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Resources for the Repair and Maintenance of your 2003 Lincoln Navigator

2003 Lincoln Navigator

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2003 Lincoln Navigator Problems

Electrical & Lights -- Verified

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

Exhaust & Emissions -- Verified

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.

Engine -- Verified

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.
 

Suspension & Steering -- Verified

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.

Exhaust & Emissions -- Verified

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.

2003 Lincoln Navigator Questions and Answers

myrna, 2003 Lincoln Navigator, Fayetteville, AR

We were driving to Arkansas from Dallas this past Sunday. After a brief stop to get a drink (left engine running) we were pulling out and there was this loud noise like maybe a belt had broken an...

myrna, 2003 Lincoln Navigator, Fayetteville, AR

What would be cost for materials and labor to replace driver cylinder head, ignition coils #7 and #4, and replace spark plubs

BigNasty, 2003 Lincoln Navigator, Chicago, IL

The running board on the driver's side is malfunctioning, the light in the dash says the door is ajar but it is not. Since the door seems ajar the running board won't go in. What is causi...

roger03nav, 2003 Lincoln Navigator, San Antonio, TX

I HAVE A 03 LINCOLN NAVIGATOR THAT I TOOK TO A SHOP BECAUSE ENGINE LIGHT WAS ON AND IT SHAKING AND THE DIAGNOSES WAS A VACUME LEAK SO WE HAD IT REPAIRED IN THE PROCESS OF CHANGING THE HOSE RADIATO...

candie, 2003 Lincoln Navigator, Lake Charles, LA

My car is not idling very smooth. Other than that it is great. What can cause this?

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2003 Lincoln Navigator Reviews

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 replace all my vacuum lines couldnt find the problem . So while car shopping for Toyota 4 runner no more american car for me i actually thought of chev tahoe and decided not to . Went to a Ford Dealer and they are charging me two grand to fix my two cats and replaceed four spark plugs change the boots and should solve the prblem . My engine has been running lean and to rich causing coils and plugs to fail but lincoln dealer was inept.

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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