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1999 Lincoln Navigator P1299 CODE

Tiny
CHILIBYRD
  • MEMBER
  • 1999 LINCOLN NAVIGATOR
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Hi,
What does this mean? I looked up the diagnostic on your site. But, does it mean I need a gasket, filter? Just looking for a little more info. So I can be well informed when and if I take it to a repair shop.

Thanks,
Lynda
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Monday, June 30th, 2008 AT 1:07 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It means the engine is running too hot, can be low coolant, bad thermostat, or anything that will cause an overheat condition. If it's a 4.6 these developed a leak in the front upper intake manifold. You may need a pressure test.
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Monday, June 30th, 2008 AT 5:41 PM

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