A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

Coolant problems!!!!

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Old Jan 5, 2013 | 06:45 AM
  #1  
Slayer1979's Avatar
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Default Coolant problems!!!!

My audi had a failure where the fitting for one of the pipes that connects to the thermostat housing , i replaced the thermostat and also the coolant bottle and cap because the coolant bottle actually popped and was bubbled at the top , but i still have this problem where my temperature gauge for the most part always sits a 0 , only occasionally it will sit at 90 where its supposed to be and although i cant see any leaks everytime i sit in traffic i get steam pouring out of my bonnet and when i switch the car off then i get all the coolant leaking out the bottom of the car yet i just cannot see where its leaking from and when i fill it up again it doesnt leak , this problem only happens in stop start traffic , i have filled the coolant backup and turned the car on and revved it between 1500 and 2000rpm till engine is warm so it is not an air bubble in the system , has anybody else ever had this problem ? would love to know where this mystery leak is and what the cause is
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Old Jan 7, 2013 | 07:20 AM
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lyleswk's Avatar
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Sounds like a water pump to me.
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