just started this winter. Antifreeze level was good, thermostat was good, blend door was functioning. Most guessed heater core. I did some research online and decided that it wasn't the heater core because the only thing I have done since last winter was add a touch of antifreeze. So what I did was replace the water pump, and while I had everything off in the front I replaced the thermostat as well, the thermostat was working correctly but hey it was only $9. I drained all of the antifreeze as well. Then I put everything back together and then bled the coolant line as the truck was running. Low and behold I no longer have a problem. Truck has about 174K on it and the water pump was original. Just though I would share this little trick because the winter usually brings out the worst in our vehicles. Hope this helps someone! Toby [/QUOTE]

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