Mercedes-Benz ML320 stalling issue after 10 minutes of driving despite O2 sensor replacement on Mercedes-Benz ML320

Submitted by tlgtq1 · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz ML320 owners report experiencing stalling issues after 10 minutes of driving, even after replacing the O2 sensor. These stalling problems may be attributed to issues within the fuel system, air intake system, or ignition system. Owners have noted that if the engine sputters and runs poorly before stalling, a faulty fuel pump could be responsible for a loss of fuel pressure. Additionally, a common cause of intermittent stalling is a malfunctioning sensor that can lead to sudden engine shutdowns. In certain instances, replacing the crank sensor has successfully resolved similar stalling issues. Furthermore, a malfunctioning Mass Air Flow (MAF) sensor, which sends incorrect signals to the engine's computer, can also contribute to stalling. To address these concerns, it is advisable for owners to check the fuel system for potential pressure issues, verify the functionality of the MAF sensor and other sensors, and inspect the ignition system for any faults that may lead to stalling episodes.

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