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New water pump, still hot engine

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Decided to change the water pump on my turbo. Just in Case of a possible

Failure and because the temp went above middle on low rpm.

Today i take the car back. Driving in city Traffic . Stop and go. Temp went higher and higher

In Directon of red area. Switched on heating to bring temp down.

Called the mechanic and ask him if he refill the System with vacuum Equipment .

Any idea what it can be? Thermostat maybe?


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Was there a specific time or event that made the temperature sit higher than normal?

What temperature did it display when you originally bought the car?

Hi !

When i drive home from the shop yesterday i didnt feel it at the beginning . Just when i enter the city and i had to stop on many Traffic lights i noticed the temp went up really fast

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Are you sure it's not either the gauge or the temperature sender that's faulty?


It's a good idea to get an infrared thermometer gun.  Something like this:  




This will enable you to check that the gauge is giving an accurate reading for coolant temperature.

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This i didnt check but as the Fans are running full speed and under the hood its really hot i believe the gauge is ok.

As i wrote in my first post, just switching on heating on high temp makes the gauge going back to the middle

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Car was in shop again today. This time they take out all coolant and refill it in with vacuum pump . Until now car Runs ok with normal temp.

Onother sign they didnt do it in the right way yesterday. Makes me angry. Really time to think about to change the mechanic.

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When you took the water pump out, were there any fins missing?


Cooling systems aren't all that complicated.  Over heating problem - install new pump - still overheating.  I would bump a failed water pump to the bottom of the list of possible culprits at this point.  Fans kicking on to high speed tells me the radiator temp sensor is reading correctly, and not likely a faulty sensor.  If you haven't done the thermostat - that would be my number suspect at this point.  

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Good to hear that it is fixed.

Strange though, as I have heard it said that this cooling system was supposed to be self bleeding.

Self bleeding? Dont know how this should work.

What i read afterwords this air pockets are really dangerous for our Engines Health . Heat is punctual very high and could cause serious damage. I believe my temp problems started already when they replaced the water cooled alternator.

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