Will the check engine light come on if the thermostat is bad?
The most noticeable issues occur when the thermostat gets stuck in either the open or closed position. A malfunction can result in a trouble code, generated by the engine’s computer, which can turn on your check engine light.
Why does my check engine light come on when I turn on my heat?
This may be due to a poor wiring connection, or a failing sensor. At this point, you will want to double check the connection to the sensor and make sure it is clean, dry, and tight. If the connections look fine, chances are there is an issue with the sensor itself, and it will need to be replaced.
Can a bad thermostat damage an engine?
Symptoms of a Bad Thermostat If your temperature gauge is running hot and is reading in the red do not drive it. There is a good chance that your thermostat is stuck closed and the coolant isn’t circulating. This can result in major engine damage and it can happen quickly. This can also lead to engine damage.
How do you replace the thermostat on a car?
Note the orientation of the thermostat, and how the new one will be mounted. Compare the old and new thermostats closely to be certain you’ve got the right part. Remove the thermostat and clean the sealing surface, using a gasket scraper. Install the thermostat gasket and ensure correct alignment. Place the thermostat into the engine.
When do you need to replace the thermostat housing?
The thermostat housing will need replacing if your vehicle outlasts the thermostat, and the part is not functioning correctly. If the hose cracks, the seals are damaged, or the housing cracks due to consistent cooling and heating, the overall thermostat housing can break down and wear out over time.
How can I check the alignment of my thermostat?
Check Thermostat Alignment Carefully lift the thermostat housing away from the engine. Before removing the thermostat, pay attention to the way the thermostat aligns inside the housing. To check the alignment, note which direction the bleed pin—near the edge on the round base of the thermostat—points to.
Why does the Check Engine light come back on after replacing the thermostat?
His reader indicated it was a thermostat problem. I just want to know why the check engine light came back on after the thermostat was already replaced. If the check engine light is coming on and a code like P1217 is in the computer then the computer is seeing an overheat conditions from the coolant sensor telling it your engine is overheating.