Codes p0304 and p0316 help please!
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Codes p0304 and p0316 help please!
Can I get some help please? I am currently pulling a trailer through Joshua tree and I am stuck at the moment. Getting codes 304 and 316 on the truck. F150 2004 5.4 4x4. Replaced the coils and crankkshaft shaft sensor already today still no go. Any ideas on what to do next?
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I changed plugs over summer, even moved plugs around, as well as coils, codes I do get are p0304, p0305, p0308, p0316, even got p0174, this thing is a mess. Clean out battery, cleaned out mass air flow and intake body, waiting for compression tester, looking at fuel injectors now 
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Still stuck
Still getting the same codes. Removed and cleaned injectors and a mess of sensors. Still the same codes. Truck runs ok by itself to get home but under a load with the trailer, no good. Could this be a compression problem?
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No. The codes show a misfire in #4, 5, and 8 cylinders. P0316 is a misfire detected on startup and P0174 is system too lean bank #2. Given the age of the truck, I'd check out the fuel system. It could be that the fuel pump or driver module are starting to give out or injectors that are going bad.
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From: Sunny tourist infested FL
No. The codes show a misfire in #4, 5, and 8 cylinders. P0316 is a misfire detected on startup and P0174 is system too lean bank #2. Given the age of the truck, I'd check out the fuel system. It could be that the fuel pump or driver module are starting to give out or injectors that are going bad.
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Posting Guru
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3,5,& 8 could have low compression which would cause those codes, you need 3 things to work air, fuel, and fire
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did you ever figure it out?
Can I get some help please? I am currently pulling a trailer through Joshua tree and I am stuck at the moment. Getting codes 304 and 316 on the truck. F150 2004 5.4 4x4. Replaced the coils and crankkshaft shaft sensor already today still no go. Any ideas on what to do next?
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