greggeis

Confirmed that solved the issues I had. I had the transmission rebuilt about a year ago and I'm really thinking it was the same issue. Expensive lesson not to take your car to a transmission shop first.

I have 90k miles on them. I replaced the spark plugs with the Motorcraft Platinums. While I was in there I replaced the PCV valve and cleaned the throttle body but both of them looked fine. The old plugs looked pretty rough and had more than .0800 gap so I'm betting that was the culprit.

Just wanted to bring this back from the dead. Has anyone found a resolution to this problem. It's the only thread I can find that describes the problem to a T. For me it's in a 2007 Mkx. The people describing the problem in the TSB sounds a lot worse, more indicative of a total coil failure. I brought the car by a dealer to check the codes a while back and they said the coils were good and to replace the spark plugs which I haven't done yet but am about to. I just don't think it's going to fix it as it seems so specific to that rpm range and load and gear. Anyone that has found a full resolution would be amazing to share it.