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 ProblemsCheck 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.
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.
2003 Lincoln Navigator QuestionsWhat 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 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. 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.