Car Temperature Gauge Not Working

There may be a bad electrical connection with the sending unit. I had the same issue with the temp not reading and AC not working on 2009 HHR.

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Wait to see if the temperature gauge reads correctly.

. The first step in diagnosing this type of issue is to identify the fuse associated with the instrument cluster or gauges. A third reason your temperature gauge reads high could be because the thermostat is broken. As with any electrical troubleshooting it is best to check all wiring connections are clean tight and free of corrosion.

The fuse must have power on both sides when the ignition key is turned on. After removing the instrument cluster to replace bulbs upon reinstallation the temperature gauge failed to work. A fast way to check if the wiring and gauge are okay is to unplug the yellow white wire from the sensor then use a jumper wire to ground that terminal.

That of the water in the cooling system that of the engine lubricating oil and that of the outside airAs auto manufacturers enhanced the dashboards from the rudimentary speedo and fuel gauge they used two types of gauge. The mechanical and the electrical. Now its not working at allwhen i have driven for a while i notice erratic shifting in the gears some loss of power.

Air can pool near the temperature sensor or the thermostat and cause faulty readings or no readings at all. The coolant passageway might be blocked with sediments or rust. If the temperature gauge reads maximum hot when the ignition switch is turned on everything up to that jumper wire is working.

A small leak or evaporation may cause your radiator to slowly lose coolant. Temperature gauge not working. Diagnosing Air in the Coolant System.

Air can pool near the temperature sensor or the thermostat. Temperature coolant gauge was working fine then just started working sometimes. No needle gauge reading and --- reading for on board computer for engine temperature.

There is another coolant temperature sensor close by which sends a signal to the ECU to help in engine management. Another common reason for a faulty temperature gauge is air making its way into the radiator hoses. What do you do.

If you are having the issue of car gauges not working at all the problem is usually either a fuse or wiring problem. A common reason your car temperature gauge goes up and down and no heat is emitted is that your cooling system is faulty. Bad coolant temperature sensor.

I replaced the temperature sensor located on drivers side towards rear of engine make sure to let engine cool down and use a drip pan and it was still not working. If the temperature gauge reads high it could mean your engine is overheating. Another possible problem is that the car has a faulty temperature gauge.

You should have a service or repair manual written for your specific vehicle prior to attempting these tests. Another reason your reading might be high is you could be losing coolant. This sends a signal directly to the dashboard gauge.

The most common problem when the car has a faulty engine temperature reading is due to the coolant temperature sensor which is faulty and sends erroneous information to the cluster instrument. I swapped in a new used gauge and still nothing. Easy to check on.

Well there are really only three parts to it so follow these steps to. Another common reason for a faulty temperature gauge is air making its way into the radiator hoses. There are 3 temperatures of interest to the motorist.

Grounding its terminal produces no movement at the gauge. The dash gauge temperature sending unit has failed. I am having troyuble trying to figure out the the cause behind it.

You may want to check out clogged components such as the heater core radiator hose coolant level thermostat or water pump. IF the other guages are working then the Temperature Guage is either bad or the DATA is not being sent from the PCM. I replaced the temperature sensor as it was very inexpensive first.

Take a test drive. Since you are experiencing no overheating problems the most likely cause is that the engine coolant temperature sending unit is faulty. Check to make sure the coolant level hasnt dropped.

But it could also happen that all the gauges stop functioning at the same. Lower your car. It could be either a bad sensor or a problem with the gauge itself.

To diagnose an inoperative temperature gauge youll need to test the coolant temperature sensor and the wiring for that circuit. So you have an older car and your temperature gauge isnt working. Why is my car temperature gauge not working.

Use of Dealer Scan Tool is needed to test DATA at from the PCM My goal is to provide you with excellent service if you feel you have received anything less please reply back as I am happy to address follow-up questions. You will need to drain and fill the cooling system as well as test specifically colored wires. Make sure you are checking the dash gauge temperature sending unit and not the coolant temperature sensor for the engine management computer.

The following process must be preformed with the ignition key turned to the on position. Once one of the gauges in your car stops working there can be one of two reasons for this. Temperature gauge troubleshooting begins with isolating the problem either to the gauge sending unit fuse or wiring.

It can also affect the cars overall cooling efficiency.

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