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My 2001 Taurus 3 litre dohc engine started to misfire a couple of days ago first start up in the morning around 45 degrees Fahrenheit.After driving it gently it ran better and smoother until there was no misfire at all.The next morning,same thing.When I got home I scanned it and got the P0302 confirmed code.While it was running warm and smooth I cleared the code scanned again and received no fresh code.The car had a coil pack and new platinum plugs installed Appx.20,000 kilometres ago.Not by me but I do have the work order from the previous owner.
So my first question was going to be does the dohc engine use a plug over coil,or coil pack ignition.? I didn’t see any wires or small bolt on the end of the plug wires so coil pack it is I guess.
It seems unlikely that the coil pack would be bad again already,but I don’t know what brand of part was used( maybe cheap off shore)
Is #2 cylinder on the firewall side? And I guess the coil pack is back there as well.
I guess the plan now is to remove the intake manifold and all the other pieces along with it.
I haven’t ruled out a bad injector for number #2 cylinder either but no matter what,it looks like the intake has to come off for any tests,including a compression test.
Any thoughts or opinions on this issue would be appreciated thanks
#2 is middle firewall. '01 tec had coil pack. For p0302, suspect plug, wire, coil pack, injector then time for compression/leak-down tests.
 
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