Is Coolant Temperature of 220 Normal? - Page 2 - Kia Forum
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post #11 of 13 (permalink) Old 04-04-2019, 12:37 PM
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Originally Posted by geezerspecv View Post
.... Driving around town, the coolant temperature is 210-220.

The electric fan goes on at 204-206 after a warm-up. Then the temperature fluctuates between 204 and 210 on continuous idling.
It sounds like you have a DIY mindset, so why not find an online copy of the KGIS service manual, which will tell you everything you need to know about the spec operating temp range, thermostat opening temps, and of course a whole lot more. I'm not referring to that ridiculous subscription which KIA sells, but rather a full online KGIS copy which is a one-time download purchase. A bit of research should be able to locate a source for your specific vehicle's manual.

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post #12 of 13 (permalink) Old 04-04-2019, 02:17 PM
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Originally Posted by geezerspecv View Post
I still don't understand that if the thermostat is rated at 195, why the car runs at 225. At that temperature it must be wide open. Is the water pump specified properly?
The thermostat isn't "rated at 195".. it simply opens fully at 195. That means your engine is expected to run 195 or hotter. Also, the thermostat is a mechanical part that provides no feedback to the computer. The computer just assumes it opens, and takes a temp reading from the engine coolant temperature sensor. If that sensor is reading 225 and the computer isn't causing a check engine light (or some other warning light) to go on, you're fine. That means the computer thinks 225 is ok.

Also, look at any coolant tester.. the high range is well beyond 225. You're not in any danger.
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post #13 of 13 (permalink) Old 04-04-2019, 02:50 PM
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Originally Posted by tom4416 View Post
T-stats are not meant to maintain a set temperature based on their rating, that's just their opening/closing point and is programmed for the best emissions. 220 seems like high normal to me but is the dash indicator slightly to the left of middle? Don't know if the dash gauge is linear or stepped but should still give a fair indication of "normal" temps. I'll have to hook up my scangauge and see what kind of readings I get. My C6 Corvette always ran 220-225, my wife's Accord 195-200, my 4Runner 210-220 so cars seemed to have their cooling capacity "programmed" to get into the best temperature for emission control for that particular engine.
the temp gauge is junk for anything close to an accurate measurement.

Connect a scan tool of any kind (Torque?) and you will find that the stock temp gauge goes to its "normal position" of just below half for anything starting at about 65c. I've never had mine go any higher than the stock normal position from 65 to 92C (I've never seen my car higher than that)


92c = 198F, 65c = 149F so your car is running plenty warm for sure.

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