2017 BMW M6 Gran Coupe Engine Is Stalling

Common Causes of Engine Stalling in Your 2017 BMW M6 Gran Coupe and How to Resolve Them

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Reviewed by
Devin Cabugcal
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 2017 BMW M6 Gran Coupe 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 2017 BMW M6 Gran Coupe 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.

If the MAF sensor sends an erroneous signal, a few things happen. The engine's computer will trigger the check engine light, and the on-board diagnostic (OBD) trouble codes will reflect the airflow discrepancy noted by the MAF sensor. Depending on the reported volume of air, the engine may try to compensate for these conditions, causing the engine to burn excessive amounts of fuel and emit black smoke from the exhaust. In this case, the OBD trouble codes would also reference faults recognized by the exhaust oxygen sensors. The engine may also have issues with idling roughly, failing to start, stalling, hesitation, power loss, misfires, and fuel consumption.

»MORE: Signs of a failing mass airflow sensor

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.

What are the initial diagnostic steps to take when a 2017 BMW M6 Gran Coupe engine is stalling?

When faced with a stalling engine in your 2017 BMW M6 Gran Coupe, it's essential to adopt a systematic diagnostic approach to identify the root cause. Start by checking for error codes using a diagnostic scanner, as these codes can reveal specific issues within the vehicle's systems. Next, inspect the fuel system, focusing on the fuel pump, filter, and injectors, since any malfunction here can lead to inadequate fuel delivery and stalling. Following this, examine the ignition system components, including spark plugs and ignition coils, as faulty parts can cause misfires that disrupt engine performance. Additionally, evaluate the air intake system to ensure it is unobstructed and that the air filter is clean, as a compromised air-fuel mixture can also result in stalling. Don’t forget to check critical sensors like the mass airflow and oxygen sensors, as their failure can send incorrect data to the engine control unit (ECU), exacerbating the stalling issue. Finally, review the ECU's functionality to confirm it is communicating effectively with all vehicle systems. By methodically following these steps, you can effectively diagnose and address the stalling problem in your BMW M6 Gran Coupe.

What are the common problems that could cause the engine to stall in a 2017 BMW M6 Gran Coupe?

When diagnosing engine stalling in a 2017 BMW M6 Gran Coupe, it's crucial to consider several common problems that could be at play. One of the primary culprits is the fuel system, where issues like a clogged fuel filter or a malfunctioning fuel pump can disrupt the flow of fuel to the engine, leading to stalling. Additionally, the ignition system plays a vital role; failing components such as ignition coils or worn spark plugs can prevent the engine from firing properly. Air intake problems, including leaks or blockages, can also affect the air-fuel mixture, causing the engine to stall unexpectedly. Furthermore, sensor failures, particularly with the mass airflow or crankshaft position sensors, can result in erratic engine behavior. Lastly, electrical issues, such as a weak battery or a faulty alternator, can compromise the engine's performance. By understanding these potential issues, DIY enthusiasts can take the necessary steps to troubleshoot and resolve stalling problems effectively.

How urgent is it to address the engine stalling issue in a 2017 BMW M6 Gran Coupe?

When it comes to the engine stalling issue in a 2017 BMW M6 Gran Coupe, urgency cannot be overstated. Engine stalling poses significant safety risks, as it can lead to a sudden loss of power while driving, potentially endangering both the driver and others on the road. This situation is particularly perilous in scenarios that require immediate acceleration, such as merging onto highways or navigating busy intersections. Moreover, neglecting this issue can result in the vehicle becoming inoperable, leaving you stranded in unsafe locations. Beyond immediate safety concerns, engine stalling often signals underlying mechanical or electrical problems that can escalate if not addressed promptly, leading to more extensive and costly repairs down the line. Regular maintenance is key to ensuring the longevity and performance of your vehicle, making it essential to prioritize the diagnosis and repair of any stalling issues. Therefore, if you experience engine stalling in your BMW M6 Gran Coupe, it is crucial to consult a qualified mechanic without delay to safeguard your vehicle's performance and your safety on the road.

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