2019 INFINITI QX50 Engine Is Stalling

Common Causes of Engine Stalling in Your 2019 INFINITI QX50 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
0%
15% chance it's the
Air Intake System
0%
55% chance it's
Something else
The most common reasons a 2019 INFINITI QX50 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 2019 INFINITI QX50 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 for a 2019 INFINITI QX50 experiencing engine stalling?

When faced with engine stalling in a 2019 INFINITI QX50, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Start by checking for error codes using an OBD-II scanner, as these codes can reveal specific issues within the vehicle's systems. Next, inspect the fuel system, including the fuel pump and injectors, to ensure they are delivering the right amount of fuel; a malfunction here is a common culprit for stalling. Following this, examine the ignition system components such as spark plugs and ignition coils for any signs of wear, as a faulty ignition can disrupt engine performance. Additionally, ensure that the air intake system is clear of obstructions, as a clogged air filter can affect the air-fuel mixture. Don’t overlook the importance of sensors; check the mass airflow and throttle position sensors for proper functionality, as they play a critical role in engine management. Finally, evaluate the battery and charging system to rule out electrical issues that could lead to stalling. By methodically working through these steps, you can effectively diagnose and address the stalling issue in your INFINITI QX50.

What are the common problems that could cause the engine to stall in a 2019 INFINITI QX50?

When diagnosing engine stalling in a 2019 INFINITI QX50, it's essential to consider several common problems that could be affecting performance. One of the primary culprits is the fuel system, where a faulty fuel pump or a clogged fuel filter can hinder fuel delivery, resulting in stalling. Additionally, the mass airflow sensor plays a critical role in maintaining the correct air-fuel mixture; if it malfunctions, it can disrupt engine performance and lead to stalling. Ignition system issues, such as failing ignition coils or worn spark plugs, can also contribute to this problem, as they are vital for proper engine firing. Furthermore, the engine control module (ECM) and various sensors, including the crankshaft and camshaft position sensors, are integral to engine operation; any faults here can trigger stalling episodes. To prevent these issues, regular maintenance is crucial. Timely oil changes and tune-ups can help ensure that your INFINITI QX50 runs smoothly, reducing the likelihood of stalling and enhancing overall engine reliability. By being proactive and addressing these potential problems, DIY enthusiasts can maintain their vehicle's performance and longevity.

How urgent is it to address the engine stalling issue in a 2019 INFINITI QX50?

When it comes to a 2019 INFINITI QX50 experiencing engine stalling, the urgency of addressing this issue cannot be overstated. Engine stalling can lead to sudden loss of power while driving, creating a significant safety hazard for both the driver and others on the road. Ignoring these symptoms may not only compromise your safety but can also result in more extensive damage to the engine or related components, leading to costly repairs that could have been avoided. For those inclined to take a DIY approach, it is crucial to recognize that timely intervention can prevent complications and ensure the vehicle remains reliable. Consulting with a qualified mechanic or an authorized INFINITI service center is advisable, as they can provide a thorough diagnosis and effective solutions. Ultimately, prioritizing the resolution of engine stalling issues is essential for maintaining the performance and longevity of your vehicle, making it imperative to act swiftly.

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