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Dodge Ram Cummins 5.9L Engine Control Module (ECM) 2002: OEM 3947912

DODGE RAM CUMMINS 5.9L ENGINE CONTROL MODULE (ECM) 2002: OEM 3947912

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,515.00

-
+

CORE CHARGE:

$500.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER 3947912
PART TYPE Engine Control Module (ECM)
BRAND Tamerx Diesel Products
ENGINE MAKE Dodge Ram
ENGINE TYPE Cummins 5.9L
YEAR 2002
PART NUMBER 3947912RM

PRODUCT DESCRIPTION

This is a Remanufactured, Tamerx Engine Control Module (ECM), Tamerx part number 3947912RM ( OEM Part Number 3947912 ).This part is primarily made for a Dodge Ram Cummins 5.9L, production years 2002, and comes with a Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM 3947912
Additional OEM 3947912

ADDITIONAL DETAILS

CONDITION New
UPC / Barcode
WEIGHT 8.00 LBS

SHIPPING OPTIONS

Ship Weight : 8.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


The Dodge Ram Cummins 5.9L Engine Control Module (ECM) (2002) is a high-quality replacement designed to meet OEM specifications (Part 3947912), ensuring precise engine management for optimal performance, fuel efficiency, and emissions control. Built for durability and reliability, this ECM is essential for maintaining or restoring the functionality of your Cummins 5.9L engine. Trust TamerX for premium diesel components that keep your truck running smoothly and efficiently.

FITMENT CHART

YEAR MAKE ENGINE(S)
2002 Dodge Ram Cummins 5.9L

PEOPLE ALSO ASKS | BLOG(S)

The Engine Control Module (ECM) is a critical component in your Dodge Ram Cummins 5.9L 2002 engine, ensuring optimal operation by managing various engine functions. Understanding its components can help in maintaining the vehicle’s efficiency.

Key Components of the ECM

  • Microprocessor
    • The brain of the ECM, responsible for processing the data received from various sensors and sending appropriate commands to different engine components.
  • Power Supply
    • Ensures the ECM has a constant power source, allowing it to function properly without interruption.
  • Memory Chips
    • Store essential data and settings related to the engine’s durability, fuel injection timing, and other crucial functions.
  • Input/Output Circuits
    • Manage the communication between the ECM and the engine sensors, as well as the actuators, to regulate fuel delivery, ignition timing, and more.
  • Communication Ports
    • Allow for diagnostic tools to connect to the ECM, providing essential data for troubleshooting and repairs.

Regular inspection of these components is crucial to keep your Dodge Ram Cummins 5.9L running smoothly. A malfunctioning ECM can lead to various engine issues, including starting problems and poor fuel efficiency. If you notice any unusual behavior in your vehicle, it might be time to check the ECM.

The Engine Control Module (ECM) is a crucial component in your vehicle, responsible for managing various engine functions. When the ECM starts to fail, it can lead to a variety of issues that affect your vehicle's durability and reliability. Recognizing the signs of a bad ECM early can help prevent more severe problems.

Common Symptoms of a Bad ECM:

  • Check Engine Light
    • One of the first indicators of a bad ECM is the illumination of the check engine light. This warning light signals that there’s an issue with your engine’s electronic systems.
  • Engine Stalling
    • If your engine unexpectedly stalls while driving or has trouble starting, it could be due to a failing ECM.
  • Poor Fuel Efficiency
    • A malfunctioning ECM can disrupt the fuel injection process, leading to poor fuel economy.
  • Erratic Engine Behavior
    • You may notice rough idling, misfires, or other unusual engine behaviors that are often linked to a faulty ECM.

If you’re experiencing any of these symptoms, it’s essential to address the issue promptly. Ignoring a bad ECM can lead to more significant engine problems down the line.

Inspect power and ground connections, communication circuits, and scan for software corruption.

Excess heat can cause circuit board damage, intermittent function loss, or complete ECM failure.

It should be inspected during routine vehicle servicing, especially when diagnosing performance issues or error codes.

Regularly inspect electrical connections, update software when needed, avoid exposure to extreme heat or moisture, and ensure proper grounding.