Hi, Ive recently replaced just about everything for my cooling system on my grand prix. (New radiator, hoses, heater hose fittings, water pump, thermostat, coolant temp sensor). . The car has 185k and the cooling system was due for a overhaul. After replacing everything on the coolant system, the temp gauge seems to be giving an incorrect reading in the car.. it will fluctuate from about 220 to about 245 degrees in the car (which is pretty damn close to overheating according to the temp gauge), and i laser temped the thermostat housing, the block, heater hose fittings, and the readings never exceeded 215.. What would cause the gauge to read high like that? faulty coolant temp sensor? i have no service engine lights, low coolant lights or anything.. everything seems to be in good working order besides the gauge. Any help would be greatly appreciated. Thanks!
* also i bled the system thoroughly using a bleeder funnel and opening the bleeder valve until a steady stream of coolant came out.
