Question about 2003 Lincoln Navigator

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Noise from 2000 navigator

I just replaced the heating core in my 2000 lincoln navigator and after that when turn the engine on there is a noise like water running from the engine or close to the heating core comparment and even when the truck is in neutral still that water running noise. is that normal or what is that

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  • raycastro78 May 18, 2009

    I put the insolation that came with the heating core around and maybe the heating core is not quite full, what about if I turn the heating system on for a while and that way keeps getting water into the tank

  • raycastro78 May 18, 2009

    I will try that tomorrow thanks. But what should I do next if still the water noise

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  • 335 Answers

Sounds like some insulation was not reinstalled. OR the cooling system is not quite full. That noise may be air pumping through the system. Sometimes you have to run the engine untill warm then let cool and check the coolant level to be sure that it is o/k.

Posted on May 18, 2009

  • Moe May 18, 2009

    You must make sure that the cooling system is full and that you have operatered the heater and found that everything is working. After the engine cools down, check the level in the rad. Make sure the rad is full. The coolant expansion tank only shows full when engine is warmed. When the rad is full cold then the coolant tank should be at "Fill cold". Top up if needed. Does this help?

  • Moe May 21, 2009

    If I was any help , it would be nice to be rated. If I was no help , we could reseach other things. Moe

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Posted on Jan 02, 2017

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