4.6L - Grinding Type Noise From Engine Timing Chain Area (03-15-7)
Publication date: 2003-08-04Reference number: 03-15-7
4.6L - GRINDING TYPE NOISE FROM ENGINE TIMING CHAIN AREA
TECHNICAL SERVICE BULLETIN
| FORD: | 2000-2003 CROWN VICTORIA |
| MERCURY: | 2000-2003 GRAND MARQUIS |
DESCRIPTION
ENGINE - 4.6L - GRINDING TYPE NOISE FROM ENGINE TIMING CHAIN AREA
NOISE - GRINDING TYPE NOISE FROM ENGINE TIMING CHAIN AREA
ISSUE
Some 4.6L 2V engines may exhibit a grinding type noise from the timing chain area. This may be caused by excessive wear of the timing chain tensioner arms. The tensioner arm has an aluminum base with a nylon surface. Another indication of this condition may be fine nylon and/or aluminum particles present in the engine oil.
ACTION
Inspect the timing chain and arms to determine if excessive wear exists. If this condition is present, replace the timing chains, tensioners and the tensioner arms. Refer to the following Service Information for details.
SERVICE INFORMATION
Refer to Workshop Manual Section 303-01A for correct replacement service procedures.
- Fine finish timing chains - part F5LY-6268-A
- Tensioner - 2000 RH part F6AZ-6L266-DA, LH part F6AZ-6L266-CA
- Tensioner- 2001-2003 RH part 1L3Z-6L266-AA, LH part XL1Z-6L266-AA
- Tensioner arms - LH part 1L2Z-6L253-AA, RH part 1L2Z-6L253-BA
Remove residual nylon/aluminum particles by performing an engine oil change and replacing the oil filter. If wear has progressed through tensioner arm into tensioner piston, remove oil pan from engine and clean debris from oil pick up tube.
PARTS INFORMATION
| Part Number | Part Name |
|---|---|
| F5LY-6268-A | Fine Finish Timing Chain |
| F6AZ-6L266-DA | Tensioner - 2000 RH |
| F6AZ-6L266-CA | Tensioner - 2000 LH |
| 1L3Z-6L266-AA | Tensioner - 2001-2003 RH |
| XL1Z-6L266-AA | Tensioner - 2001-2003 LH |
| 1L2Z-6L253-AA | Tensioner Arm - LH |
| 1L2Z-6L253-BA | Tensioner Arm - RH |
WARRANTY INFORMATION
WARRANTY STATUS: Information Only.