I'll take duly noted on the OEM parts and I should have a look around on new radiators as well. In <85 weather, we usually see 192-200 coolant. I usually put the AC on, so both fans runs fine. Yeah the head distortion is what scares me the most. Go to far, and you'll have no choice but to repair the motor due to heat distortion of the head. With the Aluminum head and cast block, things began to move a different rate the closer you get towards 240*F. Having a lower temperature is not a good thing, the engine has been. If the second(AC) fan comes on all by itself from the engine temps, than you're into a problem area. The AC fan when not running the AC should turn on when the temps get around 225*F. The regular cooling fan(drivers side here in the states)turns on around 205*F. If equipped with AC, they both will turn on when the AC is turned on. I went with a CSF two row aluminum radiator. IMHO, it is borderline when the car is equipped with AC, the temps climb, and you get stuck in traffic. If the coolant temperature rises to above 248f, 'HI' is displayed and starts flashing. This warns the operator that the coolant temperature is high. Most folks get along fine with the single row OEM style radiator. Most of the current bikes are the same so per my Z1 Owner's Manual: If the coolant temperature rises to above 239f and below 248f, the numerical value of the current temperature starts flashing. If the rad isn't shiny black, then replace it. I second the advice re a new radiator if yours is getting old. There is a difference between the Mazda OEM, and something like a Stant cap and or thermostat that says it is an OEM replacement. Get the correct OEM parts from a Mazda dealer. I just figure the everyday-hot weather here might be the factor and may need a cooling system upgrade. An engine is operating normally when the needle points at the center or near the. Maybe I also need a new radiator as well, I can see few dried coolants around the radiator seams. The ideal engine temperature should be somewhere between 195 and 220 degrees. Unfortunately although I have a 2001 year RHD model, there is no OBD2 support (I have checked all over the car for it). During normal driving, the engine coolant temperature stabilizes at 100 C (210 F) or less, and the gauge indicates a range lower than 100 C (210 F). I have an analog Defi DF144 with the sensor located right before the radiator. More coolant flows through the radiator and less coolant flows through the bypass passage. If it reaches eighty (80) to ninety (90) degrees, the thermostat will allow the cooling fluid to flow through the other cooling circuit. Celsius’s average operating engine temperature is somewhere between seventy-five (75) to one hundred five (105) degrees Celsius. As the engine temperature increases, the main valve opens further and the bypass valve gradually closes. What Is The Average Normal Coolant Temp For most modern vehicles.

I will be sure to find a new thermostat and radiator cap. The main valve begins to open at a coolant temperature of 189F, and a small amount of coolant flows through the radiator. Good luck I hope we have a happy ending to this.Thanks for the reply everyone. I'm almost surprised some safety device isn't shutting it down if the temp is that high. In any event, I'd suggest verifying your engine temp to be sure you're not damaging it. After understanding the reason I declined the repair since it wasn't hurting anything. I had my dealer check it out and he said it was a bad sending unit. Fans should come on around between 200-215 normal street driving. If coolant is OK, maybe you've got a defective gauge or sensor? The oil gauge in an Olds I once had would give me a false high at certain places in the dial - it would just shoot up for an instant but as soon as I passed that spot in the dial it would go back to normal. Re: Normal Coolant temps 220 degrees F on track is not uncommon. I don't mean to talk down to you, but consider the obvious: have you checked your coolant level? Maybe its low. If the fan isn't running and your engine is as hot as you say, I suspect your fan may not be running at all so your radiator and engine are not benefiting from its expected contribution. After running a few tests on my overclock, I noticed that the temperature of the coolant only rises from 31 to 33 degrees while the CPU changes from 37 idle to 75.5 100 load. I'm new to owning a Compass, but on other vehicles I've had, the fan did not run all the time, only when the engine got hot enough to need it. The coolant temperature doesn't seem to rise in sync with the CPU temperature. Mine stays about 190-195F don't think it went over 200F all summer. Click to expand.Yikes! I would say its not normal and you may have hurt your engine.

Normal coolant temp