It is also possible that the sensor has gone bad - in which case you might try cleaning it, or just leave it alone, and unplug it to get rid of the light - BUT if you do unplug it you have to make sure to check the coolant level regularly so as not to overheat and wreck your engine. It does, however, most likely mean that you have developed a small coolant leak, and it would be best to figure that out and fix it. Add coolant to the reservoir (as per manual instructions as to mix and type) and that will almost certainly fix the light. When you heat up the car, coolant expands and the overflow goes out the reservoir, and covers the sensor but the car doesn’t update the light until the next time you start it. If the coolant warning light is blue, on the other hand, you. If the coolant warning light is red, the issue is your engines temperature (i.e., it is too high). When the car cools down the coolant contracts and gets sucked back into the radiator/cooling system, and the sensor goes dry and triggers the light. If your engines temperature is higher than it should be, or your vehicles coolant level is low (possibly due to a leak), the coolant warning light will appear on your dash. (From below the radiator cap, follow a black rubber hose to a plastic tank that has coolant in it). Have also worked on a 95LX sedan and a 96LX wagon.The sensor for the coolant level is in your overflow reservoir. All of them in use as daily drivers as the mood strikes us. Now I own a 91LX hatchback, 92LXwagon, 93LX hatchback, two 94LX wagons (both 5-speeds). Would be glad to know what year your Escort is, and how long you have had it. Have replaced a heater core and one radiator for that reason already. If the system uses more coolant than that - I go looking for the leak. I have to add about 1/2 cup each year, which is likely just the water evaporation. Always with a cold engine, and use a twig to see how deep the coolant is in the recovery bottle. I check my coolant fairly often, at the radiator and in the recovery bottle. At this point, the coolant fluid is going to be. If the engine coolant light remains on or the engine is overheating, do not continue to drive. Start the vehicle and ensure the engine coolant light is turned off. Add the necessary coolant to bring the level to or near the maximum. While taking traffic conditions into account, safely pull off the road and switch off the engine. The antifreeze/coolant is typically mixed 50/50. This will transfer some heat away from the engine. If you see light brown coolant in your vehicle, it’s important to get it checked out by a mechanic as soon as possible. This can happen when you add oil to your radiator or when your engine starts to leak oil into the cooling system. The coolant, also known as antifreeze, plays a crucial role in maintaining the engine's temperature and preventing it from overheating. So now I just unplug the connector at the cap - and the light on the dash stays out. If the coolant warning light comes on, you should do the following: Immediately turn on the heater at maximum temperature and maximum fan speed. Light brown coolant is most likely due to a mixture of antifreeze and oil. When the coolant warning light is on in your car, it typically indicates that the engine's coolant level is low or there may be an issue with the cooling system. Driving with the coolant warning light on can cause serious damage to. If the light is on, it is important to stop the car as soon as possible and investigate the cause of the problem. And this happened on more than one of my five 2nd gen Escorts. Various issues, such as low coolant levels, a leak in the coolant system, or a problem with the coolant temperature sensor, can trigger the coolant warning light. I had cleaned those tips until they were shiny, and found that even with plenty of coolant in the bottle, the light on the cluster would come on from time to time. My ML has traveled 119,000 Klms (73.5k miles) Even though fuse was replaced as per Post 64 this thread, the low coolant light has started coming on randomly again - sometimes while stationery - other times while driving. I find my coolant reservoirs are happy to stabilize with about 2" or 3" of coolant when cold, which I think is below the tips of the sensor. The coolant light serves as a sentinel for your engine’s temperature regulation. Pesky light- but wait theres more Thought my issue was fixed but it’s not and gets worse. I think the sensor is a field effect transistor located in the top of the sensor - where the connector is.
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