Heater not hot

Tiny
TKUHRICH
  • MEMBER
  • 2003 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
First day of cold weather so I adjusted the temperature to around 90 degrees to get the cold out of the truck. I dive about 45 miles to work and the whole way, it blew cold air. While the temperature outside was in the teens, my outside reading in the truck was 40 degrees. Replaced the outside air temperature sensor. Next day, same issue but my outside air temperature was closer to reality. Next I noticed that my temperature gauge was not getting off 'C', maybe a bit, but no where close to mid range. I replace the thermostat with a 195 degree OEM part. Now I get lukewarm air, but not hot.

Any help would be great.
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Thursday, November 14th, 2019 AT 11:00 AM

1 Reply

Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

Okay, so in the diagrams down below I have included the pinpoint test from the vehicle manufacturer for "No Heat" condition in your vehicle. Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Thursday, April 15th, 2021 AT 1:44 PM

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