2010 Mercury Milan Engine Is Stalling

Common Causes of Engine Stalling in Your 2010 Mercury Milan 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 2010 Mercury Milan 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 2010 Mercury Milan 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 2010 Mercury Milan's engine is stalling?

When your 2010 Mercury Milan experiences engine stalling, it's essential to adopt a methodical diagnostic approach to identify the root cause. Start by examining the fuel system, as inadequate fuel delivery can lead to stalling; check for clogged fuel filters or failing fuel pumps. Next, inspect the air intake system to ensure that air is flowing freely into the engine, as blockages can disrupt performance. The ignition system is another critical area; look for worn spark plugs or faulty ignition coils that may prevent the engine from firing correctly. Pay attention to any symptoms such as rough idling or unexpected stalling, which can provide valuable clues. If the vehicle enters limp mode during acceleration, this could indicate a more serious issue that requires further investigation. Additionally, keep an eye on the check engine light; any trouble codes retrieved from the vehicle's onboard diagnostics can guide you toward specific problems. Lastly, don’t overlook the ignition switch; difficulty in starting or stalling while driving may suggest a malfunction that needs addressing. By following these steps, you can effectively narrow down the potential causes of the stalling issue and take informed actions to resolve it.

What are the common problems that could cause the engine to stall in a 2010 Mercury Milan?

When diagnosing engine stalling issues in a 2010 Mercury Milan, it's essential to consider several common problems that may be at play. One of the primary culprits is the fuel system, where issues like contaminated fuel or water in the gas tank can abruptly halt engine performance. Additionally, the ignition system plays a critical role; faulty spark plugs or coil packs can cause misfires, leading to stalling. Another significant concern is the electronic throttle, which has been frequently reported to malfunction, resulting in unexpected engine stalls while driving. Furthermore, a failing oxygen sensor can trigger a check engine light and manifest symptoms such as engine hesitation or misfiring, ultimately contributing to stalling. Other potential factors include transmission delays and power steering failures, which can also impact engine performance. Understanding these common problems is crucial for timely diagnosis and repair, ensuring the Mercury Milan operates smoothly and reliably.

How urgent is it to address the engine stalling issue in a 2010 Mercury Milan?

Addressing the engine stalling issue in a 2010 Mercury Milan is of utmost urgency due to the significant safety risks it poses. When an engine stalls unexpectedly, especially at high speeds, it can lead to a loss of control, increasing the likelihood of accidents. Moreover, neglecting this problem can exacerbate underlying issues within the vehicle's fuel, air intake, or ignition systems, potentially resulting in more severe damage and costly repairs down the line. By promptly diagnosing and repairing the stalling issue, you not only enhance your safety on the road but also maintain the reliability of your vehicle, preventing inconvenient breakdowns. Therefore, it is crucial to take immediate action to address any symptoms of engine stalling to ensure both your safety and the longevity of your Mercury Milan.

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2010 Mercury Milan Engine Stalling: Causes & Repairs