Seven problems related to engine and engine cooling have been reported for the 2003 Lincoln Navigator. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Lincoln Navigator based on all problems reported for the 2003 Navigator.
The contact owns a 2003 Lincoln Navigator. The contact stated while driving 35 mph, there was an abnormal sound coming from the engine compartment, prompting the contact to pull over to the shoulder of the roadway. The vehicle was towed to the residence. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the rocker arms, and that the engine lacked adequate compression in cylinders #2 and #3, resulting in engine damage. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 75,000.
Coming home from a trip engine started to misfire. Come to find out the # 3 spark plus exploded destroying the coil and and threads holding the spark plug in. Causing the need to re tap the threads.
Just driving in a 45 mph, when heard loud banging coming from engine. Pulled over and had car towed in for repair. Engine blew out a spark plug.
Loss of brake fluid, leaked through to cruise deactivation switch into cruise systems and electrical components causing corrosion which caused a short. Had trouble with cruise control working over time lead to higher flow of current that overheated and caused fire at switch under hood. Ford speed control deactivation switch fire. The fire originated in the area where the speed control deactivation switch is located (left rear corner of the engine compartment at the master cylinder. There was evidence of speed control deactivation switch failure prior to the fire including inoperable speed control, repeated difficulty shifting out of park.
My 2003 Lincoln Navigator has shut down completely three times in the last 6 weeks. Two of the occasions happened on the interstate while driving about 55 mph, the third instance happened in my subdivision driving less than 30 mph. After pulling the truck over to the side for safety the truck will not start immediately but will start after resting about 7 minutes. When the truck shuts down several lights on the dashboard light up. I explained the issue as well as I could to my local Ford / Lincoln dealership in madison, TN but they could not find any issues with it saying that no codes were showing. I also took the truck to a goodyear service repair in brentwood, TN but they also could not diagnose the problem. After searching for this type of issue on the internet I found numerous customers that have had a similar experience, some saying that the issue is related to the "fail safe" security option kicking in while a person is driving. The issue of having my truck shut down completely on the interstate is dangerous and I would appreciate help on getting the issue resolved as soon as possible.
2003 Navigator, 99,000miles - spark plug blew out - engine lost power, gas spilling out of engine, during the transport of 1 adult and 4 children. 1. One week prior to the incident, the truck was given a full service for 100k miles, less then 1000 miles later, the car is rendered inoperable, and the dealer offered to give $2500 on trade (the amount of the 100k service) or repair the engine for $5500. 2. Car does not run 3. Nothing is fixed yet, Ford will not admit a problem and will not assist the dealer.
While driving 70 mph the vehicle would suddenly shut down. This problem has occurred four times. The vehicle would lose power steering and power brakes. The service dealer tried various fixes but the problem remained the same.