Question about 2003 Lincoln Navigator
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Posted on Jan 02, 2017
SOURCE: 2004 navigator
Have you used a NOID light to see if injector is getting a signal, the NOID lite is a little test tool that plugs in the injector connector and flashes when eng is running is signal is present, a vacuum leak can cause this as well, also the injector can be faulty, check the compression 1st, then do the other tests, I was a dealer tech so I had access to a piece of test equip called a SBDS, it could quickly give me all the info about the miss-fire, most case knew the problem in 10 minutes, of course the machine cost $75,000 so in a independent shop it is out of the question. Good Luck
Posted on Sep 12, 2008
It could be a fuel injector problem on cylinder 5. Sounds like a failed injector. Run a compression check on that cylinder to make sure you have at least 100psi. Anything less than that would lead to either a burnt valve or a piston ring issue. Doing a compression check first will save you a lot of money.
Posted on Apr 10, 2009
this is a common problem with these ford engines. this particular ignition system is a coil on plug system meaning there is a individual ignition coil on every spark plug.i am going to assume you don't have any cracked spark plugs, and they are gapped correctly and you would have a dtc(diagnositic trouble code). there are two common issues 1- you have faulty ignition coil boots which is allowing the current to arc through the boot. 2- faulty ignition coil. with no check engine light i would recommend allowing your lincoln, ford dealer to perform a diagnostic scan as they can test your individual ignition coils to pinpoint the fault. coil may be breaking down under load and or heat. your local independent repair shop diagnostic scanners are not capable of testing individual ignition coils and in turn they may recommend replacing multiple coils until problem is fixed. hope this helped, if more info is needed feel free to contact me.
Posted on Dec 08, 2010
your distributor could be bad from the pickup coil or the ignition module or the distributor its self id replace the whole distributor including the cap and spark plug wires that should it
Posted on Sep 25, 2012
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