Hey guys,

Thanks for the replies.

I haven't even thought about the coil packs - Shelton, I never even knew that the multiport 2.5 works that way... could you explain more? I THOUGHT that BOTH plugs on each cylinder fire at the same time.. so you're saying they do not?

As for the cold running, I thought I had made myself clear - but anyway, the engine starts misfiring/shaking at idle COLD. The colder it is outside (and the colder the engine is), the harder it shakes and the longer it takes for it to go away.

Once the engine has warmed up (radiator reaches temperature as well) the unit will hardly EVER shake/misfire at idle.

IF IT WERE COIL PACKS... why only at cold and at idle?

__________________
Chris
Qualified John Deere Mechanic
B.A. in History, York College of PA