Checking and adjusting the AC compressor clutch air gap can extend the service life of the AC compressor.
Problems for specific Lincoln Navigator years:
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Repairpal verified 1999 Lincoln Navigator problems
Erratic engine coolant temperature or intermittent overheating can be caused by corrosion inside the water pump. The impeller may spin on the water pump shaft or the impeller may corrode. Either condition reduces coolant circulation resulting in engine overheating.
The lower intake manifold is plastic and may come apart completely.
Corrosion can form at the grounding points near the battery. There may be electrical faults and the engine may crank but not start.
Prior to jacking or lifting a vehicle with air suspension, you must turn off the suspension switch. The switch is generally located in the trunk or on the right side of the passenger foot well.
Due to age and possible damage during removal, it is recommended to replace the spark plug boots when replacing the spark plugs,
An exhaust leak may develop in front of the catalytic converter. This type of leak should be corrected as soon a possible to avoid damaging the catalytic converter.
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.
Even though the manufacturer does not call for regular servicing, our technicians recommend servicing the power steering fluid regularly.