I have an 05' f150 4x4 and i had to change my fuel filter about a month ago because my truck started to run realy ruff and then wouldn't start at all. Since i changed it runs a lot better but still idles a little ruffer than before. Has anyone had this problem or have any suggestions as to what might help?

 

motor? mileage? when was the last tuneup if ever?

 

5.4, 58,000 miles, never had a tuneup

 

any codes? and is there a cai or oil charged filter?

 

No codes, k&n cai. What is a oil charged filter

 

i'd reccommend you clean the maf sensor first with electrical cleaner. i think you can get it from almost anywhere. the K&N is a oil charged filter. an oil charged filter is a cleanable filter that has oil in it. but the oils from them contaminate maf sensors.

 

Yeah, the 4.6 in my 03 Mach1 started idling a little rough, so I cleaned the MAF and she smoothed right out. You can get the cleaner at just about any parts place. It takes a special type of Allen wrench to get the MAF off though.

 

Thank you all so much i am going to try this first thing tomorrow and i will let you know how it goes.