![]() ![]() Increased Fuel ConsumptionĪ faulty car temperature gauge indicates that you have bad coolant temperature or ECT sensors. Even if they did not, an activated Check Engine Light is a call to perform an immediate inspection of your vehicle, preferably with a high-spec OBD-II or DBM-III scanner like a Foxwell NT809 Bi-directional Scan Tool (view on Amazon). ![]() The CEL and temp gauge warning lights are set off simultaneously in most cases. ![]() Corroded sensor, temp gauge, and ECU sensorsīeing a universal problem indicator, your Check Engine Light going off signifies a myriad of things – among them a potential fault with your temp gauge.Malfunctioning circuit in the temp gauge.Defective temperature sensor or sending unit.Provided you have ascertained nothing is wrong with your engine, the mismatched reading would then point to one of the following potential problems: The best way to go about it is to get a reading of the actual temperature of your vehicle’s engine and compare it to that of the temp gauge. And by this description, I mean the temp gauge can be either too hot or too cold but does not match the engine temperature. This symptom is probably the second most common indicator of a faulty temperature gauge. Doing so will allow you to close in on one of these triggers. One of two things could be happening in this scenario – either nothing is wrong with the engine, but the temperature reading is off the charts, or the engine has gone past its normal operating temperature but has not yet reached the point where the PCM/ECM would consider it as overheating.Įither way, you will need to check everything surrounding the engine that directly or indirectly affects your vehicle’s air-fuel mixture and cooling system. It is important to note that this incident should not be automatically blamed on failing components. Clogged radiator due to age or poor quality.Damaged temperature gauge that misrepresents actual coolant temperature.Faulty temperature gauge sensor caused by dirt or debris contamination.A bad water pump that fails to circulate the coolant throughout the engine.These anomalies can be attributed to several factors, including a bad water pump or a broken temperature gauge sensor.īased on reported incidents by vehicle owners, the four most common reasons behind high-temperature readings with no overheating are the following: Similarly, it may just stay on “cold” in the middle or go straight to high. For instance, you may notice your temperature gauge rising, but your car is not overheating. The clearest sign that you have a bad transmission temp gauge is an erroneous temperature reading. But if you can recognize its symptoms, you are already halfway through solving the problem. ![]() To put some distinction between the two, here are the nine most common ways how to know if a temp gauge is bad:ĭetermining what causes your temperature gauge’s strange behaviors may not be easy. Understandably, some of these indicators may overlap with more complex engine problems. By feel and thorough inspection, you should be able to determine if symptoms such as incorrect temp readings, unusual vibrations, poor idling, and non-working cooling fans point to a defective gauge or some other engine component. There are several ways to spot a temp gauge gone awry. Conversely, failing to do so leads to adverse repercussions, including engine overheating, stalling, and permanent engine damage. Whether you have a turbo-charged, fuel-injected wheeler, or a more dated model, keeping your engine temperature in check is a requirement. More than we would like to admit, a well-functioning temp gauge is crucial to our vehicle performance. ![]()
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