Mercedes-Benz GLC63 AMG Engine Is Stalling

Common Causes of Engine Stalling in Your Mercedes-Benz GLC63 AMG and How to Resolve Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
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15% chance it's the
Air Intake System
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55% chance it's
Something else
The most common reasons a Mercedes-Benz GLC63 AMG engine is stalling are the fuel system, the air intake system, or the ignition system.
  • Fuel System: A clogged fuel filter or failing fuel pump can restrict fuel flow, resulting in poor engine performance and starting issues.
  • Air Intake System: A dirty or damaged air filter or a malfunctioning mass airflow sensor can restrict airflow, leading to reduced engine performance and efficiency.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Mercedes-Benz GLC63 AMG engine is stalling?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

The most likely symptom of a faulty fuel temperature sensor is a check engine light. When the sensor goes bad, the Engine Control Module signals the driver that there is a problem by turning on the dash light. Poor fuel economy might also be noticed. In some cases, a failing fuel temperature sensor could lead to hard starting of the engine or an engine misfire and poor performance.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

Troubleshooting Engine Stalling in a Mercedes-Benz GLC63 AMG

When faced with engine stalling in your Mercedes-Benz GLC63 AMG, it's essential to adopt a systematic diagnostic approach. Start by checking the air filter, as a dirty filter can significantly restrict airflow, leading to stalling. Replacing it is a straightforward task that can often resolve the issue. Next, inspect the engine sensors, which play a crucial role in regulating fuel injection and emissions. If these sensors are malfunctioning, they may send incorrect data to the engine control module, causing stalling. Testing and replacing faulty sensors can be more complex but is vital for proper engine function. Lastly, consider the fuel pump; a faulty pump can disrupt fuel delivery, leading to stalling. If the simpler fixes do not resolve the issue, testing the fuel pump's functionality may be necessary. By following this diagnostic approach, you can effectively identify and address the root causes of engine stalling in your GLC63 AMG.

What Are the Common Causes of Engine Stalling in a Mercedes-Benz GLC63 AMG?

When diagnosing engine stalling in a Mercedes-Benz GLC63 AMG, it's essential to consider several common problems that could be affecting your vehicle's performance. A faulty ignition system is often at the forefront, as it plays a crucial role in starting and maintaining engine operation. Issues such as worn-out spark plugs or malfunctioning ignition coils can disrupt this process, leading to unexpected stalling. Additionally, a dirty air filter can significantly impact engine airflow, restricting the necessary oxygen supply and causing the engine to stall. Regularly checking and replacing the air filter can be a simple yet effective DIY solution. Lastly, a faulty fuel pump can also contribute to stalling, as it is responsible for delivering fuel to the engine. If you suspect this component is failing, it may require more in-depth troubleshooting or replacement. By addressing these common causes promptly, you can help ensure the smooth operation of your GLC63 AMG and prevent frustrating stalling issues.

Why is the Engine Stalling in a Mercedes-Benz GLC63 AMG?

When experiencing engine stalling in your Mercedes-Benz GLC63 AMG, it is crucial to address the issue promptly to avoid severe consequences. Ignoring symptoms such as unexpected engine shutdowns can not only compromise your safety on the road but also lead to further damage to your vehicle. For instance, a faulty ignition system or issues with the power supply cable can escalate, resulting in more extensive repairs if left unchecked. Additionally, problems with the positive crankcase ventilation (PCV) valve or fuel pumps can cause your engine to lose power while driving, increasing the risk of accidents. Monitoring the IAVC voltage during stalling episodes can also provide valuable insights into underlying issues that require immediate attention. By diagnosing and repairing these problems early, you can ensure the reliability of your vehicle and maintain a safe driving experience.

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Mercedes-Benz GLC63 AMG Engine Stalling: Causes & Solutions