Question about 2000 Lincoln Navigator

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My heater does not work,inside of the panel show well, botton up,

My heater does not work, inside of panel running very well botton up and down show well, but heat don`t came out,

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I'm not an expert, but I took my 2000 Lincoln Nav to the shop and they told me the issue is that my accuator is not opening properly to allow the heat to go through; therefore, it's overheating. That's why I can feel some heat on the front in the back. All vents, including the rear vent blows strong, but they blow very cold.

Unfortunately, I'm also having an issue with my engine intake manifold or intake gasket being cracked causing anti-freeze to leak out of my tailpipe and smell badly through the vents - even on defrost - so until that's fixed, I'll never have heat.

Posted on Dec 30, 2009


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Posted on Jan 02, 2017


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1 Answer

Heater runs but does not heat

If it is blowing air at different speeds inside the car, I think you are saying the blower works fine, but blows no heat.
If it is running different speeds but is not blowing inside the car, you probably have a plastic flap inside the heater assembly inside the car that is not opening, not allowing the air to come in.
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left to right...
1. empty
2. e flashers
3.horn, brake lights
4.clock, trunk light, inside light, radio
5. rad. cooling fan relay (AC only)
6. right side running lights
7. left side running lights
8. right high beam and indicator
9. left high beam and indicator
10. right low beam
11. left low beam
12. reverse,turn signal and inst panel
13. main and transfer fuel pumps, auxiliary air reg., ox sensor heater
14. license plate and glove box light
15. wipers
16. rear defogger
17. heater blower (no AC)
18. cig lighter
19. rad cooling fan (no AC)
20. Heater blower (AC)
21. rad cooling fan (AC only)
22. empty
23. Ox sensor, idle stabilizer,seat belt warning relay, (Digifant only, control unit, idle boost control, idle boost valve)
24. inst panel lights, heater control lights
25. reading lamps
26. empty
27. empty
28. empty

Hope this helps...;-)

Apr 17, 2009 | 1992 Volkswagen Fox

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If the hoses are not both hwarm then you may have restricted flow either in the hoses, the control valves or in the core.
I they are both warm then check the following.
I had a cold car that the hoses were reversed on and the hot water was going into the top of the heater core. I solved the problem by reversing the heater hoses to have the hot water going into the core on the botton and returning to the motor thru the top line.
Good Luck

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