Hi all,

Got a bit of a problem with my zed..The ecu is showing code 13 water temp. sensor..Iv'e checked out continuity of wiring and resistance of sensor and its all ok..Thing is iv'e noticed there seems to be a problem with the coolant flow..the top coolant hose gets red hot whilst the bottom one gets warm..the temp gauge stays about central on the scale..it seems as if the water is not circulating from the engine to the rad,could this be the thermostat not opening or the water pump not flowing properly..How can i test these out easily..The car is also running in safety boost, does the ecu do this when the coolant gets too hot...Cheers guys...steve

if the top hose is hot and the bottem one warm and your gauge is in the center then your radiator is working and sounds like you dont have a flow problem. the top rad hose will only start to get hot when the thermostat has opened. But the stock gauges are sh*te and shouldnt be relied upon too much

 

 

If the ecu is showing a fault code then its either a problem with the sensor or the cabling going to it, it will not show a fault code if it gets to hot. also a faulty coolent sensor will put the ecu in safe mode