rough idle blues
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Junior User
Joined: May 2004
Posts: 92
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rough idle blues
Can anyone tell me if this is can be cured??? My 2002 f-150 4.6 liter idles rough when warmed up and in gear. I checked for vacume leaks couldnt find any. The ford dealer reset the powrtrain through the computer some how...Didnt cure it.
Braught it back to ford they installed a new PFE sensor...Didnt cure it....
Has anyone had the same problem and fixed it???? Please help me its driving me nuts....
Braught it back to ford they installed a new PFE sensor...Didnt cure it....
Has anyone had the same problem and fixed it???? Please help me its driving me nuts....
New User
Joined: Jun 2004
Posts: 11
Likes: 0
From: North Florida
Just out of curiosity, what octane gas are you using and what does your manual recomend? I ask this because in 97 myself and two of my neighbors all bought F-150 supercabs (Mine:4.6, neighbor #1:4.6, #2: 5.4) each of my neighbors had the same symptoms you are describing. In the end (and after numerous trips to the dealer) it came down to the fact that they were burnning 89 octane or higher and Ford recomended 87. (I was burnning "the cheap stuff" from the start and never had a problem) Once they burned a tank of 87 they had no more problems. Good luck!
