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My leo smart head water pump started coming on when no water are in use and then it came on and would no turn off

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I have a 2005 chevy equinox it has a leak, it rain hot once I put water in it,the temperature gauge goes from hot to normal as im driving then when I come back from driving the coolant fan comes on.

Hi Anonymous:
Since you did not ask a question, all I can do is comment on your situation.
- It is important that you locate and stop the leak.
Possible sources:
- Failed water pump
- Damaged radiator
- Damaged (radiator or heater) hose or loose clamp.
- Failed head gasket
Water as a coolant is not as efficient as anti-freeze so the engine may heat up sooner. If the thermostat and radiator are functioning as intended, this may not present a problem.
When you are driving, air is flowing through the radiator so the fan does not need to be running.
When you are stopped, there is no air flow through the radiator, so the car (which thinks that it is smarted than humans) turns on the fan, puts on sunglasses, and says, "I'm cool".

Sep 14, 2015 | Cars & Trucks

1 Answer

Gets hot after replaced thermostat, radiator cap and hoses

it could be the water pump but i think it well be your cylinder head or cylinder head gasket that is beginning to malfunction better get that fixed soon or it can get really bad if your cylinddr head messes up

Sep 07, 2012 | 2001 Chrysler Concorde

2 Answers

I think water pump went out, but before all that work was to be done I noticed that I put water in the radiator and once I start the car water comes out from the water pump nipple and alot of water comes...

No it is not a cracked head, your water pump has a pressure hole to give you an indication that the pump is getting there. when the motor is running the pressure builds up and squirts the water all over, resulting in misleading you.

Sep 09, 2010 | 1993 Chrysler Lebaron

2 Answers

My 1996 chevy suburban wont start

If you plugged the original leak (which sounds like the head gasket) and then the radiator was leaking, and you are having water coming out of the exhaust, then you need to replace the head gaskets. It sounds like you had a blown head gasket from the start. Here's what to do.

1. Replace the head gaskets (will need intake manifold gasket as it need to come off for this procedure).

2. Replace thermostat, radiator cap (if radiator is still good)

3. Replace water pump; the water pump may have stopped working (mechanical), which in turn caused the pressure to build an blow the head gasket (the cause of the pump would be a bad thermostat. If the truck was overheating, then the thermostat was bad to begin with, then the pump, then the head gasket, so then the only place left for the water to go is out the exhaust.

Here is a list of replacements:

^ water pump
^ thermostat
^ head gaskets
^ valve cover gaskets
^ radiator cap (if radiator is good)
^ radiator : if leak from cap caused any damage to radiator (should still be good)

**Also check the radiator hoses to ensure they do not have any "bubbles". Hot water over time (with anti-freeze) erodes the inside of the hoses, and begins to "dig" holes and grooves in the hose, which evetually cause leaks. Consider replacing these as well for safe measure.

Please, let me know if you need further assistance.


Guru, Premium Expert @

Jun 22, 2010 | 1996 Chevrolet Suburban

2 Answers


You need a belt and water pump. Hope everything works out for her. Good luck!!!

Mar 15, 2009 | 1987 Nissan Pathfinder

1 Answer

I dont have heat and engine over heats.While running coolant gets pushed into my resevior tank and almost over fills it. When I turn it off Radiator steams and coolant goes back into radiator still have no...

It's not the water pump. pumps can leak and shaft bearings go bad, but even then it is pretty much impossible that the pump won't pump. I'd start by changing thermostat. When re-filling, add coolant slowly and just when it reaches operating temp, shut it off for about two minutes. re-start, turn heater on high and continue filling till electric fan comes on (if you have one) at that point turn off again as before. Re start and run with cap off for about 15min. If overheat continues, remove radiator and flush, and bring to a shop to determine if there are any hydrocarbons in the cooling system. If so, there is a problem with either head gasket or head. (likely you will have fixed it before you get this far.)

Mar 04, 2009 | 2002 Jeep Wrangler

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