Engine slow to reach "normal" operating temp in winter - Hyundai Elantra Forum
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post #1 of 2 (permalink) Old 02-06-2020, 12:33 PM Thread Starter
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Engine slow to reach "normal" operating temp in winter

I have a 2018 Elantra SE with the 2.0L L4 DOHC 16 Valve engine.

So far, I have driven just under 30,000 trouble free miles.


In general, I have found that the engine takes a little longer to get to the "normal" operating temperature compared to other vehicles I have owned. My previous vehicle was a 2010 Elantra.


Last night the temperature dipped to 16 degrees Farenheit and it took about 10 minutes of driving on the highway before the needle on temperature gauge reached the "normal" operating temperature. Of course, it also took some time before the cabin heater started blowing hot air.


My previous (2010) Elantra did not have a temperature gauge but I could always tell how warm the engine was by how "stiff" the engine felt and how warm the air was from the heater.


Any comments on this matter would be greatly appreciated.


Thanks,
JimBob

Last edited by [email protected]; 02-06-2020 at 12:35 PM. Reason: Fix typo.
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post #2 of 2 (permalink) Old 02-25-2020, 03:23 PM
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The first suspect would be your thermostat is stuck open, or failed, assuming you have already confirmed the fluid levels are fine.


On another vehicle (non-hyundai) I had an air lock in the heater core that would send no cabin heat, regardless of the engine temp, but that's not your issue, as you said the gauge shows the engine is running cold.



As a check on the thermostat you can try putting cardboard in front of the rad. But really watch your heat gauge if you do that! I've never attempted this on a Hyundai, so not even aware if there is space to do so.
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