2012 Mitsubishi Outlander Engine Is Stalling

Common Causes of Engine Stalling in Your 2012 Mitsubishi Outlander 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 2012 Mitsubishi Outlander 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 Mitsubishi Outlander 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 when a 2012 Mitsubishi Outlander engine is stalling?

When your 2012 Mitsubishi Outlander engine begins to stall, the first step is to assess the fuel system. Start by ensuring that there is enough fuel in the tank, as a low fuel level can often lead to stalling. Next, inspect the fuel pump and filter for any signs of malfunction, as these components are crucial for proper fuel delivery. Following this, turn your attention to the ignition system; check the spark plugs for any wear or damage and test the ignition coils to confirm they are functioning correctly. The air intake system is another critical area to examine; ensure the air filter is clean and free of obstructions, and inspect the throttle body for any issues that could restrict airflow. Utilizing an OBD-II scanner can provide valuable insights by revealing any error codes that may indicate specific problems. Additionally, check for vacuum leaks by inspecting hoses for cracks, as these can significantly impact engine performance. Lastly, verify that the engine coolant temperature sensor is operating correctly, as it plays a vital role in maintaining optimal engine function. By following these diagnostic steps, you can effectively identify and address the underlying causes of stalling in your Outlander.

What are the common causes of engine stalling in a 2012 Mitsubishi Outlander?

When diagnosing engine stalling in a 2012 Mitsubishi Outlander, it's essential to consider several common problems that could be at play. One of the primary culprits is the fuel system, where issues such as a clogged fuel filter or a failing fuel pump can disrupt the flow of fuel to the engine, leading to stalling. Additionally, the ignition system plays a crucial role; faulty spark plugs or a malfunctioning ignition coil can prevent the engine from firing properly. Airflow obstructions, often caused by a dirty air filter or a malfunctioning mass airflow sensor, can also upset the delicate air-fuel mixture necessary for optimal engine performance. Furthermore, electrical system malfunctions, including a weak battery or alternator issues, can result in insufficient power to keep the engine running smoothly. Lastly, sensor failures, particularly with the crankshaft or camshaft position sensors, can send incorrect signals to the engine control unit, causing stalling. By systematically checking these areas, DIYers can effectively identify and address the root causes of engine stalling, ensuring their Outlander runs reliably.

How urgent is it to address the engine stalling issue in a 2012 Mitsubishi Outlander?

When it comes to a 2012 Mitsubishi Outlander 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 essential. Ignoring these symptoms may not only leave you stranded but can also escalate into more severe mechanical or electrical problems, resulting in costly repairs or towing services. Moreover, regular maintenance and timely intervention can prevent these issues from worsening, ultimately saving you both time and money. For DIY enthusiasts, it’s crucial to recognize that while some repairs may seem manageable, the potential consequences of neglecting engine stalling can be dire. Therefore, diagnosing and addressing the problem as soon as possible is vital to ensure the safety of everyone in the vehicle and to maintain the overall health of your Outlander.

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