What happens if water pump pulley goes bad?
If the pulley is loose it can cause the water pump belts to shake and develop more heat. When this occurs, the belts can crack or literally shred; as most of these belts are made out of rubber and nylon cords for strength.
What does a water pump pulley do?
The water pump pulley on a car helps to provide the power that this part needs to push the coolant through the engine. Every time that your car is cranked, the water pump pulley will have to spin freely in order for the car’s cooling system to work properly.
Should water pump pulley have play?
The water pump pulley should not have much “play” in it at all. Any side to side movement would indicate wear in the shaft bushing and likely be a leak at some point in the near future. Idler pulley has a bearing in it that has a little play in it, but not much.
Why is my water pump pulley not spinning?
In most cases, the water pump is binding up, causing the pulley to stop spinning. Replacement of the water pump will fix your problem. The pulley will need to be replaced if there is damage from the belt on it. If there is no damage, then the pulley can be reused.
Can a bad pulley cause coolant leak?
It is more likely that something above or behind the idler pulley is leaking coolant and migrating to other areas, like the idler pulley. The cooling system should be pressure tested by a certified technician, like one from YourMechanic, to find the source of the coolant leak.
Can a bad water pump pulley rattle?
Rattling Noise Worn out bearings are the most common cause of water pump failure. Water pumps move a huge amount of coolant over time, and they simply wear out. Ask your customer if they loosened a belt tensioner and checked both the tensioner(s) and water pump. Belt tensioners can also rattle when they are worn out.
Why is my water pump wobbling?
When the shaft bearings deteriorate, excess play results in the hub and pulley. Any wobble in the water pump pulley while the engine runs points to bad shaft bearings. Worn shaft bearings require water pump replacement.
Can you turn a water pump pulley by hand?
The only pulleys you should be able to turn by hand when the serpentine belt is not in place are: the water pump, alternator, and power steering pump pulleys. That you cannot rotate either cam or crankshaft pulleys by hand is completely normal.
How much does a pulley cost?
The cost to replace the idler pulley of your driver belt will usually be somewhere between $80 and $200. The cost for the new part should only be anywhere from $40 to $90, while the cost of the labor will be anywhere from $40 to $110.
How much is a water pump pulley?
Dorman: Water pump pulleys from Dorman are available as OE replacements. Their standard prices range from $33.98 up to $55.77, all with Dorman’s lifetime limited warranty.
