Is the coolant temp sensor at ambient temperature?
Is the coolant temp sensor at ambient temperature?
Many of us have had the Coolant Temp Sensor or the Temp Gauge Sensor fail on us, and when replacing it, found that the replacement sensor was also inaccurate. Here’s a chart that gives the resistance values at a wide range of temperatures. It’s best to have the sensor at ambient temperature instead of fresh off the engine.
What does the temperature sensor read on a GM car?
Basically, the gauge reads below the lowest line, until you turn the key, at which point it reads about 1/4, until the key is turned off. Engine temp has no impact. Today, I got out the MVM, set it to 29K ohms, put the common lead in the common hole, and the positive lead in the ohms hole.
What are the symptoms of a bad ambient temperature sensor?
When the ambient temperature sensor fails, there will usually be a few symptoms that may alert the driver that a problem with the sensor has occurred and it should be inspected or replaced if needed. 1. The AC auto mode will not work
How can I find out the room temperature of my car?
Take your multi-meter with you and try to determine the room temperature inside the parts store. Set your meter to Ohms, and see what resistance you get. It will tell you what it thinks the room temperature is. For example, I have a Temperature Gauge Sensor that I recently removed from my 87. The temperature in the house is 77.
How to change ambient temp in Chevy Tahoe?
To perform an instant update of the Ambient Temperature Sensor, simultaneously press and hold the Recirculation button and A/C button on the HVAC control head. (Fig. 13) It is also possible to perform the instant update by using a scan tool in the special function mode and selecting instant OST update.
Where is the temperature gauge on a GM car?
Only one terminal of the sensor will give you a reading, and that one is for the gauge. The other is for the light and won’t come on unless the temperature is above 235. I think the light terminal is the one nearest the slot in the side of the sensor head. The test is best done with the sensor removed from the engine.
Many of us have had the Coolant Temp Sensor or the Temp Gauge Sensor fail on us, and when replacing it, found that the replacement sensor was also inaccurate. Here’s a chart that gives the resistance values at a wide range of temperatures. It’s best to have the sensor at ambient temperature instead of fresh off the engine.
When does ambient air temp change on Impala?
The temperature display will update after the car is driven between 32 and 72 km/h (20 and 45 mph) for 90 seconds or above 72 km/h (45 mph) for 60 seconds. In either condition, the temperature display will then be allowed to increase at the rate of 1.3 degrees Fahrenheit per second.
