Thank you to all that responded to this post that I made last Sunday as I pulled my hair out trying to get my moho to run. Well Diplomat St Poodles wins the prize this time, as it turned out to be the air cleaner. In discussion with several friends we had dismissed the air cleaner as I had changed it only 22,000 miles ago. On last Monday morning I loosened the clamp and pried the hose off and retried it with the air intake wide open, and it ran fine. I immediately called my Freightliner dealer and they had to order it for me. The new air cleaner arrived Friday, and is installed now, and the Excursion is running fine, ready to leave next Tuesday for a 30 day trip to Wyoming. I still have no idea why it was blocked enough to effect performance that much after only 22,000 miles. Thanks again for the replies.
