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New to Ford
Hey everyone. This is the first Ford I have owned, and I do not know the 5.4l 3v as well as my last 360ci dodge. It's a 2005 F-150 SuperCrew 4x4, got it cheap, and it's got issues. Got codes for misfire on cylinders 4 and 5 and Coil 'D' circuit malfunction. Obviously it has codes for limited power as well. was wondering how cylinder numbering goes and what coil is 'D'. Thanks in advance for your info.
Postmaster
Joined: Jul 2010
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From: Henrico, VA
The coils are numbered the same as the cylinders but the way it goes is 1-4 down passenger side and 5-8 down driver side.
How many miles are on the truck?
Have the plugs been changed yet? the plugs are tricky as they are two piece and tend to break off but with the right tools it only takes some time.
The newer plugs are designed better now to allow for better power. They widened the gap so it doesn't cross jump and lose power during acceleration.
How many miles are on the truck?
Have the plugs been changed yet? the plugs are tricky as they are two piece and tend to break off but with the right tools it only takes some time.
The newer plugs are designed better now to allow for better power. They widened the gap so it doesn't cross jump and lose power during acceleration.
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Thanks for the info Coskid. I'm not sure, although I would hope, that the plugs have been changed a couple times at least. It has 303000km on it. The scanner I was using gave me a code P0354 Ignition coil D circuit malfunction. I expected that they would be numbered same as the coils, is it a generic code when the engine is missing so badly? Also have an EVAP small leak code, exhaust manifold is leaking.
"Obsessed"
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From: On The Edge of the Cliff
Actually the plug get done every 100,000 miles in these motors or about 160,000km so at that mileage they have only been due once....
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Cracked exhaust manifolds were an issue with some 5.4s also I would replace the plogs and COPs as soon as possible. There are a ton of right ups on this site that tell you exactly what to do.
Are you just getting misfire codes? Some 2005s had issues with premature failure of fuel injectors which over time leads to costly repairs.
Are you just getting misfire codes? Some 2005s had issues with premature failure of fuel injectors which over time leads to costly repairs.
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Thanks, might have at least one bad coil. Codes say misfire within first 1000 revs, Not sure what 'P0354 Coil D circuit malfunction' means yet, but if I keep the truck, I will probably end up doing exhaust work as well. This truck has been rode hard, might just auction it off, maybe someone can use some parts off it. It's a nice looking truck, but under the skin it's pretty worn out.
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Is the engine making a tapping/ticking sound between 900-1200 RPMs, if so you could have bad cam phasers, lash adjustors, or lifters. I hope that is not the case, low oil pressure is a sign of these problems. It might be a good idea to have a diagnostic run on the truck to find out exactly.
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