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Engine - Runs Rough/MIL ON/Misfire DTC's Set


TSB: 01-012/06

2004-2006 B-SERIES TRUCKS - 3.0L - MIL ON WITH VARIOUS MISFIRE DTCS SET

APPLICABLE MODEL(S)/VINS

2004-2006 B3000

DESCRIPTION

Some 2004-2006 B3000 vehicles may experience the following:

- Malfunction Indicator Lamp (MIL) on with Diagnostic Trouble Codes (DTCs) P0300-P0306 and P0316 set

- Rough running at various RPM

- Rough idle

- Misfire

This may be due to an engine exhaust valve seat recession causing a loss of compression. Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

1. Verify customer concern.

2. Identify and keep record of any cylinder that has a concern by recording freeze frame data for that DTC.

3. Perform a manual compression test with the spark plugs removed to locate any cylinder that may have low compression. Refer to appropriate Workshop Manual section 01-01 COMPRESSION TEST under ENGINE COMPONENT TEST.

- If low compression is not found, proceed with normal misfire diagnostics for the appropriate model year.

- If low compression is found and it is a cylinder that had a misfire on power balance, perform a leakdown test to determine the source of leakage. Refer to appropriate Workshop Manual section 01-01 CYLINDER LEAKAGE DETECTION under ENGINE COMPONENT TEST.

- If low compression is found in a cylinder that did not have a misfire detected, then proceed with normal engine diagnostics. Refer to appropriate Workshop Manual section 01-01 SYMPTOM TROUBLESHOOTING CHART - ENGINE MECHANICAL.

4. If the exhaust valve is identified as the source, replace both cylinder heads with the newly released service cylinder heads. Refer to Workshop Manual section 01-10B CYLINDER HEAD GASKET REMOVAL/INSTALLATION - 3.0L.

5. Verify repair.




PART(S) INFORMATION

WARRANTY INFORMATION

NOTE:
- This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair. Refer to the Warranty Wizard for warranty term information.

- Additional diagnostic time cannot be claimed for this repair.

Warranty Type A

Symptom Code 08

Damage Code 9E

Part Number Main Cause As necessary

Quantity As necessary

Operation Number Labor Hours
YY429XRX 0.8 Hrs Max (Diagnostic Time)
B0301ERX 5.3 Hrs (Cylinder Head R - Both sides)
B0301ERX 5.3 Hrs (Cylinder Head R - Both sides)
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