Originally Posted by CNeubauer

We bought an '01 cab and chassis this spring that's doing the same thing, acts like it's in limp mode but after you drive a minute or two it comes out of it and runs good. We got our's as a repo and the bank had it in a shop getting some work done to it and they scanned it and said it showed a bad crankshaft position sensor. I've got a new sensor for it but haven't had time to mess with it yet. Our's hasn't gotten any worse in the couple of months that we've had it.