May 24, 2018 · Hi @amida. I can't alter my comment now because it was made too long ago to edit, but the meter I was referring to was the car's temperature gauge. If you disconnect the lead from the coolant temp sensor in the engine and then use an Ohmmeter to measure the resistance between the sensor's connection point and earth on a hot engine it should read 30-50 Ohms. Aug 20, 2015 · So after driving about 15 minutes, the temperature gauge will be sitting at about the mid-way mark. then the following occurs: - Temperature warning light illuminates red. - Temperature Gauge plummets to "C" and remains there. - Check engine light comes on. - AC compressor stops (starts blowing only warm outside air)

Clean or replace the IAT sensor after testing if it is found to be defective. Follow the below-given steps to replace and IAT sensor: Turn off the engine and let it cool down. Disconnect the negative connection of the battery. Unplug the IAT sensor wire harness. Locate the intake air temperature (IAT) sensor.

Aug 14, 2023 · Idle the engine. If coolant starts to flow right away, it means the thermostat is stuck open. When coolant does not start flowing, wait for the engine to warm up. The coolant should start to flow in ten to twenty minutes. The thermostat is stuck closed if the coolant does not flow, but the temperature gauge rises.
Your cooling fan will usually be inactive, but if your car is stationary (with the engine running) or the temperature starts rising, it will kick into action. The internal thermostat (part of the car’s cooling system) senses that the radiator is getting too hot. When the sensors in the cooling system of your car detect that the coolant is

Jun 2, 2022 · 3. Sensor Issue . The automatic transmission system has several sensors. The TCM will receive information from those sensors and allow you to shift the gear to the next smoothly. For example, every automatic transmission has a sensor in the transmission pan that senses the fluid temp.

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ford focus outside temperature sensor problems