2007 INFINITI FX45 Engine Is Stalling

Common Causes of Engine Stalling in Your 2007 INFINITI FX45 and How to Resolve Them

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Reviewed by
Andrew Hajjar
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 2007 INFINITI FX45 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 2007 INFINITI FX45 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 are the initial diagnostic steps to take for a 2007 INFINITI FX45 experiencing engine stalling?

When faced with engine stalling in a 2007 INFINITI FX45, it's essential to adopt a methodical diagnostic approach to identify the underlying issue effectively. Start by examining the fuel system, as inadequate fuel delivery can often lead to stalling. Check the fuel pump, filter, and injectors for any signs of malfunction. Next, turn your attention to the ignition system; inspect the spark plugs, ignition coils, and cables to ensure they are in good condition and delivering the necessary spark. Utilizing an OBD-II scanner is a crucial step, as it allows you to retrieve error codes from the vehicle's computer, providing insights into potential problems. Additionally, inspect the air intake system for any obstructions or leaks that could hinder engine performance. Finally, assess the engine sensors, including the mass airflow and oxygen sensors, to confirm they are functioning correctly and relaying accurate data to the engine control unit. By following this structured approach, you can effectively diagnose and address the stalling issue in your INFINITI FX45, paving the way for a smoother driving experience.

What are the common problems that could cause the engine to stall in a 2007 INFINITI FX45?

When diagnosing engine stalling in a 2007 INFINITI FX45, it's essential to consider several key areas that could be contributing to the problem. Start by examining the fuel system, as a clogged fuel filter or a failing fuel pump can disrupt the flow of fuel to the engine, leading to stalling. Next, inspect the ignition system; worn spark plugs or a malfunctioning ignition coil can prevent the engine from firing properly. Additionally, check for airflow obstructions, such as a dirty air filter or issues with the mass airflow sensor, which can affect the air-fuel mixture necessary for optimal engine performance. Electrical issues, including faulty sensors or wiring problems, may also play a role, so ensure that all connections are secure and functioning correctly. Don't overlook the possibility of vacuum leaks, as these can cause a loss of power and contribute to stalling. Lastly, examine the exhaust system for blockages, such as a clogged catalytic converter, which can hinder engine performance. By systematically addressing these areas, you can effectively troubleshoot and resolve the stalling issue, ensuring your INFINITI FX45 runs smoothly.

How urgent is it to address the stalling engine in a 2007 INFINITI FX45?

Addressing a stalling engine in a 2007 INFINITI FX45 is of utmost urgency due to the significant safety risks it poses. A stalling engine can lead to sudden power loss while driving, which can be particularly dangerous in high-traffic situations or at high speeds, increasing the likelihood of accidents. Moreover, neglecting this issue can exacerbate underlying problems, leading to more severe mechanical failures that may require expensive repairs. By promptly diagnosing and fixing the stalling issue, you not only enhance the vehicle's performance but also extend its lifespan, ensuring a safer driving experience. Therefore, it is crucial to take immediate action when faced with engine stalling to mitigate risks and maintain the vehicle's reliability.

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