Expedition 4WD V8-5.4L SOHC VIN 5 (2005)
Spark Plug: All Technical Service Bulletins
Ignition System - MIL ON/DTC P0300-P0308/P0316
TSB 08-25-4
5.4L 3V WITH PO3OX AND/OR P0316 ACCOMPANIED BY SPARK KNOCK
FORD:
2004-2005 F-150
2005 Expedition, F-250, F-350
LINCOLN:
2005 Navigator
This article supersedes TSB 06-3-3 to update the Service Procedure and Part List.
ISSUE
Some 2004-2005 F-150 and 2005 F-250, F-350, Expedition and Navigator vehicles equipped with a 5.4L 3V engine, may exhibit the malfunction
indicator lamp (MIL) on with misfire diagnostic trouble codes (DTCs) P0300 through P0308 and/or P0316, and a spark knock.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
It may be necessary to replace the long or short block if damaged, and/or install latest level spark plugs. Refer to the following:
1.
Isolate the engine bank causing the misfire I engine knock using diagnostic trouble codes and/or stethoscope.
2.
De-power each cylinder individually on affected bank(s), one by one.
a.
If noise disappears when any cylinder(s) are de-powered, proceed to Step 3 for those cylinders.
b.
If noise does not disappear, use power balance test to isolate affected cylinders and proceed to Step 3.
3.
Perform cylinder leak down / compression test and/or use a borescope to check isolated cylinders for damage (scuffed cylinder bore walls).
a.
If engine damage is confirmed, replace the long or short block assembly under the provisions of the latest edition of the Powertrain
Reference Guide. Be sure the latest level spark plugs are installed.
NOTE
THE LATEST LEVEL PLUG WILL BE MARKED WITH (PZT 14F) ON THE PORCELAIN INSULATOR.
b.
If no engine damage is found, be sure the latest level spark plugs are installed.
4.
If the misfire / knock condition is still present further diagnostics may be required to determine other sources of misfire, such as fuel injection
monitoring or coil integrity checks with Integrated Diagnostic System (IDS) diagnostic equipment.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION
DESCRIPTION
TIME
MT082504
Use SLIS Operations If
Actual
Available; Claim Additional
Time
Diagnosis Or Labor
Performed As Actual Time
DEALER CODING
CONDITION
