|
in some cases the fins on the water pump actually just go. so while the pump is turning its not really moving the coolant. another guess is you have a leak and lost some coolant or your burning some coolant. if your burning some coolant through a head gasket or if you have a leak there is a chance you could have gotten air into the system. allowing air bubbles to come in. to getride of the air bubbles start your car and remove the radiator cap add coolant to system and watch for the bubbles to keep coming when it stops bubbling put the cap back on and shut off the car.
or it could be what roflwaffle posted
|