Question about 1999 Lincoln Navigator

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I have a coolant leak on the right side of a 99 navigator by the starter . it leaks only when i turn the vehicle off . could it be a freeze plug

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When the vehicle turns off - the heat causes the coolant to expand, and there is (should be) nowhere for it to go but out the overflow into the reservoir.
I believe the freeze plug is on the passenger side in the '99.
Where is the fluid coming from??
The engine block? A Hose? More investigaing will need to be done on your part.


Posted on May 26, 2010

  • joedboxer_jm May 26, 2010


  • blueextc3221
    blueextc3221 May 26, 2010

    it may appear to be coming from that area - however the starter seal is for gear oil - not coolant - so it must be originating elsewhere.

    Gravity will pull the coolant down - so look for the spot highest on the engine that is wet.

    Concentrate on tubing, hoses, and VERIFY it is coolant - not some other fluid - like brake fluid.




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