2003 Lincoln Navigator Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Lincoln Navigator

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2003 Lincoln Navigator Problems

Check Engine Light Due to a PCV System Vacuum Leak

A vacuum leak from the PCV grommet vacuum leak can cause the Check Engine Light to illuminate. The molded rubber hose connections may crack and collapse, causing the vehicle to run roughly. A damaged PCV hose will require replacement.

Corrosion on Battery Cable Ends

Check the battery cable ends frequently for corrosion. Corrosion can easily migrate under the cable insulation and cause numerous electrical faults and drivability issues.

Rough Idle and/or Engine Stalling Condition

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.

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2003 Lincoln Navigator Questions

What cause the oil pressure light to come on (1 answer)

Oil pressure light came on and has a tick in it now
And using oil

My car looses power doesnt do the shift and trembles and turns off andnot run (1 answer)

my var doesnt run it soons like its drowning
It barley moves and at the end it turns off
It feels like its to hot arond the moter but nothing shows in the meters

"Check charging system" error comes on while slowing, braking or coasting. (1 answer)

"Check charging system" error comes on while slowing, braking or coasting. Today, while accelerating, radio and instrument panel turned off twice.

Alternator is less than a year old, but tested, and it was at 14.2.

Any ideas?

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2003 Lincoln Navigator Reviews

I have had to rebuild my Transmission and Motor.!!! The truck is currently at Five Star Ford having the fuse panel replaced due to poor design where the panel is taking in water burning out the main relay switch. The automatic door locks stopped working. Due to water leaking in.. the sun roof stopped working. This truck is like some women..they may look good but inside she ugly. More trouble th...
probably had the potential to been one of the best full size suv. However my 2003 had minor electrical sensors failing from day one, like doors then runing boards then suspension replaced rear and compresssor. Dealer was inept changed sensors when the air bags was gone. now i have replace four coils and spark plugs engine still running lean. So they told me to get rid of the vehicle after they ...
Some problems with suspension when it get cold the truck won't raise up right away! I don't know what to do about that.

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