![]() ![]() Here’s the coolant level sensor, a straightforward level switch, easy to install with minimal chance of gremlins: After a quick phone call I confirmed that the sensors were for sale separately (about $25 IIRC), and a plan was formed in my head. Enter the simple and effective float switch I discovered on This company sells the Little Black Box system which is very comprehensive, but I was only looking for the coolant level sensor. However, the Rangie cap sensor proved to be quite temperamental, so I searched for a more reliable solution. I decided that the expansion tank is the most convenient of the correct places to install a sensor and initially went down the route of using one of those Range Rover caps that incorporated a level sensor. The only example that comes to mind is the 12valve 2.4 Nissan engine used in the '90's in Pintaras and Ford Corsairs. In this system coolant level is ultra critical because any low level is carried in the engine (at cylinder head level) and the radiator will always remain full whilst the pump is in operation. A very few have a reverse coolant flow where the thermostat is mounted below the water pump, and the pump pushes coolant down into the bottom radiator hose, up through the radiator and into the engine. Only when the level is so low that it falls below the level of the water pump (causing the pump to cavitate) will the engine not be full of coolant whilst the pump is operating.Īs I said above, this is the system for the majority of engines. The low level is carried in the radiator, not in the engine. This is in fact done deliberately by most manufacturers to ensure that the engine receives its full level of coolant whilst in operation, even if the system is a little low. It would only be when the pump was stopped that the low coolant level would be equal in both the expansion tank, thermostat housing and radiator. If the coolant level was low it will show up in both the radiator and the expansion tank, before a low level was experienced in the thermostat housing or top radiator hose (whilst the water pump is operating). In our Land Rover engines, the water pump draws coolant in through the bottom radiator hose and pushes the coolant from this hose up through the engine and out through the thermostat housing into the top radiator hose. When the engine is running, these are the two worst places to be looking for low coolant level because of the operation of the water pump. I’ve always had an issue with trying to detect a low coolant state either in the thermostat housing or the top radiator hose. To book the next service for your Range Rover Sport, call our team today.Some time ago I fitted a low coolant alarm to my Defender, and since my version is slightly different to some, I thought I’d share the ideas and reasoning. Our certified automotive specialists at Land Rover South Atlanta can address all of your crossover’s outstanding maintenance needs during your next visit to the dealership. Maintaining an adequate engine coolant level in your Range Rover Sport is only one of many maintenance steps that your crossover requires. Schedule Service at Land Rover South Atlanta Today Because the recommended range is marked on the tank for you, you will not need to worry about precisely measuring the amount of coolant that you add to your vehicle. It is translucent and has levels indicating the minimum and maximum coolant levels that are recommended for the Range Rover Sport. You can easily check your Range Rover Sport coolant level through the tank. For some drivers with a do-it-yourself mentality, topping off the coolant tank is a relatively straightforward task, but how much coolant does the crossover need? How Much Coolant to Add to Your Range Rover Sport One of the warning lights may indicate the need to add more coolant to the coolant tank. ![]() ![]() When various indicators light up on the instrumentation screen, your Range Rover Sport may need to be serviced soon. At Land Rover South Atlanta, we want to help you maintain your Range Rover Sport properly over your years behind its wheel. ![]()
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