What engine do you have? 4 or 6 cylinder? If you can find the distributer cap on your 6 cylinder tribute, then you don't have a 6 cylinder. They are only coil on plug, so no dist cap. coil on each cylinder. try moving the coil from cylinder #1 to another cylinder and see if the problem follows, if it does, then replace that coil. If not, then there is something wrong with cylinder number one or the wiring that runs the coil or the injector. On an 01 V6 tribute I worked on forever before finding a broken wire at the ECM that ran the ground side of the coil. It would occasionally make contact and the car would run ok, but then other times it wouldn't make contact at all and the car would stumble and stutter and usually stall. Try moving the coil around first. Ford dealers sell the replacement pigtail to repair the ECM connection if neccessary. You need to be very specific when you ask for it. It's a little tiny wire lead and it's like $10-$15, but it's the only way you can fix a computer wiring harness.
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Some testing needs to be done to find the problem. May be spark related (ignition)-check if cylinder 3 has spark. You should see a blue, snapping spark when checking at the end of the spark plug wire-you can buy a cheap calibrated spark tester to check for spark. If spark is good, need to check that injector for #3 is pulsing, so the cylinder is getting gas. If you find it has spark and getting gas, have a compression test done to see if any mechanical problem with cylinder 3, something like a valve not seating can cause misfires.
First off I think it's time for a new mechanic. Doing an oil change and replacing the fuel filter and air filter have nothing to do with a misfire. Spark plugs and ignition coils can cause a misfire, but a good mechanic will test the coil and inspect the plugs instead of just guessing. Your mechanic is guessing and just throwing new parts at the car. A misfire can be caused by (aside from a bad coil or plug) a faulty or clogged fuel injector, spark plug wire, wiring to the injector or a vacuum leak. Since you only have a misfire in one cylinder, and you hear a whistle on acceleration, I would suspect a leak in the intake manifold. Go to a reputable repair shop and have them check the manifold for leaks. You can also check yourself by buying an automotive stethoscope, and moving it around the perimeter of the intake manifold listening for a hissing sound. Or have someone press on the gas while listening for a hiss under the hood.
IT could be something such as a loose plug wire.The best advise I can give you is to take your jeep to your local auto parts store and have them pull the codes out of your on board computer.This will give you an area that you can concentrate on to make the necessary repairs to get your check engine light to go out.
did you check the ICM (ignition control module) that's what the coil pack sits on. Inspect if for wire damage and you can remove the ICM and have it tested at Auto Zone or Parts Source free of charge.
Thank you for using FIxya and good luck
See if your car has an ignition control module. They will go bad over time and cause random engine misfiring. Just went thru it with my 2002 Buick LeSabre. 120,000 miles on the engine. Replaced plugs, plug wires and check the coils. It was the ICM.
Look at the wire and plug to cylinder 2, for cracks or damage, if nothing is found run a compression test need 100psi min, and then check the injector, you need to meshure resistance with a multimeter, and compare to other injectors something like 12 to 15 ohms would be good i think.
You only have 4 so better just do a tune up and change the plug and wires, but one at a time so you don't get them crossed when re-installing the new plugs and wire.
Use Platinum plugs since there good for 100,000 miles which mean less maintenance, and double check that the spark plug boots set to the plugs when re-installed.
Run some fuel injector cleaner through the gas tank for about a week to to clean out your fuel system and hope fully the skipping stops.
If your going to get all the goodys at Auto Zone, have them scan the car for any DTC codes since it's free and see if there are other issues that is causing the skipping like a bad signal from the MAP sensor ECT.
Good luck and keep me posted.