Just wondering if anyone has had the same problem. I had a sheared bolt on my manifold, I took it all apart and replaced all the studs and nuts, put it all back together and now my van is in limp mode. A MAF sensor error came up, I replaced the sensor, did the battery disconnect reset for it and I'm still in limp mode. There are no engine warning lights or anything. I was going to try and clean my egr valve today and see if that is maybe the problem but I would have thought that some fault code would have come up for that. Anyone know what else I can look for?