Today i warmed up my car and when i got in i saw the engine temperature light is on so i checked my coolant its full and didnt see steam or leak anywhere so i just took the car for a drive anyway. My temperature gauge was not showing a sign of overheating it was sitting on normal the whole time and the heat blows hot so what can it be? i drove the car for like 45min and no sign of trouble just the temp light is on and i noticed when i hit bumps it flickers sometimes it goes off n on to....