Your fan should then kick on high rpm and cool your system. Your temperature while moving should be between 199 and 204. I bled it everyday to keep it on the road til I could tear down the motor and replace the head gasket. Causing air to get pushed into my cooling system. My head gasket was a leak between the coolant and the cylinder. If the cooling system is not bled properly, durango's will not forgive you. These 2 simple things caused me a blown head gasket when I thought it was just my water pump. It does not sounds like 210 degrees is too high. Number 1 cheapest must do: radiator cap and bleed the cooling system. For most vehicles, the normal operating temperature will range from about 195-220 degrees Fahrenheit. Anything over 230 and you have a problem. More coolant flows through the radiator and less coolant flows through the bypass passage. As the engine temperature increases, the main valve opens further and the bypass valve gradually closes. They will get up to 230 to 240 on a long hill. Even towing an 1800 pound teardrop, I rarely see it above 220. For most cars, the normal operating engine temperature is in a range of 195 to 220 degrees Fahrenheit, though most dashboard temperature gauges dont show. My '14 will normally run in the 210 to 220 range over some hills at 75MPH on a hot day, and that is completely normal. It sounds like the winter lips should stay on until the coolant temperature hits 200F. At 226 the high electric fan will kick in and cool it right down. KenJapan P PA Prius Registered Joined 216 Posts Discussion Starter 4 Thanks, this is helpful. You can check that by idling in the driveway with the heater off. The main valve begins to open at a coolant temperature of 189F, and a small amount of coolant flows through the radiator. We see the typical coolant temperature is about 88C (190F). I've read that the radiator fan should come on at 209° I had a number of consecutive misfortunes plague me resulting in a blown head gasket. The thermostat begins to open at about 190F to 195F and is not fully open until about 215F to 219F. When it's on the highway, it knows that there is constant airflow and so the fan can be less reactive - just a guess.I've gone through hell troubleshooting my over heating problem. Is it normal for my coolant temp to be around 210 degrees I was driving around today and my coolant gauge was saying it was normal but I have a scanner. BPs will survive about 250 with enough system pressure and a bit of water wetter. There may also be some logic built into the system that it knows the engine is at idle, temps are rising rapidly and so it kicks the fan on proactively to reduce the rapid rise in temps. In <85 weather, we usually see 192-200 coolant. I tossed it in the trash after that and went with the dedicated Scan Gauge II setup. I tried one in my 4Runner and it constantly gave me trans temp overheat readings and yet the built in temp system said everything was fine. After hard driving, they seem to be gone for now, though today my car was a bit rough at startup. I became all concerns due to symptoms of CCV freezing. Since it directly impacts the life of the engine, Kia isn't going to let something that could shorten the life of the motor and cost them warranty money, go uncorrected when it's as simple as a redesigned t-stat.Īre you using a phone app for the OBD port readings? Many of them are cheap but also wildly inaccurate and the transmitters that plug into the port are very cheaply made, subject to a lot of errors. Coolant temps on the highway ranged from 85-97C (185-207F) ambient temp was 3C (37F). I doubt there is going to be a t-stat recall since this engine has been in production (V6) for years and used in the Sorento since 2016 so problems would have come up years ago and been corrected. A few degrees of fluctuation is perfectly normal- so an engine temperature of 195 to 238 degrees F is perfectly normal for a Northstar and is NOTHING to be. Since we're both taking the reading from the OBD port, have to assume our readings should be identical but supposed the Scan Gauges (or whatever other people use) could be calibrated incorrectly. My wife just got home from a long run of shopping on a 104 degree day so took her car back out, did the readout on the Scan Gauge II I have in the OBD port and my fan isn't kicking on until 215-218 degrees and when I went out on the Interstate for a five mile run, airflow kept the temps right around 208-210 but then when I got off and started home in traffic, temps would go up to 215, fan would kick on, reduce the temps back down to 210(ish) and the fan would cut off and then back on a few minutes later (about what I would expect). One thing though is that the coolant temp always first goes up to about 110C for a while before dropping back and it doesnt always drop back (I think Ive.

Normal coolant temp