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Water pump not circulating

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Possible impeller broken on pump possible clogged cooling system.

Posted on Mar 26, 2014

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The water isn't circulating


Hi Dayn:
Hmmmm.......
Just a couple of comments for you to add to your pondering.
- The water (engine coolant) is circulated by the water pump.
- The water pump is turned by a drive belt from the crankshaft.
- The coolant can only circulate when the thermostat is open.
- Sometimes a freshly filled radiator can have an air lock that prevents the coolant from reaching the water pump.
So,
We need to go through the system to find what part is not doing its job.
Hope this helps.
WORK SAFELY!!!!!!!!!!!!
NEVER open the cap on a hot radiator.
Cheerfuls.

Dec 02, 2015 | Cars & Trucks

2 Answers

Can a water pump make water to return to the water bottle


If the engine overheats from a thermostat
stuck closed or bad head gasket

Aug 10, 2013 | Cars & Trucks

1 Answer

My carkeeps overheating all the sensors were checked and they are okay. The fan pump is working fine and the thermostat and water pump are new. Water does not appear to circulate?


Hi, well most likely this is the water pump? This is the commonest thing if the water isn't circulating. The pump will have to be replaced.

Jul 04, 2011 | 2002 Lincoln LS

1 Answer

Because if you put the thermostat at 300m water does not circulate when the thermostat is new


So you changed the thermostat?
Water will not circulate while engine is cold. As it reaches normal temp it should open and circulate. If it is overheating when warmed up, and still not circulating, then either the thrmostat is bad or wrong type, or it was installed wrong and somthing is blocking it.
One other thing possible is the water pump is broken, but usually when pump is broke, it leaks, from the back of the pump.
You could check the belt is correctly driving the water pump.

Apr 10, 2011 | 1999 Chrysler 300M

1 Answer

1996 ford taurus. Should the water pump pump water even when cold.


Yes it does pump water at all times... when the thermostat is closed it will only circulate water through the engine, when the thermostat opens it will circulate through the engine and radiator cooling the water that was warm from engine heat.

Jan 04, 2011 | Ford Taurus Cars & Trucks

1 Answer

My mazda 2005 overheat but if i put high rpm like 3000 the temp. go to normal i allready change the termostat and water pump


Sounds like you need a new water pump. When you turn the engine at high rpm's then the pump is pumping faster and circulating the water. But isn't circulating the water good enough at lower rpm's

Sep 16, 2010 | Mazda MPV Cars & Trucks

1 Answer

96 nissan altima with ne water pump and thermostat


1. Improper water circulation: Sometimes, eventhough you are sure that you have enough water on your radiator, your car still overheats. It might probably be that the water is cannot circulate properly, which results to improper cooling process. There are several reasons for this which you can discover by yourself. To verify if the water circulates properly, start your engine without the radiator cap. If water circulation is good, you should notice that the water pops smoothly over the top but still retains the amount. Another way to check, detach one of the ends of your radiator hose from your radiator and see if water flows continously over.
If water doesn’t circulates well, check the thermostat if it’s open. It should be open, meaning clean, and the water can pass through it.
If thermostat is clean and still the water doesn’t circulate properly, then you have to check the water pump. That’s probably where the problem is. A little leak on the pump will cause improper flow of water through the radiator system.
If you are sure that the problem is not about water circulation, another thing you can consider is check the engine oil. Very low amount of oil can cause greater friction of the mechanical system of your engine. If it’s not time to change oil yet, you can add over some amount of oil until advisable amount is reached.
While we can’t be always sure about our engine, especially if it’s not new, we should be prepared when it happens. Bringing extra gallon of water in your trunk will surely help.

Jul 28, 2010 | 1996 Nissan Altima

3 Answers

Can a bad water pump cause other things to not work properly? like the heat? and will it over heat?


Yes That is exaxtly what will happen, If the water pump is not pumping the antifreeze throught the system then not enough hot water will get to the heater core to give you heat inside the cabin and also not enough hot water will get to the radiator to get cooled off thus the overheating. Hope this helps.

Dec 08, 2009 | 2001 Pontiac Montana

1 Answer

1990 bmw 525i overheating ..


No such pump! Make sure you have anti-freeze in the radiator. It circulates better than just water, because water boils and turns to steam (goes UP) proper antifreeze helps it not have pockets of steam/air.

Nov 29, 2008 | 1990 Isuzu Trooper

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