Question about 2003 Lincoln LS
Have you replaced all 8 coils and plugs? I have found it best to replace all at once as one that is marginal makes the others work harder. Also, make sure that coil is Motorcraft brand and not aftermarket. The computer and aftermarket coils do not play well together
Posted on Apr 14, 2014
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Posted on Jan 02, 2017
SOURCE: engine light - cylinder 2
You will only have (1) bad COP Ignition Coil, at the most
The Spark Plugs are not an issue at all ,unless they are in the
motor over 60,000 miles or more than 3 years,& not the cause
of the misfires.
You can replace a coil yourself in 15 min
They cost $59.00 tops at the auto parts store
On a V8
Wells (duralast/autozone) C1234 Both the same coil
On a V6 you can look on Wells web site or a lot of
If you have a V6 & most L/S probably are & you have
to do the right side of the motor,then the upper intake has
to come off ,to do coils or plugs
I own a 2004 LS & wouldn't let anyone touch it
Very few people are good with L/S Misfires or most Fords
Some shops avoid them
There are several ways to look for misfires
You have to have scan tool software & know how
to use $ Mode 6 & have & use an oscilloscope
All testing has to be done on a road test with the
test equipment on the coils
Doubtfull many repair shops even know what I'm
You can solve any coil issue yourself ,if you buy one
coil only & put it in a cyl with a misfire code
PO 301 thru PO306 or 8
If you don't get the bad coil, replace the old one &
continue to walk the new one
There are some real serious issues you will someday
face & you will need my help, as a dealer can't figure out
You have to use logic,& get your head around how these
systems work & loose the ford product additude & things go
as they would on any vehicle brand.
Don't even go near a dealer,waste of time & huge amounts
Do it my way
Get involved & install a coil & go from there
Posted on Jul 31, 2011
SOURCE: Error code P0353
It might be getting spark but that spark might be out of the allowed timing signal that triggers it. You can not tell without a scope.
Posted on Dec 30, 2013
Testimonial: "Also, it seems to run fine no miss at cold start up (wisconsin) but soon as it warms up, it then misses and has a foul smell coming from the exhaust."
Tips for a great answer:
A faulty o2 sensor will not cause a misfire. This is exhaust related, which is more than likely due to a clogged catalytic converter, which was is likely due to your misfire leaving unburned fuel to go to the exhaust, which clogs the catalyst. You likely smell a rotten egg type smell in the car at times. Your misfire is likely another cylinder. The OBDII codes are not great at finding the cylinder of the misfire in this particular car. Your best bet is to replace all 8 coils and plugs at the same time with OEM Motorcraft coils only. One bad coil makes the others work harder, meaning if you replace them one at a time, you will be constantly chasing a misfire.
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