During the winter the heat is lukewarm

2003 HYUNDAI ELANTRA
167,000 MILES • 2.0L • 2WD • AUTOMATIC
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STXHAMMER
  • MEMBER
  • 47 POSTS
It’s full of coolant so it’s not that. Is it the thermostat and if so how easy is it to replace?
Jan 10, 2020 at 11:38 PM
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SCGRANTURISMO
  • ✓Experienced Mechanic
  • 4,897 POSTS
Hello,

Yes, it could be the thermostat, or it could be a few other things as well, but I would recommend starting with the thermostat. Down below is a link to a general diagram on how to replace a thermostat:

https://www.2carpros.com/articles/replace-thermostat

In the diagrams down below I have included the instructions for the removal and installation of the thermostat on your vehicle, as well as the location, instructions for testing, and the Original Equipment Manufacturer[OEM] part number for reference as well. Please go through these guides and report back with how everything turns out.

Thanks,
Alex
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Jan 11, 2020 at 4:16 AM
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