Hello, My name is Carl I live in Benton, AR. This is the my first time on any kind of forum.I found you guys by serching for problems with my 2004 f150. I just bought a bumper pull camper and the first time I pulled it I didnt have any problems.The second time it started out ok but when I got on the interstate it lost power and top speed was 45mph. The check engine light cam on. i went the next day i went to a friend and he checked codes it said check the cat converter.I had them checked, there are four,they said they were ok.I went home and hooked up the camper and pulled about 30 miles on the intersatate. with no problem.Has anyone heard of this? please help! Thanks for any info.