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Problems with cars
One of the most common problems with cars is the failure of the water pump, on higher mileage vehicles. The replacement of the water pump provides a few challenges for the do-it-yourself auto repair mechanic. One of the most common car problems that you will run across on a high mileage vehicle is the leaky water pump. Vehicle manufacturers are making the same quality water pumps that they did many years ago. The problem with this is that vehicles today are used well over 100,000 miles. Even the best water pump will need to be replaced at around this mileage. This common car problem will affect almost every vehicle made today, whether it is a Toyota a Chevy or Mercedes-Benz. A water pump just will not last forever. Since the water pump failure is one of the problems with cars that affect so many different models, I really can't get into the exact replacement of the water pump for your model. There are many online auto repair programs that can guide you step-by-step through the replacement of your water pump. My favorite reference manual would be All-Data online auto repair manuals.
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What I would like to talk about today is what happens after the successful replacement of the water pump. Again this will differ on many models, but one of the major problems with this repair is the refilling of the cooling system and removing the air from the system so that it flows properly. One of the most common complaints that I receive is that after the water pump has been replaced that the car is overheating.In many cases I have found that the cooling system has become air bound and will not flow properly. Again, the removal of air from the cooling system will differ from model to model. The key point to remember here is that when you refill the cooling system after a water pump replacement is that the thermostat is in the closed position. This is the main cause of an air bound cooling system after the replacement of the water pump. After the vehicle has completely warmed up and the thermostat has opened, allow the vehicle to cool down completly and then refill the system. Also while the radiator cap is off and the vehicle is cool give the upper and lower radiator hoses a few tight squeezes. Some coolant may drip on the ground but this is a good way to shake loose some traped air. Problems with cars don't get burnedAgain make sure the vehicle is completely cool before you remove that radiator cap and take it off very slow! The problems with cars are that some vehicles are very stubborn about removing air from the cooling system.The above procedure may have to be performed more than once. On the other hand, some vehicles have a self-bleeding cooling system and an air bound system will not be an issue on those models. And some vehicles have a bleeder valve to let the air out (like on chevy's 3.1 & 2.8 L) This is why I always recommend consulting a professional auto repair manual for all of the specific details for your model. I just wanted to make you aware of the most common problems with cars that I have seen. If you replaced your water pump, and you continue to have an overheating condition bleeding the air out of the cooling system should be your first concern. Problems with cars Free monthly newsletterGive this page a bookmark and share it with others. 
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