2002 Mercedes-Benz ML55 (W163) — Repair Solution

5.4L M113.981 8cyl 24v SOHC MPFI Petrol Auto · Misfire / Misfire Codes · Engine

Mercedes-Benz ML55 (W163) Misfire / Misfire Codes Engine Diagnostic Sequence Available

Vehicle Details

Make: Mercedes-Benz
Model: ML55 (W163)
Year: 2002
Engine: 5.4L M113.981 8cyl 24v SOHC MPFI Petrol Auto
Area: Engine
Category: Misfire / Misfire Codes

Customer Complaint

Engine miss and goes into limp mode.

Problem Summary

Engine runs well until it is revved to approximately 4500 rpm and will then go into limp mode. If you switch off the ignition it will start and run well until 4500 rpm again.

Checked live data to check:
Oxygen sensor switching (front and rear).
Mass airflow meter (MAF).
Smooth running data.
Check battery and charging voltage.
Check transmission P/N switch.
Clean mass airflow meter (MAF).
Check fuel injector fuel rate.
Fit new spark plugs.
Chech fuel pressure (58 psi).

Using Pico scope:
Check ignition coil trigger and output voltage.

Smoke test OK.

Repair history:
Engine oil and filter changed.
Transmission service.
Coolant serviced.
Spark plugs.

Diagnostic Sequence

The step-by-step diagnostic process used to identify this fault is available to TaT members.

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Fault Description

The detailed fault description and root cause analysis for this 2002 Mercedes-Benz ML55 (W163) is available to TaT members.

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Verified Repair Solution

The confirmed repair procedure for this 2002 Mercedes-Benz ML55 (W163) is available to TaT members. Includes the verified fix and technician tips.

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Quick Facts

CodeMERW102130
Vehicle2002 Mercedes-Benz ML55 (W163)
Engine5.4L M113.981 8cyl 24v SOHC MPFI Petrol Auto
ComplaintVisible
Diag. SequenceMembers Only
SolutionMembers Only

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