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Why is my heat gauge going down?

Why is my heat gauge going down?

Conclusion. The main reason why car temperature gauge goes up and down while driving is because something is not working properly in your car’s cooling system. It could be the radiator fan, water pump, thermostat valve, coolant, or the gauge itself.

What does the temp gauge say on a 2008 Chevy Equinox?

My 2008 Chevy Equinox indicator says “Engine Hot, AC off” and the needle on the temp gage doesn’t move from the bottom. The radiator fan stays on constantly while this message is displayed. My 2008 Chevy Equinox indicator says “Engine Hot, AC off” and the needle on the temp gage doesn’t move from the bottom.

How to troubleshoot a temperature gauge in a car?

Temperature gauge troubleshooting begins with isolating the problem either to the gauge, sending unit, fuse or wiring. As with any electrical troubleshooting it is best to check all wiring connections are clean, tight and free of corrosion. The following process must be preformed with the ignition key turned to the “on” position.

How can I tell if my light gauge is hot?

Check the gauge if the needle moves toward “Hot”, the wire from the gauge to the sending unit has an open or bad connection. If it does not move, connect a test light by grounding one end to a good known ground and the other end to positive side of the gauge (typically a pink wire).

What does it mean when gauges in your car stop working?

But when the gauges in your car stop working, it’s not a situation you can safely ignore. When one gauge stops working, the problem may be in the gauge itself or a bad sensor, while all the gauges cutting out at the same time often indicates a blown fuse or a defective instrument cluster.

Why is the temperature gauge on my Chevy truck not working?

All I have the same issue, I own a 1996 chevy pickup c1500, before I replaced the temperature gauge sensor, the gage read two lines below 210, after I replace the temp gradually climbs but the engine not as hot as where the gage reads, need advice stephan is on point for the diagnostic procedure. First.it’s not a thermostat issue.

Is the check gauges light really overheating?

My Check Gauges light comes on while driving periodically and chimes as the temp gauge goes all the way to the right saying the engine is overheating. However, it doesn’t appear to be overheating at all. After about 30 secs of being on, the temp gauge returns to normal (180-195ish) and the Check Gauges light goes off.

What to do if your car gauge is overheating?

Take the pressure cap off the radiator and run the engine until the thermostat opens (coolant starts flowing through the radiator and the upper hose gets hot.) Turn the engine off and let it cool. Add more coolant (50% antifreeze + water) to bring the level back up to normal.

What should I do if my Guage sensor is not working?

Your guage should peg out. If it does both of these correctly, then you need a new temp sensor. If it does anything else with either of these two tests, then it’s a dash cluster/guage problem. Check your thermostat first! If your thermostat is bad, the engine will never warm up, and that can make it look like the gage is bad.

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Ruth Doyle