TSB's

Ford cam timing

Some 2004-2010 Ford F-150, 2005-2010 F-Super Duty F-250/350, 2005-2012 Expedition, 2005-2012 Lincoln Navigator and 2006-2008 Lincoln Mark LT vehicles equipped with a 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 integrated diagnostic system (IDS) scan tool or equivalent, monitor cam solenoid duty cycle and cylinder head temperature (CHT) 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 selector lever in D. Raise engine rpms from idle to approximately 1,500 rpm and release the throttle. Does the vehicle exhibit a rattle type noise with a rough idle and are the cam solenoid duty cycle PID values oscillating after rpms return to idle speed?

  a. If yes, proceed to Step 3.

  b. If no, this TSB does not apply. Refer to workshop manual Section 303-04B for 2004 vehicles or 303-14 for 2005-2012 vehicles.

3. Replace both the left and right variable camshaft timing (VCT) oil control solenoids. Refer to workshop manual Section 303-04B for 2004 vehicles or 303-14 for 2005-2012 vehicles.

PART NUMBER                      PART

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

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

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

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

3L3Z-6584-DB………………… LH cam cover gasket for 15-bolt cam cover

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

Post a comment
 

Comments (1)

 

Post a Comment

Submit
Subscribe Today

Subscribe to Auto Service Professional

Sign up for a FREE subscription to Auto Service Professional magazine

Subscribe