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How to Replace EGR Valve Vacuum Modulator 01-03 Mercury Mountaineer

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  1. step : Removing the Air Filter Box (0:35)
    • Unclip the air box cover
    • Pull out the air filter by hand
    • Lift the air filter box up and out
  2. step : Removing the EGR Vacuum Modulator (1:02)
    • Disconnect the vacuum modulator wiring harness
    • Remove the two 8mm nuts from the modulator
    • Pull up the modulator
    • Disconnect the hoses from the modulator
  3. step : Installing the Vacuum Modulator (1:44)
    • Connect the hoses to the vacuum modulator
    • Push the modulator onto its studs
    • Fasten the two 8mm nuts onto the modulator
    • Connect the modulator wiring harness
  4. step : Installing the Air Box (2:42)
    • Lower the air box into place using the locating tabs
    • Put the air filter into the air box
    • Clip on the air box cover

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Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of Thanks.

In this video, we're going to show you how to replace the EGR Vacuum Modulator on this 2003 Mercury Mountaineer. It's the same part and similar process on these Mountaineers from 2002 to 2003. The items you'll need for this is a new EGR valve vacuum modulator from, and an 8mm socket and ratchet.

Start off by lifting up on these clips and pulling them back. Then slide the top of your air intake box off. Pull out the air filter. Then lift up on the bottom of your air intake box, maneuver it free, and lift it up and out.

The vacuum modulator is located right here. Push the tab on the harness and disconnect it. Then you want to remove this 8mm nut, and this 8mm nut from the other side. We'll fast forward as Mike removes both of those. Now pull it from the studs, and then pull your two hoses free.

On the left is the old EGR valve vacuum modulator. On the right is the new one from 1A Auto. You can see they're identical and they'll fit exactly the same. Take your new EGR valve vacuum modulator and reconnect those two hoses, and then connect the harness. Then push the modulator onto those two studs, and replace those two 8mm nuts and tighten them up.

On the lower part of your air intake box, you want to push those two legs into those two holes. Just feed it down into place. Then push those two back clips into the side of the vehicle, and then push the two legs on the bottom down into the holes. Make sure it's all the way down. Then replace your air filter. Then replace the top of the air intake box and just slide those tabs back into the side. Then reclip the top of the air intake box down.

We hope this video helps you out. Brought to you by, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 8mm Socket

2002 - 2004  Ford  E250 Van
2002 - 2004  Ford  E350 Van
2002 - 2003  Ford  Explorer
2001 - 2008  Ford  Escape
2003 - 2004  Ford  F150 Truck
2001 - 2003  Ford  Explorer
2001 - 2005  Ford  Explorer Sport Trac
1998 - 2004  Ford  Mustang
2000 - 2006  Ford  Taurus
2001 - 2004  Ford  Escape
2003 - 2004  Ford  Expedition
2004 - 2011  Ford  Ranger
2003 - 2004  Lincoln  Navigator
1997 - 2004  Ford  E150 Van
1996 - 2000  Ford  Contour
2000 - 2005  Mercury  Sable
2001 - 2003  Mercury  Mountaineer
2002 - 2003  Mercury  Mountaineer
2005 - 2008  Mercury  Mariner
2000 - 2002  Lincoln  LS
2002 - 2002  Lincoln  Blackwood
1996 - 2000  Mercury  Mystique
1999 - 2002  Mercury  Cougar
2004 - 2004  Ford  F150 Heritage Truck
2002 - 2004  Ford  E350 Van Super Duty

95-11 Ford; 95-04 Lincoln; 95-07 Mazda; 96-07 Mercury Multifit EGR Vacuum Modulator

Ford Lincoln Mercury EGR Valve Vacuum Modulator Dorman OE Solutions

This part replaces:

  • Standard Motor Products VS63
  • Dorman 911-128
  • OE # F63Z9J459AA
  • Dorman OE Solutions 911-128
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