Code problem missfire P0171/P0330 Need Help
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Code problem missfire P0171/P0330 Need Help
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I have a '05 XLT Screw 11,000 miles and Just wondering if anyone else had the same problem. I noticed the truck not running right like it was missfiring not bad but noticable. Then today it really got worse the check engine light flickered on and off then when I checked it with my meter and it came up with a P0171 Lean fuel, and a P0330 misfire Cylinder 3. I'm running 87 octane in right now. I'm new to Ford products being this is my first truck and my first Ford, just want to know what might of caused this misfire in the engine. Please help.
I have a '05 XLT Screw 11,000 miles and Just wondering if anyone else had the same problem. I noticed the truck not running right like it was missfiring not bad but noticable. Then today it really got worse the check engine light flickered on and off then when I checked it with my meter and it came up with a P0171 Lean fuel, and a P0330 misfire Cylinder 3. I'm running 87 octane in right now. I'm new to Ford products being this is my first truck and my first Ford, just want to know what might of caused this misfire in the engine. Please help.
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Yep I have 5.4l. I did a little homework and found a TSB on this issue.
Technical Service Bulletins Summary
Make: FORD
Model: F-150
Year: 2005
Type: TRUCK
Service Bulletin Number: 041601
NHTSA Item Number: 10018745
Summary Description:
WDS COP KIT DIAGNOSTIC TIP - COIL ON PLUG (COP) IGNITION SYSTEMS - ENGINE MISFIRE OR ROUGH RUNNING. *TT
Taking it over to the dealer to fix the problem, Thought it might of been something I did to the truck to cause the problem, guess not.
Technical Service Bulletins Summary
Make: FORD
Model: F-150
Year: 2005
Type: TRUCK
Service Bulletin Number: 041601
NHTSA Item Number: 10018745
Summary Description:
WDS COP KIT DIAGNOSTIC TIP - COIL ON PLUG (COP) IGNITION SYSTEMS - ENGINE MISFIRE OR ROUGH RUNNING. *TT
Taking it over to the dealer to fix the problem, Thought it might of been something I did to the truck to cause the problem, guess not.
Elder User
Joined: Jun 2006
Posts: 924
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From: Fuquay Varina,NC
The COP ignition system would not cause the lean code, I have a feeling it could be the injector as well. Make sure the dealership knows that it was running lean as well, and let them figure out the problem on their own.
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BigDogg715
Modular V8 (4.6L, 5.4L)
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Aug 21, 2006 01:58 PM
