5.4 /No Power
Cargo Master
Joined: Oct 2003
Posts: 2,833
Likes: 4
From: Jefferson, Iowa
to check the knock sensor, is what i had to do what tap on the block lightly with a smalll ball pean hammer and have a timing light hooked up. Now this was on a chev what had plug wires, i dont know how you hook a timing light up to one of these new engine, but as you tap on it the timing should retard.
Freshman User
Joined: Oct 2007
Posts: 28
Likes: 0
Do you have a K&N filter, the oil on the filter element can coat the MAF and it will cause the problem you are describing. It may not throw a code but it feels like you have a parachute out back. I had this happen last year and took six months of crappy milage and power to figure it out
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Junior User
Joined: Feb 2008
Posts: 77
Likes: 0
From: York
I did not figure it out yet.No K&N.Did swap MAF with a work truck.Didnt make a difference.Im back to work 6 days a week.Drive a company truck to and from.Lucky to put 20 miles a week on my truck.Probably wont have time till end of summer to do more checks.
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patrick.sellers
2004 - 2008 F150
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Oct 31, 2011 11:42 PM
