Question about 2004 Ford F150
I will try to help. I can answer your question about a mess up before the Repo. There is a problem with a part called a "Cam Phaser" and a problem with spark plugs with this year model and several more year models.
You are going to have to replace the parts you know are bad, like the O2s and fix the electric feeds to the coils. If the former owner thought the "Cam Phasers or Plugs" were bad he or she may have let the truck go rather than repair it.
The good news is that by fixing the 3 coil wires and replacing the O2s you may only need a gasket and a few sensors and be good to go.
1. Put in O2 sensors 2. Fix electric problems to coils, check pin connectors for ECU to the drivers bank of coils. You need to find if wires are dead coming out the ECU. 3. Check Cam sensor connection for Drivers bank. This tells ECU when to fire plugs. 4.The idle problem will improve with 8 cylinders firing, then check for Intake gasket leaks with can of choke cleaner around seams while engine runs. A change in RPM indicates a leak.
At any point after the engine starts running better, clear the computer. Let onboard system rediagnose problems.
Depending on how much work you want to do, you may want to pull the Intake and check your plugs. Ford heads coughed up plugs and the knock you hear may be loose plugs. Oil up the plugs and let them soak 8 hours and then remove from engine. They are unlike any plugs you have seen.
You can use the reply feature for more info. I hope I have been very helpful for you. You may want to check out the F150 Forum online, or Browser search F150 sparkplug recall, or similar for "Cam Phasers". I will give you and idea of potential problems I mentioned.
Posted on Dec 29, 2010
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Posted on Jan 02, 2017
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Jan 31, 2016 | Cars & Trucks
The spark plug firing order is ( 1 - 4 - 2 - 5 - 3 - 6 )
The engine cylinders are 1 , 2 , 3 from front to rear on the passenger side of the engine and 4 , 5 , 6 from front to rear on the drivers side of the engine
The coil pack towers are numbered 1 , 2 , 3 from front to rear in the row nearest the passenger side and 5 , 6 , 4 from front to rear in the row nearest the drivers side
hope this clarifies the situation for you
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