skipjack

My 2005 f-150 started running very bad to the point it had no power, so I took it in to the local dealer they said it was the converter again. this is the second converter that has been put on the truck in the last 15000 miles. The good thing is that it was covered under warranty the bad thing is the truck has 65,000 and will probably be out of the factory warranty 8 years or 80,000 mile warranty they said that all injectors were opening and closing like they should. he said it did show only one misfire since the last converter change he recommended to change the plugs for 580.00 the truck has alot of power like it did when the converter was changed but if you really have to get on it you can still feel it hesitating