ENGINE TEMPERATURE GAUGES
Is there any reason other than cost cutting that has resulted in vehicle manufacturers not fitting enginecoolant-temperature gauges today? In my opinion, this meter is the most important measurement on a vehicle’s engine. As for myself, I would gladly pay extra for a factory-fitted water-temperature gauge.
My wife wanted a Chevrolet Sonic, which is one of the vehicles without such a gauge. I bought the car from a reputable pre-owned dealer and was told that the engine had overheated just below 60 000 km and, consequently, a remanufactured engine was fitted by Williams Hunt. After two years of ownership, I decided to fit a coolant-temperature gauge as I want to monitor the engine temperature. found in older vehicles was unfiltered, resulting in a fluctuating needle depending on the load on the engine. This resulted in nervous drivers, as the needle swung close to the red section during hard driving and then to the cool section during coasting. Manufacturers now build a hysteresis into the reading where the gauge shows 90 °C (general coolant operating temperature of an engine) for temperatures between 85 and 95 °C.
Another issue is that many gauges read only coolant temperature. This means that, when the coolant is lost owing to a leak in the system, the sensor may not be in the coolant any more, but suspended in air. The result is that the reading may drop while the engine is actually overheating. Only a keen motorist will note the sudden drop in engine temperature during a