2003 ford focus wagon zetec 4 valve 2.0 liter, 198,000. Pulling onto the highway it slipped into neutral then SLAMMED back into drive. later, on my way home, I gave it gas and I lost two cylinders. I changed the bad coil and was good for a day, then it misfired again so I changed the wires(the plugs were recently done) Good for a day then I lost two cylinders again, the new coil failed the same as the original. I then got a junkyard ford coil(tested good) and replaced again(checking the pigtail wires carefully) Good for a few minutes then on my way home it started losing two cylinders again! If I give it gas under a load it acts up, and sometimes it slams in and out of neutral, momentarily illuminating the trans light but no code. I changed the overdrive/4th? solenoid (A?) last year when it revved out on the highway in top gear(like it's in neutral). On the back right side of my coil pack there is a single wire that has been unhooked forever and I don't know what it is for, and I always keep sticking the bare wire ends back into the grey plastic plug that it belongs in. One guy here reported a similar problem and stated it was caused by a bad ground wire, but I don't know the particulars. I've had good luck with this focus and better luck with this site, please help me!