How to service the Engine Control Module on 2005 Mercury Grand Marquis?

A service procedure of the Engine Control Module includes removing battery ground cable, releasing clips, and de-connections of three electrical connectors of PCM. Disassemble the PCM by removing the PCM retaining bolt and removing the PCM. On re-fitting, screw the bolt by 10 Nm (89 lb-in) then do the reverse of the steps of removal.

OEM 2005 Mercury Grand Marquis Engine Control Module

Engine Control Computer

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2005 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
- Item Weight: 2.50 Pounds
- Item Dimensions: 14.4 x 9.7 x 4.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5W7Z-12A650-ABARM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Mercury Grand Marquis Submodels:
- GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L GAS

2005 Mercury Grand Marquis Engine Control Module

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2005 Mercury Grand Marquis Engine Control Module Parts Q&A

Q: How to service the Engine Control Module on 2005 Mercury Grand Marquis?
A: A service procedure of the Engine Control Module includes removing battery ground cable, releasing clips, and de-connections of three electrical connectors of PCM. Disassemble the PCM by removing the PCM retaining bolt and removing the PCM. On re-fitting, screw the bolt by 10 Nm (89 lb-in) then do the reverse of the steps of removal.