Everything was checked to be ok, I have oil and transmission fluid was ok. Theres no noise when truck is on idle.
Ford Q&AAsk Your Question
2004 Ford Expedition Question: I hear a rattling/knocking noise coming from underneath when I press gas pedal
Answer #1G. T. Service Center (4215 Answers) , Stephenville, TX - (254) 638-3236ProfessorG May 05, 2014, 07:07Master
It would be easier if we could hear the noise. Do you have someone you trust to help identify the sound.
Replym7070, May 05, 2014, 08:53Rookie
I am having someone look at it today, but over the weekend one person said it could be the flywheel and another said the catalyst converter. I wont know until later on today. But like I said it only does this when I press on the gas pedal like something is rattling underneath.