I've got an '03 P5 with 105,300 miles on it and took it in for a timing belt change per service manual. When I went to pick the car up I started it and reinstalled the car seat in the back, as I got in to drive away I noticed a CEL was on before even leaving the parking lot. Turned around and the guy scanned my codes and said I had a miss fire on Cyl #2. He thought it was probably because they removed the coil packs and everything when they did the service. He cleared the code and checked the connections on the coil packs and sent me on my way. I had also mentioned that the car seemed to be idling much lower then it usually did and running rougher. My car usually idled at about 900 and no it was maybe at running at about 700 and I could feel it. Before the service the car ran great, in fact I couldn't even tell it was running sometimes it ran so smooth. So to be sitting there be "feeling" the car seem like it's trying to stay running was a bit odd.
The CEL didn't come on the rest of the way home but it still seemed to be idling too slow and feel like it was fighting to keep the rpms up at idle, just about 700prm. Got home and unplugged both cable to the Battery and gave the car a wash and let it sit for about an hour before hooking the battery back up to reset the ECU thinking that might do it. Drove around today running errands, still seemed to be running rougher then it did and idle was still low to me at about 700 and not running great. Then tonight, leaving the drive way it threw another CEL light. I don't have scanner but I suspect it's the same misfire issue.
Would this be characteristic of my timing being off by a tooth maybe. It just ran so good before the service and no not so much. I did the service to keep it running good, not have it give me check engine lights every other day. If anyone has some insight they could share with me I'd appreciate it. Going back to the mechanic tomorrow so I hope I can show up armed with some knowledge of what the problem might be. Thanks
The CEL didn't come on the rest of the way home but it still seemed to be idling too slow and feel like it was fighting to keep the rpms up at idle, just about 700prm. Got home and unplugged both cable to the Battery and gave the car a wash and let it sit for about an hour before hooking the battery back up to reset the ECU thinking that might do it. Drove around today running errands, still seemed to be running rougher then it did and idle was still low to me at about 700 and not running great. Then tonight, leaving the drive way it threw another CEL light. I don't have scanner but I suspect it's the same misfire issue.
Would this be characteristic of my timing being off by a tooth maybe. It just ran so good before the service and no not so much. I did the service to keep it running good, not have it give me check engine lights every other day. If anyone has some insight they could share with me I'd appreciate it. Going back to the mechanic tomorrow so I hope I can show up armed with some knowledge of what the problem might be. Thanks