The water pump is worn out. Time for replacement.
Most likely cause is a faulty coolant temp gauge located on top of the front of the water pump, toward the front of the engine, or the water pump is bad. The fan is attached to the water pump and the drive belt rides on the water pump pulley. The reason the engine returns to normal idle when moving is that air is circulating the engine, and the coolant, and the sensor detects that the engine operating range has been reached. to fix, drain the coolant, remove the temp sensor, replace, and refill the radiator. If thsi does not solve the problem, its the water pump. Tim
Low coolant? Radiator plugged or restricted? Water pump not circulating coolant? Hoses collapsing? Thermostat not opening?
yes, leaking coolant is what happens before the pump totally dies, then you have overheating and possible engine damage soon after the leaking.
A lack of water in your cooling system will cause your 2002 Pontiac Sunfire to overheat. A malfunctioning thermostat can also cause it to overheat.
The light is not a coolant light, it is a temperature light which comes on when the temperature of the coolant is above the limits. In other words you engine is overheating. Can be defective thermostat, bad water pump, clogged radiator, or blown head gasket.
it is probably your water pump
Yes. If a water pump is leaking, it leaks anti freeze. Anti freeze, (coolant) can also leak from the radiator, or from water hoses.
If it leaks coolant or the bearing is loose, it has failed.
That is the water pump weep hole. Your water pump need replaced.
Sounds like no coolant flow to me. Check for missing water pump belt or stuck thermostat, but not as likely as: Most likely is cracked or dislodged water pump impeller. Replace the water pump.
Usual failures are coolant leaks, or a loose bearing.
It could just be that the water pump is not properly working. Have you checked all the could-be causes for your car overheating if not then do so.
No, and if your vehicle doesn't have a coolant filter, it will introduce a foreign matter into your engine and water pump, which will compromise your water pump and possibly clog up the coolant jacket. Whoever told you to do this - never take advice from them on anything, ever.
Most, if not all, the coolant in the radiator reservoir will pour out when you pull the water pump. Drain the radiator and save the coolant (if you plan to re-use it) before removing the water pump.
Tighten the clamp on that hose. If it still leaks, remove the hose and inspect it. It may need replacing. Now if you are saying there is coolant leaking from the top hole on the water pump itself, replace the water pump, as it is defective.
Check coolant leaks with a visual inspection. Clean the engine, then see where the coolant reappears. Look under the water pump. Check engine oil to see if coolant is leaking into the oil.
3.1 engine leaks at the intake gasket