How to remove and replace the Engine Control Module (ECM) on Mercury Grand Marquis?

The replacement process of Powertrain Control Module (PCM) requires all customer keys for programming during installation since PCM replacement does not necessitate new keys. Follow the required procedure to obtain the module configuration through necessary module configuration retrieval steps. After releasing the clips you should disconnect the three PCM electrical connectors. Untighten and remove the bolt which holds the PCM in position before extracting the module. Install the PCM by placing it correctly then fasten it with the bolt and tighten it to 10 Nm (89 lb-in). Reinstall the three PCM electrical connector clips after reconnecting them all. You should complete module configuration retrieval steps to restore the module configuration. The completion of passive anti-theft system (PATS) reprogramming requires users to perform the Key Programming Using Two Programmed Keys procedure.

How to service the Engine Control Module on Mercury Grand Marquis?

Service of the Engine Control Module begins with disconnecting the battery ground cable. The service begins with unclipping the three powertrain control module (PCM) electrical connectors. Fix the PCM retaining bolt while tightening it to 10 Nm (89 lb-in) before installation. The new or repaired PCM should be installed into the mounting bracket through the same procedure reversed from removal.

OEM Mercury Grand Marquis Engine Control Module

Engine Control Computer

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27 Engine Control Modules found

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Mercury Grand Marquis Control Module Part Number: 1U2Z-12A199-AA
$58.04 MSRP: $93.64
You Save: $35.60 (39%)
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Product Specifications
- Other Name: Module Assembly - Ignition Amplifier; Ignition Control Module; Ignition Module; ECM
- Replaces: DY-683, E9VZ-12A199-A, F2PZ-12A199-AA, D9VZ-12A199-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1986 Mercury Grand Marquis | Base, Colony Park, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
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Mercury Grand Marquis Control Module Part Number: DU2Z-12A297-A
$60.00 MSRP: $98.73
You Save: $38.73 (40%)
ADD TO CART
Product Specifications
- Other Name: Module - Ignition; Ignition Control Module; Ignition Module; Computer; ECM
- Replaces: 5U2Z-12A297-A, E43Z-12A297-A, 5U2Z-12A297-C, E6SZ-12A297-A, DY-1074, DY-1076
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
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Mercury Grand Marquis ECM Part Number: 1W7Z-12A650-DE
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Manufacturer Note: Powertrain Control Module (PCM) #1W7F 12A650-DE (EEC-V) TYPE: MLC-467A (REPROGRAMMABLE)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 1U7Z-12A650-CVB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 1U7Z-12A650-DRB
Product Specifications
- Other Name: Module - Engine Control
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 1U7Z-12A650-DUB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 1U7Z-12A650-DXB
Product Specifications
- Other Name: Module - Engine Control
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis ECM Part Number: 3U7Z-12A650-AMB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM, Black Oak Part Number: 3W7Z-12A650-BEB
Product Specifications
- Other Name: Module - Pcm - Black; Engine Control Module (ECM); Engine Control Module; ECM
- Manufacturer Note: Powertrain Control Module (PCM) #3W7A 12A650-BEB (EEC-V)TYPE: MPC-185 (REPROGRAMMABLE)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 4U7Z-12A650-FSA
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module; ECM
- Replaces: 4W7Z-12A650-ACC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis ECM Part Number: 4U7Z-12A650-KKA
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 5W7Z-12A650-ABARM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module; ECM
- Replaces: 5U7Z-12A650-CFC, 5W7Z-12A650-TG, 5W7Z-12A650-ABA, 5U7Z-12A650-CFB, 5U7Z-12A650-CFD, 5U7Z-12A650-KC, 5U7Z-12A650-KD, 5U7Z-12A650-DJB, 5W7Z-12A650-AAA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 6W1Z-12A650-ABARM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module; ECM
- Replaces: 6W7Z-12A650-ANB, 6U7Z-12A650-CSA, 6W1Z-12A650-ARC, 6U7Z-12A650-CVA, 6W1Z-12A650-ABA, 6U7Z-12A650-CMA, 6W1Z-12A650-AFB, 6U7Z-12A650-CUA, 6W1Z-12A650-AJB, 6W1Z-12A650-RC, 6W1Z-12A650-UC, 6W1Z-12A650-AEB, 6U7Z-12A650-CDA, 6W1Z-12A650-AHB, 6W7Z-12A650-ANC, 6W7Z-12A650-ATC, 6W1Z-12A650-AKB, 6W7Z-12A650-ASC, 6W7Z-12A650-XC, 6U7Z-12A650-CLA, 6U7Z-12A650-CTA, 6W1Z-12A650-AGB, 6W1Z-12A650-SC, 6U7Z-12A650-CNA, 6W1Z-12A650-PC, 6W7Z-12A650-AFA, 6W7Z-12A650-AMB, 6W1Z-12A650-ACA, 6U7Z-12A650-CYA, 6W1Z-12A650-ANB, 6U7Z-12A650-CZA, 6W7Z-12A650-UC, 6U7Z-12A650-CPA, 6W7Z-12A650-ABC, 6W7Z-12A650-APB, 6U7Z-12A650-CKA, 6U7Z-12A650-CRA, 6U7Z-12A650-CCA, 6W1Z-12A650-APC, 6W1Z-12A650-TC, 6W7Z-12A650-AGA, 6W1Z-12A650-AMB, 6W1Z-12A650-UB, 6W7Z-12A650-VC, 6U7Z-12A650-CXA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis ECM Part Number: 7W7Z-12A650-AAC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module; Module - Engine Control - Eec V
- Manufacturer Note: 7FB1SB0510 (SJJ2)
- Replaces: 7W7Z-12A650-AAB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 7W7Z-12A650-AEB
Product Specifications
- Other Name: Module - Engine Control - EEC; Module - Engine Control - Eec V
- Manufacturer Note: 7FB1BF0505 (NCP1)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 7W7Z-12A650-AFB
Product Specifications
- Other Name: Module - Engine Control - EEC; Module - Engine Control - Eec V
- Manufacturer Note: 7FB1HF0505 (SKG1)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 7W7Z-12A650-ZC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V
- Manufacturer Note: 7FB1SB0A10 (JKV2)
- Replaces: 7W7Z-12A650-ZB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: 8W7Z-12A650-MC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module; ECM; Module - Engine Control - Eec V
- Manufacturer Note: 8FB1BF0520 (KSM2)
- Replaces: 8W7Z-12A650-MB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: F6PZ-12A650-DJA
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCM Part Number: F6PZ-12A650-DNA
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS

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Mercury Grand Marquis Engine Control Module

OEM Engine Control Module boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Engine Control Module with long life and a perfect fit. Come to our website and find genuine Mercury Grand Marquis parts. We keep a wide inventory of OEM Grand Marquis parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

The Mercury Grand Marquis Engine Control Module or ECM is actually as famous as it is for its reliability and performance in different models of the vehicle, and is taskmaster electronic controller that manages the proper function of the automobile engine. Among such components there is this rather complex Engine Control Module which receiving comprehensive data from countless obligatory sensors, like for example oxygen and throttle position sensors, controls significant parameters, including air-fuel mixture and, for instance, idle speed. By controlling fuel flow, and enabling ignition coils to spark, the Mercury Grand Marquis ECM optimizes the combustion process and improves efficiency and safety at the same time. Fit is an important element, because the ECM is made for particular years and models of Grand Marquis, new units and remanufactured ones that meet current specifications. These technological advancements of the Mercury Grand Marquis Engine Control Module has gone through different generations; come up with advanced systems that enhance proper performance of the vehicle and at the same time making them economical as per the fuel consumption rates. Most notably the ECM possesses characteristics of flexibility in relation to driving and this gives it a competitive edge in the automotive market. The Mercury Grand Marquis, manufactured since 1975 and up to 2011, has uniformly accrued from these improvements and affirmed its stylistic corroboration as a reliable car. The Mercury Grand Marquis Engine Control Module entails performance upgrade and advanced technology to enhance the durability and reliability of the Grand Marquis thus making it a favorite for drivers who are looking for efficiency in vehicle use as well as safety.

Mercury Grand Marquis Engine Control Module Parts and Q&A

PCM
7W7Z-12A650-AEB
Q: How to remove and replace the Engine Control Module (ECM) on Mercury Grand Marquis?
A:
The replacement process of Powertrain Control Module (PCM) requires all customer keys for programming during installation since PCM replacement does not necessitate new keys. Follow the required procedure to obtain the module configuration through necessary module configuration retrieval steps. After releasing the clips you should disconnect the three PCM electrical connectors. Untighten and remove the bolt which holds the PCM in position before extracting the module. Install the PCM by placing it correctly then fasten it with the bolt and tighten it to 10 Nm (89 lb-in). Reinstall the three PCM electrical connector clips after reconnecting them all. You should complete module configuration retrieval steps to restore the module configuration. The completion of passive anti-theft system (PATS) reprogramming requires users to perform the Key Programming Using Two Programmed Keys procedure.
PCM
6W1Z-12A650-ABARM
Q: How to service the Engine Control Module on Mercury Grand Marquis?
A:
Service of the Engine Control Module begins with disconnecting the battery ground cable. The service begins with unclipping the three powertrain control module (PCM) electrical connectors. Fix the PCM retaining bolt while tightening it to 10 Nm (89 lb-in) before installation. The new or repaired PCM should be installed into the mounting bracket through the same procedure reversed from removal.