The car will spike the temp gauge, then go back to normal. Does it with no rhyme or reason. should I replace t stat? if so how do I go about that?
Apr 21, 2009 at 4:09 AM
Coolant temp sensor issue or air pocket?
1996 DODGE INTREPID
REGAN 4435
- MEMBER
- 1 POST
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This could be a couple things. It could be a temperature sensor, an air pocket that is moving through the system, or the thermostat.
If it were me, I monitor the voltage on the sensor and make sure it is moving in relation to the gauge. If it is then monitor the temperature on the thermostat housing using a laser temperature gauge and see if the temperature is actually doing this.
https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor
https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement
https://www.2carpros.com/articles/how-to-use-an-infrared-temperature-meter
If it is then you have a thermostat that is opening and closing which means you need to remove it and put it in a pot of water and boil it and see if it is opening properly and staying open.
I attached the info below as I suspect this is a sensor issue. Please let us know if you have other questions and what you find. Thanks
If it were me, I monitor the voltage on the sensor and make sure it is moving in relation to the gauge. If it is then monitor the temperature on the thermostat housing using a laser temperature gauge and see if the temperature is actually doing this.
https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor
https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement
https://www.2carpros.com/articles/how-to-use-an-infrared-temperature-meter
If it is then you have a thermostat that is opening and closing which means you need to remove it and put it in a pot of water and boil it and see if it is opening properly and staying open.
I attached the info below as I suspect this is a sensor issue. Please let us know if you have other questions and what you find. Thanks
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Jul 14, 2021 at 11:17 AM
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