2004 Lincoln Navigator Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Lincoln Navigator

2004 Lincoln Navigator Problems

Problems With EGR System are Common in High Dust Areas

In high dust areas, problems with the EGR system are common. The filter for the EGR solenoid may plug and cause the EGR to activate when it should not; this can cause the engine to stall. The dirty filter should be replaced to correct this concern.

Adjusting AC Clutch Air Gap

Checking and adjusting the AC compressor clutch air gap can extend the service life of the AC compressor.

Replace Spark Plug Boots When Replacing Spark Plugs

Due to age and possible damage during removal, it is recommended to replace  the spark plug boots when replacing the spark plugs,

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2004 Lincoln Navigator Questions

My navigator has a ruff idle, stalls won't pick up speed maby 20 slowly into 40 (1 answer)

Miles an hr. I was thinking maby manifold or she valve, does have an vacuum leak but my mechanic says its an egr replacement or connector plate issue, no part store seems to know what he means but he's standing by the diagnosis. Lost!

my vehicle is missing periodically (2 answers)

My navigator hesitates or misses periodically (1 answer)

Does not seem to lose any power. I was told that if it were plugs or injectors it would do it all the time. I was also told that my torque converter could be going out and to add friction modifier to solve the problem. Could it possibly be a my fuel filter?

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2004 Lincoln Navigator Reviews

I bought my 04 Nav new in 04 and I have been very happy with it with these few exceptions. The air suspension on these SUVs are not good at all. Every person I have known that has had one has had problems with the air bags and this makes the pumps run all the time, eventually burning them up. I paid thousands to fix the system twice and then replaced it with a standard system. Other than...
I have a 2004 lincoln navigator i notice my air pump keep running,all the time after two weeks of that, one morning my front end was lower then the back, i turn on the truck, and sit there for 15mins the front rose at the normal level, after two weeks of that i took it to the local dealer ship, they told me the air bag rings was bad the cost 489 dollars, when i drove it home i notice my air p...
Have had the vehicle for 2 yrs and besides brakes and tires it has been good.

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