Monterey V6-4.2L VIN 2 (2004)
b. If evidence of water is not found, proceed to Step 4 with the vehicle's original PCM.
4. Set the PCM top plate in a clean, dry location where the circuitry will be protected from damage.
5. With the PCM cover removed, drill a 1/4" (5 mm) hole on each of the four (4) corners of the PCM cover. Get as close to the corner as possible.
(Figure 3)
6. De-burr the edges on both inside and outside surfaces. (Figure 3) Vacuum off all chips and wipe off all metal dust and any machining oil.
7. Clean the surfaces of the PCM cover with Motorcraft(R) Metal Surface Prep or equivalent. Also clean the edges of the PCM top plate. The metal
surfaces must be completely clean before proceeding to Step 8.