When the temp gets up to 70....I am running 185-190 average on the highway. City...after coming off the highway......it will pop up a little....but will come back down...and stay down around the 190 mark. I run a 160 degree thermostat with a DHP PCM and/or Intense PCM so that probably wouldn't help you on your data. I use Prestone Extended Life. You can start by making sure the engine coolant temperature sensor (ECT) is calibrated properly. The coolant temperature sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the Engine control unit (ECU), which uses this data to adjust the fuel injection and ignition timing.  Engines vary. The normal operating temperature for a modern (e.g., 1996+) automobile engine, manufactured for sale or use in the US, will fall between 200 and 250 degrees F. Smog equipment and computerized combustion control favor a 'hotter' running engine. The boiling point of automotive coolant varies slightly from that, … but the system is pressurized, so boiling is normally not a problem. Most modern, fuel-injected automobiles have a normal operating temperature of 190 to 195 degrees. I hooked up the livewire TS the other day, and set up some gauges including coolant temp and oil temp. My coolant temperature maxed out at 174 to 176 (cruising on highway at 70 mph) and my oil temp was 192 to 194. This is almost a 20F spread, but the coolant temp seemed low, so I wasn't sure if it was reading correctly. I hooked up the livewire TS the other day, and set up some gauges including coolant temp and oil temp. My coolant temperature maxed out at 174 to 176 (cruising on highway at 70 mph) and my oil temp was 192 to 194. This is ... So check you coolant level when the engine is at normal operating temperature. Then check it when it cools down. If the coolant level is the same, both hot and cold, then you have a defective radiator cap, and then that is your heating problem. You can watch your EVIC coolant temp as you warm up and the temp should rise slowly to around 195 or so and then drop a bit (maybe 5 ?) quickly as the thermostat starts to open. Your temp should settle around the fully open point of the thermostat while under light load in cool weather. The Engine Coolant Temperature sensor is on the back of the engine, right in the middle (and unfortunately the most difficult place to reach!). It is mounted on the coolant ou … tlet that connects to the heater hoses up on the firewall. It is connected by a single electrical harness and screwed in. coolant temperature sensor are located where the coolant runs in the block near the thermostat housing normally the connector are on top of the sensor and the sensor itself sc … rews in with a deep socket. Follow the upper radiator hose to the thermostat housing. The coolant temperature sensor for the ECU (2-pin connector) is on the driver's side. The temperature sender fo … r the guage (1-pin connector. is on the opposite side. coolant temperature sensor are located where the coolant runs in the block near the thermostat housing normally the connector are on top of the sensor and the sensor itself sc … rews in with a deep socket. Parts: $31 - $55. The average cost for an engine coolant temperature sensor replacement is between $119 to $168. Labor costs are estimated between $88 to $113 while parts are priced between $31 to $55. Get a personalized estimate based on your location and specific car. Estimate does not include taxes and fees When ambient temperature is 75d and coolant is 190d, temperature differential driving heat out of the radiator into the air is 115d. For this you can use a radiator 40% smaller than for conditions described in the prior paragraph. MGs are sports cars built to be as light as possible (within economic reason). So the answer to the question is, normal operating temperature is a range with minimum determined by the thermostat. Maximum it determined by work load of engine, size of radiator, and ambient temperature (and requiring some minimal air flow to keep it working).
http://www.automotiveforums.com/t534970-average_coolant_temperature.html https://en.wikipedia.org/wiki/Engine_coolant_temperature_sensor http://www.answers.com/Q/What_is_the_normal_engine_temperature_for_a_car_engine http://www.dieselbombers.com/ford-powerstroke-03-07-6-0l/109951-what-coolant-temp-normal.html http://www.wranglerforum.com/f274/new-2014-normal-coolant-temp-311265.html http://www.answers.com/Q/Engine_coolant_average_temperature http://www.answers.com/Q/Engine_coolant_average_temperature http://repairpal.com/estimator/engine-coolant-temperature-sensor-replacement-cost http://mgaguru.com/mgtech/cooling/cool_101a.htm
average coolant temperature