 2001 SEL idle problems
The van drove perfectly fine until I filled the tank three days ago. Later that afternoon, I noticed a hesitation while driving it, almost like a chugging-type feeling and it was worse when sitting idle. No engine lights came on, though, so AutoZone said they really couldn't check for anything. Took it in to the repair shop, they replaced the coil pack but said the manifold needs replaced and they can't get the part from Ford because Ford stopped production (is this true?). Also said it would very expensive anyway, and the van has 114,000 miles on it so I'm not sure how much money I want to put in it. They made it sound like a pretty big deal, and I'm not up to that, truthfully.
Drove it home and it drives better but still has a really rough idle. Today, the emissions control light came on for the first time. Went back to the shop where they cleaned out carbon build up and sent us on our way. The light had gone out but by the time I drove about three miles, it came back on. The engine seems to rev itself when sitting idle in the garage; it's really kind of creepy! It's also going through gas like crazy - I went from getting about 17 mpg city to 13.6 mpg. We made an appointment to take it to the Ford dealer on Monday, without telling them what we've been through and what we were told, but I was just wondering it any of this sounded right to anyone here? Now that the light came on, we may take it back to AutoZone to see what it reads. | 
