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Ford/Lincoln rattle

Some 2004-2010 Ford F-150, 2005-2010 F-Super Duty, 2005-2012 Expedition, Navigator and 2006-2008 Mark LT vehicles equipped with the 5.4L 3V engine may exhibit an intermittent rattle noise/rough idle when the engine is at operating temperature. The issue is caused by oscillating cam timing. DTCs P0022, P0021, P0340 and/or P0341 may be stored in the PCM.

1. Using the IDS scan tool or equivalent, monitor the cam solenoid duty cycle and cylinder head temperature parameter identification (PIDs).

  a. Start IDS.

  b. Select Data Logger.

  c. Select PIDs VCTDC, VCTDC2 and CHT.

2. With the engine idling at normal operating temperature (CHT above 200 degrees Fahrenheit), apply the parking brake and hold the service brake pedal firmly with the transmission in D. Raise engine rpm's from idle to approximately 1,500 rpm and release the throttle. If you hear a rattle type noise with a rough idle, and the cam solenoid duty cycle PID values oscillate after the engine returns to idle, proceed to the next step.

3. Replace both the left and right variable camshaft timing (VCT) oil control solenoids.

P/N                               ITEM

8L3Z-6M280-B…………..Variable camshaft timing solenoid

7L1Z-6584-B……………..LH cam cover gasket for 14-bolt cam cover

7L1Z-6584A………………RH cam cover gasket for 8-9 bolt cam cover

3L3Z-6584-EA……………RH cam cover gasket for 14-bolt cam cover

3L3Z6584-DB…………….LH cam cover gasket for 15-bolt cam cover

3L3Z-6C535-AA………….VCT solenoid to cam cover gasket 2004-2006

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