Hello,
Ive been searching on here and not able to find anything about what happened to me. I just replaced the spark plugs with the Bosch, per-gaped ones. Should be the .54 on my 07 Edge. I had 108k on the miles. I'm the second owner but they look like the originals. After the change, I started to get a misfire on one of the cylinders, so I replaced the coil hoping that would work. What im dealing with now is the car idles rough, it goes down to about 600 rpms then makes a jerky movement to about 450 and kicks back up to 600. I have also found that running the A/C makes everything much worse. Ive found the issue is present on the freeway when going about 55 mph and the car is at about 1000 rpms as well. When i get on the throttle things smooth out from what i can tell.
All the coils appear to be firing, and Ive checked the voltage. Ive cleaned the MAF and am wondering if its a vacuum or Throttle Body problem. The only other thing that was done when the plugs were changed was replacing a few gaskets. Any direction on this would be really great. Thank you.