Ford Repair Questions? Ask a Mechanic for Answers ASAP
is the engine light on? have you ever cleaned the maf sensor?
did it run good prior to the maf change?
411,000? yea its getting tired... timing chain may be sloppy...rings are probably very seated...I bet a timing chain ould wake it up...but with 400k I think d be looking for a replacement motor rather then opening it up