![]() ![]() Over time, the seal can go bad around the water pump. This can happen when you’ve allowed your Passat to run without coolant, or if you’ve recently replaced the water pump and dry started it without any coolant. These rings will quickly fail and you’ll be stuck with a slow leak from the water pump. Without water the fluid cushion between the two rings (shaft and stationary) is lost. This helps create a watertight seal that can withstand the pressure in the cooling system. Your Passat’s water pump is designed to rotate with coolant inside of it. Here are some of the most common problems that can lead to a bad water pump: If the gauge goes down, that would be a very strong indicator that the water pump is bad. If you have a temperature gauge and you see that your Passat is running hotter than it should be, try parking and revving the engine a bit (in neutral or park). The signs of a bad water pump are the same as a lot of other radiator components.Ī water pump that is struggling to function will cause your Passat to run hot. It can be tough trying to figure out if your Passat’s water pump is bad. Steam will rise out of the hood if engine coolant is leaking onto the exhaust. If your Passat has leaked enough radiator fluid, there won’t be enough left to properly cool your engine, and it’ll overheat. ![]() It can indicate a bad radiator, radiator hose, or thermostat housing as well. The problem is that low coolant can indicate a lot of different problems. If the coolant is leaking out of the water pump from somewhere, you’re going to get low coolant. Due to the relative low price of a water pump in relation to how much work it takes to get off, we recommend replacing the water pump even if the gasket is bad. You have to pull the water pump to replace the gasket. It could be the water pump or the water pump gasket causing the leak. Water leaking from around your Passat’s water pump is a sure indication that the water pump could be bad. You should be able to hear the noise clearly coming from the water pump.īe careful, there are a lot of moving parts around the water pump. Then, place the handle end of the screwdriver against your ear. If your water pump is easy to reach, you can gently place a really long screwdriver tip against it. The problem with most engine noises is that they are difficult to hunt down. Here are the most common symptoms of a bad water pump in your Passat:Ī noisy water pump can indicate that it has a bearing that is going out. The only question is how long will it take to happen. But it is a simple machine with moving parts, which means that failure will inevitably strike. It is possible for the water pump to last for the entire life of the vehicle. Taking a look at the health of the drive belt is always a great place to start if you are trying to figure out if your Passat’s water pump is bad. If nothing turns it, it can’t pump any water. ![]() Typical signs of a bad water pump include overheating, white smoke, a bad smell, rough idle, and more.Ī water pump works by pumping water through the engine. If it doesn’t pump water through the engine, it’s going to overheat and do a lot of damage. Your Volkswagen Passat’s water pump is one of the most crucial parts of the engine. ![]()
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