ARCJr.

I've been trying to diagnose the problem, but I can't find it. I'll be sitting at a light, or anywhere for that matter, and the car will shudder, the RPM will drop by maybe 50rpm and then it will go back to normal for maybe a few to thirty seconds, and then it'll happen again. No perceived problems under load, or under any other conditions, other than sitting at Idle. The only maintenance the car needs is the timing belt kit (it just passed 70k, but I've only spent a total of 2 weeks at home since Christmas so I haven't had time to do it). If anyone has any ideas, please let me know. Oh, it did have some DTCs implying a bad MAF, which I have replaced. The codes have yet to come back.

David.Norton

mine was dirty when it was doing that, in fact it got to the point I was turning the air off as that would agravate it.

ARCJr.

I'll give it a shot when I get back. Thanks!