Question about 2002 Lincoln LS

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Coil pack plugs diagram ignition

I have changed all the coil packs and spark plugs and still have cylinder 2 miss fire. what might be the cause.

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  • Lincoln Master
  • 5,675 Answers

Make sure computer was cleared from old error. Check or replace #2 fuel injector. Spark plug wires can be replaced individually, you might want to replace #2 wire.

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

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SOURCE: miss fire cyc 8 changed plug and coil pack scan

check compression, then fuel injector. or vac leak. what kind of scan tool. very few will give live misfire data. you are sure you replaced number 8, drivers side rear?

Posted on Oct 21, 2009

  • 91 Answers

SOURCE: Cylinder location diagram for a 2004 lincoln aviator

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

  • 850 Answers

SOURCE: I recently posted a problem about my 1996 lincoln

injector is faulty!
get a whole new set not just one!!!!
& make sure the plug gaps are as reommended as this can stop the motor from starting ITS THAT CRITCAL on computerised cars!

Posted on Jul 18, 2009

  • 4 Answers

SOURCE: cylinder location and firing order diagram for

have you considered buying a $14.oo haynes repair manual from Kargen or one of those type stores? If not just google your year, model and engine type and a diagram comes up

Posted on Aug 14, 2009

  • 196 Answers

SOURCE: 1999 lincoln continental starting problems it will

no timing has not changed i would try crank sensor ,and change number 4 plug and coil pack

Posted on May 07, 2010

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theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
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Do you have a simple miss on 2 cylinders? If so, you might be looking at a fuel injection problem, specificially a computer problem not firing the fuel injectors for the two cylinders in question.

I would investigate that route.

Could also be a module for the coil packs, that the coil packs sit on.

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Check the coil packs on the plug if equipped with that type, or the coil packs at the end of the spark plug wires, if so equipped.

Also, check that the fuel injectors are firing on all 8 cylinders.

Definitely, check out what other codes are stored in the computer besides a missing condition.

I have a 1999 Expedition that had a miss on a cylinder, and it turned out to be a bad coil pack. You have 2 cylinders missing, so I would check each cylinder for good spark, or replace the coil packs as necessary to see if that resolves the problem.

Good luck on this repair.

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Remove the plugs from the head. Insert into the coil wires. Make sure they are properly earthed on the engine. Crank the motor and check for spark at each of the plugs.
Refer to the diagram. Cylinders are connected as shown on the diagram in blue. 1 goes to cylinder 1(sparkplug furthest from coil pack), 2 to 2, 3 to 3 and 4 to 4(closets to coil pack).
To test the coil pack use a digital volt meter. Measure resistance between coil towers for coil 1(marked 1 in red on diagram) Value should be between 12000 and 14500 ohm. Do the same for coil towers 2.
Measure resistance between I and C1. If the measurement is more than 5 ohm the coil is defective. Do the same for I to C2.
Measuring voltage at I(Ignition start/run) to ground should be 10V.
I is connected to the 15A engine fuse. The radio interference capacitor is connected between this line and earth at the coil. Disconnect it to see if it cures the problem.
C1 and C2 connect to the powertrain control module.
Bear in mind that aftermarket coil wires may cause problems with misfiring, so see if you cant find an OEM coil wire to replace the broken one before replacing anything else.

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