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Lincoln navigator sputters over 50 mph - 2006 Lincoln Navigator

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Posted on Jan 02, 2017

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SOURCE: 2002 Lincoln LS V8 sputters while going up hill at

this may be caused by the engine "coil-packs that send the spark to your plugs" While checking make sure that there is no oil leaking onto them. This seems to be a common problem among the LS's.. Hope this helps.

Posted on Apr 28, 2009

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SOURCE: my 2003 lincoln navigator check

You need to get the computer scanned and the codes read. You could go to autozone to have the codes read. By your description I'd be willing to bet it has at least a p0300 code which is a random missfire. While it could be many things causing the missfire/sputtering the most likely culprit is spark plugs or the ignition coil as they are known to go bad commonly on those motors.

Unfortunately they aren't exactly a walk in the park to do. Navigators are one of the more difficult vehicles to replace spark plugs on as the cowl overhangs the motor quite a bit.

Posted on May 10, 2009

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SOURCE: my 2001 lincoln ls is sputtering at 40-50

Replace fuel filter, remove replace plugs, check plug wires, by removing one at a time and checking for spark, add some fuel injector cleaner, about a quart. One small can to 20 gal of gas or more is a waste of your money.

Posted on Aug 07, 2009

  • 5 Answers

SOURCE: 200 lincoln engine problem

i have a 2000 ls 6 cylender....replaces the head gaskets, all coils and plugs runs great......my car used to buck and jumo around 40-50 mph...no longer.....do yourself a favor if you are going to replace 1 coil replace them all.....once you haver the top of the engine apart you mighnt as well replace all the coils i got all 6 for 110 on ebay brand new....also be sure to get a good valve cover gasket i recomend fel-pro

Posted on Mar 11, 2010

  • 5537 Answers

SOURCE: 2003 lincoln navigator sputtering while driving

Hello, what you need to do first is get a scan of the engine. You can get a free scan at Autozone, Oreillys, Advance and perhaps your local places. Some faults will be recorded in the onboard computer, ask for Alternator test too. If you can get a Code number we can explain it for you.

Other defects, like Vacuum leaks and fuelpump pressure need different testing. This sounds like a EGR Solenoid going bad, but not bad enough to establish a check engine light. If you temporarily disconnect and plug the Vacuum hose to the EGR valve, you can drive it and see if the sputtering stops with the part eliminated. This may trigger a check engine light but the Code can be erased with a scanner or by disconnecting the NEG terminal of the Battery. The preferred method is to use a scanner(Autozone, etc.). I have the identical Year engine in my truck.

Vacuum leaks- use a spray water bottle and go aroung the gaskets on the Intake manifold while the engine is running. Also spray the Brake booster and if the RPM changes at either place you need to fix the leak or replace a part. Fuel pressure-This requires a gauge test on the fuel rail test port. Your fuel Regulator can be sticking, dirty fuel filter, fuelpump going out, the tests will tell. You can take it to an Independent or Dealer for these tests.

I hope you find my solutions helpful and please let me know what you discovered.

Posted on Dec 07, 2010

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