2021 Ram 2500 Engine Is Stalling

Common Causes of Engine Stalling in Your 2021 Ram 2500 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
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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 2021 Ram 2500 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 2021 Ram 2500 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 when a 2021 Ram 2500 engine is stalling?

When faced with a stalling engine in your 2021 Ram 2500, it's essential to adopt a methodical diagnostic approach to identify and resolve the issue effectively. Start by checking for error codes using an OBD-II scanner, as these codes can pinpoint specific problems within the engine's systems. Next, inspect the fuel system to ensure that clean fuel is reaching the engine; this includes examining the fuel pump, filter, and injectors for any blockages or malfunctions. Following this, turn your attention to the ignition system, where faulty spark plugs or ignition coils can lead to stalling. Additionally, evaluate the air intake system by checking the air filter for clogs that could restrict airflow. Don't overlook the importance of sensors; ensure that components like the mass airflow sensor and throttle position sensor are functioning correctly, as they play a crucial role in engine performance. Lastly, review all electrical connections related to the engine, as poor wiring or loose connections can cause intermittent stalling. By systematically addressing these areas, you can effectively diagnose and potentially resolve the stalling issue in your vehicle.

What are the common problems that could cause the engine to stall in a 2021 Ram 2500?

When diagnosing engine stalling issues in a 2021 Ram 2500, it's essential to consider several common problems that could be at play. First, fuel system issues are often a primary culprit; a clogged fuel filter, a failing fuel pump, or malfunctioning fuel injectors can disrupt the flow of fuel, leading to stalling. Additionally, electrical problems such as a faulty ignition coil or malfunctioning sensors, including the crankshaft and camshaft position sensors, can interrupt the engine's operation. Air intake or vacuum leaks can also significantly affect performance by altering the air-fuel mixture, which is crucial for smooth engine function. Overheating engines, often due to cooling system failures, may stall as a protective measure to prevent further damage. Furthermore, transmission issues, such as a failing torque converter or low transmission fluid, can contribute to stalling. Lastly, software or computer-related problems, particularly with the engine control module (ECM), can lead to unexpected engine behavior. By systematically addressing these potential issues, DIY enthusiasts can effectively troubleshoot and resolve stalling problems in their Ram 2500.

How urgent is it to address the engine stalling issue in a 2021 Ram 2500?

Addressing the engine stalling issue in a 2021 Ram 2500 is of utmost urgency due to the significant safety risks it poses. Stalling while driving, particularly at high speeds or in heavy traffic, can lead to a loss of control, increasing the likelihood of accidents. Moreover, if the stalling is not resolved quickly, it can lead to further damage to critical engine components, resulting in more extensive and costly repairs down the line. Additionally, neglecting this issue can negatively affect fuel efficiency and overall vehicle performance, making it essential for owners to prioritize diagnosing and fixing the problem. By taking prompt action, you not only ensure your safety but also protect your investment in the vehicle, maintaining its reliability and efficiency for the long haul.

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