2012 INFINITI FX50 Engine Is Stalling

Common Causes of Engine Stalling in Your 2012 INFINITI FX50 and How to Resolve Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
0%
15% chance it's the
Air Intake System
0%
55% chance it's
Something else
The most common reasons a 2012 INFINITI FX50 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 2012 INFINITI FX50 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.

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 diagnostic steps should be taken to address the stalling issue in a 2012 INFINITI FX50?

When tackling a stalling issue in your 2012 INFINITI FX50, it's essential to adopt a methodical diagnostic approach. Start by checking the check engine light; if illuminated, use an OBD-II scanner to retrieve error codes that can pinpoint specific problems. Next, inspect the fuel system, focusing on the fuel pump, filter, and injectors to ensure they are delivering adequate fuel to the engine. Following this, examine the ignition system, including spark plugs and ignition coils, as faults here can lead to stalling. Don’t overlook the air intake system; check for clogs or leaks that could disrupt the air-fuel mixture. Additionally, test critical sensors like the mass airflow and throttle position sensors to confirm they are functioning correctly. It's also wise to assess the battery and charging system, as electrical issues can contribute to stalling. Finally, ensure the engine control module is operating properly, as it plays a vital role in engine performance. By systematically following these steps, you can effectively diagnose and address the stalling issue in your vehicle.

What are the common problems that could cause the engine to stall in a 2012 INFINITI FX50?

When troubleshooting engine stalling in a 2012 INFINITI FX50, it's crucial to consider several common problems that may arise. One of the primary culprits is the fuel system, where 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 ignition coils or worn spark plugs can prevent the engine from firing properly. Another significant factor is the airflow sensor, which, if faulty, can throw off the air-fuel mixture necessary for optimal engine performance. The throttle body also deserves attention, as dirt buildup or mechanical failure can hinder airflow, causing the engine to stall. Furthermore, issues with the Engine Control Module (ECM), such as software glitches or electrical faults, can lead to erratic engine behavior. Lastly, vacuum leaks can create imbalances in the engine's operation, resulting in stalling. By systematically checking these components, DIYers can effectively diagnose and address the underlying issues affecting their vehicle's performance.

How urgent is it to address the engine stalling issue in a 2012 INFINITI FX50?

When it comes to a 2012 INFINITI FX50 experiencing engine stalling, the urgency of addressing this issue cannot be overstated. Engine stalling can lead to a sudden loss of power, which poses significant safety risks, especially in high-traffic situations where quick acceleration or maneuvering is necessary. Ignoring this symptom may not only leave you stranded but could also escalate into more severe mechanical failures, resulting in costly repairs. Additionally, engine stalling can indicate underlying problems such as fuel system malfunctions or electrical issues that may worsen over time if left unchecked. For DIY enthusiasts, it is crucial to recognize that timely intervention is essential not only for the safety of the driver and passengers but also for the overall performance and longevity of the vehicle. Regular maintenance and prompt repairs are key to ensuring that your INFINITI remains reliable on the road, making it imperative to address any stalling issues as soon as they arise.

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