The thermostat is around 192-195F for most modern cars (they actually started using these temps back in the 90's as they wanted engines running hotter for emissions reasons). The old school "high temp" t/stat of 180 F is long gone. My car runs between 190-196F on normal cruise. BTW, when your temp shows 190 F, the fan will NOT be running as the thermostat opens a few degrees later and I'm guessing the fans won't come on until at least 200 F. Many older cars had fans that came on at 215 F which isn't that hot BTW. With a pressurized cooling system, even 220 F is not a problem when you realize that plain water boils at 212 F without pressure. With 15 psi or more of cooling system pressure, that boiling point of plain water exceeds 225 F; so with 50/50 coolant, your boiling point is significantly higher so I wouldn't worry about it. Your analog gauge reads 1/2 way which is normal. If it begins to go to 3/4 way up, I'd begin to get a little concerned.Too rainy and wet for a long ride today, but after about 10 minute drive with CHTs of around 190, the fan was NOT running, so that may be my problem. The coolant temp gauge was right in the middle, like it always seems to be (I wish we had a readout option for coolant temp in addition to CHT). Will need to schedule a service call to have this checked.
Thanks again for the responses!
I have been curious about that myself.So what is the CHT actually measuring? Is it water temperature in the head? Oil temp in the head? Or the aluminum casting itself? And if it's the casting, where in the head? I'm sure the combustion chamber would read a lot hotter than cam shaft supports would.
https://www.vehicleservicepros.com/...ng-fords-cylinder-head-temperature-cht-sensorI have been curious about that myself.
Thanks for the info!https://www.vehicleservicepros.com/...ng-fords-cylinder-head-temperature-cht-sensor
This is all I could find online. It does note that it was published 10 years ago so things may have changed since then. But it claims the sensor is measuring coolant temperature in the cylinder head and that info is used to control how the torque convertor in the transmission engages.
Either way, my owners manual states the engine will go into protection mode before any damage is done from high temps. My CHT looks very similar to what you posted and I have no fear about them being too high. I tend to believe what the engineers who built the product say and take whatever the internet experts say with a grain of salt.
What ? My non-performance pack ride I never see 200f CHT, even with the AC on it's at 198-199f. Temp gauge never goes past 1/2. Actually I'd call it never goes past a 1/3. Behind me upper grill is a rubber flap that covers just 1 row of honeycombs.Non performance pack GT's run much warmer because of them.
15-17 gt doesn't have them either from what I've seenWhat ? My non-performance pack ride I never see 200f CHT, even with the AC on it's at 198-199f. Temp gauge never goes past 1/2. Actually I'd call it never goes past a 1/3. Behind me upper grill is a rubber flap that covers just 1 row of honeycombs.