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2003 range rover temperture gauge

I replace top radiator hose and now with the key in on position the temperture gauge go over pass hot without starting the truck

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Remove the temp sensor wire with key in on position to see if it still goes to hot position If it does you have a short in the sender wire and if it drops to not reading the sensor is probably faulty

Posted on Feb 15, 2009


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Sounds blocked to me, with the limited info provided that is. Here's a couple often overlooked things to check if you havnt already: 1.The resorvoir cap located on top of the coolant tank behind battery. This is a critical item and must operate correctly. They do get worn and can malfunction and as with the thermo once overheated they need to be replaced. 2. The line from the top of the radiator that wraps the inside fender and up to the neck of the resorvoir. If you disconnect from resorvoir with engine running (but cool) you should have a steady flow of coolant. If its intermittent or weak this would indicate partial blockage. 3. The thermostat replacement, was it done by a qualified tech? This is the "artificial heart" looking junction down near the battery side of lower radiator. Because the engine block is a GM design it is cast to accomodate the thermo at the top of the engine as with a GM car. Rover does not use this and it is a clear passage from top hose to top end. It is not unheard of for an unfamliar tech to install a thermo here thinking the old was simply removed. Also the hoses may be connected to the wrong ports. Two of the three are the same size, check it out, your "heart" may be in backwards.
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Temperture gauge show's hot after a one minutes running

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