PeterM

Problem is seam to be using water but no leaks to be found water pump ok and engine is running well no smoke no over heating. Fill coolant up run for 10 miles warning light comes on water level low in tank but if open water returns to fall levels change cap on tank and still dose it. Any ideas of what to do next I think it is something to do with when the engine is running and the pressure builds up in the tank it can't escape dropping the water level and then the warning light comes on. Help is needed garage dose not seem to no. Please help me out.

Problem is seam to be using water but no leaks to be found water pump ok and engine is running well no smoke no over heating. Fill coolant up run for 10 miles warning light comes on water level low in tank but if open water returns to fall levels change cap on tank and still dose it. Any ideas of what to do next I think it is something to do with when the engine is running and the pressure builds up in the tank it can't escape dropping the water level and then the warning light comes on. Help is needed garage dose not seem to no. Please help me out. Thanks Pete.

does anyone know how to reset the service light spanner on a C5 2001 HDI thanks s would help a lot