Tsb 12 10 19
Hello fellow Ecoboost owners!
History of truck: Purchased (new) Sept. 9th 2012 F150 XLT Ecoboost. as of 21 December 1654 miles.
Well my journey started on 25 November, when the shudder showed while towing a travel trailer. Turned the truck into the dealer on the 26th of November with 1575 miles on the truck.
The service writer said that they were looking into the problem, then after a couple of weeks they said they had a fix and we are waiting for parts.
The parts showed, and were installed. We got the truck back on the 20th of December. We drove the truck with out a trailer connected, 1 minor hesitation at take off from a stop sign but no other problems. Next day, while picking the kids up from school, the engine was at idle for about 10 minutes. Rolled slow up to the stop sign, hit the gas to get through the intersection, and boom, major hesitation. Drove about a half mile to get to an area where I could get into the gas and build up some speed... hesitation, shudder, and check engine light again.
Drove strait to the dealership, they plugged in the computer and found that now the injectors and catalytic converter are the problem. Now... if you read the actual TSB one of the parts listed is the catalytic converter. I asked the service manager if ours was replaced during the first visit, and they said no, because it passed the computer tests... (well how about now)???
So, what they are having to do now, is pull the intake manifold, to check the injectors, if they are "good" then they move onto the catalytic converter.
Moral of the story, and to all who read and go in for this repair...
1. make sure they clean / flush the new intercooler before install.
2. the TSB says replace the catalytic converter, replace it!
Good luck to us all!!! Merry Christmas!