I was going uphill with 43,000 lbs today on Hwy 401 in Ontario and all of a sudden, the truck started shuddering. I cut the cruise control and as the RPM went down, the vibrations disappeared. They reappeared though as soon as I tried to add fuel. I barely made it to the yard which luckily was only 10 miles away. Our shop mechanic at first thought it was the u-joint, but hearing the engine idle, the recommended taking it to CAT. It clearly has a miss. I booked an appointment for 7 am tomorrow and CAT said over the phone it can be either an injector or a fuel supply problem.
Anyone had something like this happen to their truck? Mine is a 2004 International 9400 with a CAT C15 and only 470,000 miles.



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heh heh.... heh heh

...okidocki... no sense of humor..eh? 
