water temp gauge 70s chevy van

• 2023-08-25

The 70s chevy van water temperature gauge also displays the coolant temperature. The normal water temperature is 80-90 degrees. Generally, it is in the middle position of the water temperature indicator. If the indicator needle is too high, it indicates a problem: 1. There are many reasons for the high water temperature of the 70s chevy van. In addition to high-temperature weather, the overloaded operation of the air conditioning and the failure of the heat dissipation components can also cause the car to boil; 2. A comprehensive inspection of the 70s chevy van cooling system is the primary method to prevent high water temperature. Check whether the fan is normal, whether the water tank leaks, and whether there is a lack of coolant. If the water tank leaks, it needs to be repaired or replaced in a timely manner. If the water tank is short of liquid, it needs to be supplemented in a timely manner. If the coolant is turbid and deteriorated, it needs to be replaced; 3. In addition, the water contained in ordinary coolant can form a vapor barrier on the cylinder wall of the engine, hindering heat dissipation, leading to engine failure and shortening engine life. It is best for car owners with conditions to use a type of "anhydrous coolant" on the market in the summer. This type of coolant does not contain water, avoiding the formation of an air barrier layer, and fundamentally overcoming the damage of water or water-based cooling media to the engine.

The detection method for the 70s chevy van water temp sensor is as follows: 1. Check the power supply voltage: unplug the plug and use two probes of a multimeter to check whether the voltage between the two wires is around 5V of the reference voltage (some models directly supply 12V voltage to the water temperature sensor); 2. Reading data stream: The normal water temperature signal is generally around 95 ℃ (for high-temperature engines, it is around 115 ℃). If the water temperature sensor signal is detected to be abnormal, maintenance should be carried out. For example, if the water temperature signal displays -40 ℃, it indicates an open circuit or a short circuit to the negative electrode. If the signal does not change at 130 ℃, it indicates a short circuit to the positive electrode (some cars may display it at 140 ℃);