Menu

1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles

How to Replace Ignition Coil 02-05 Mercury Mountaineer 4.6L V8

Share on:
  1. step : Removing the Engine Cover (0:33)
    • Remove the two 11mm nuts from the engine cover
    • Lift the engine cover up
    • Disconnect the hose on the back of the cover
  2. step : Removing the Ignition Coil (0:59)
    • If needed, loosen the air intake hose clamp and remove the air intake hose to access coils 6 and 7
    • Remove the 7mm bolt from the ignition coil
    • Disconnect the ignition coil harness
    • Lift the ignition coil up and out
    • Remove the boot with pliers if it will not pull out
  3. step : Installing the Ignition Coil (2:15)
    • Insert the ignition coil into place
    • Tighten the 7mm bolt to the ignition coil
    • Connect the ignition coil harness
    • Repeat the process for any other coils
  4. step : Reinstalling the Engine Cover (2:56)
    • Clamp the hose to the engine cover
    • Insert the engine cover into place
    • Tighten the two 11mm bolts to the engine cover

Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.

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 1AAuto.com. Thanks.

In this video, we're going to show you how to replace the ignition coil on this 2003 Mercury Mountaineer with the 4.6L V8 engine. The items you'll need for this include a new ignition coil from 1AAuto.com, and 7mm and 11mm socket with a ratchet.

Start off by removing these two 11mm nuts. We'll fast-forward as Mike does that. Now lift the cover up and you'll feel it release from the bracket. Pull it forward and then just open up this clip and pull the hose free and your cover's free.

The 4.6L V8 has a coil for each cylinder. On this side pretty easy to get to: one, two, three and four. Over here on this side you can pretty easily see that one that's here in the back. If you wanted to get to either one of these two here, you remove this screw and pull this from there, and you can pull these hoses off. Then the front one is right in here. Now just remove the 7mm bolt that holds it in place. Push the tab on the harness and disconnect it. Then pull the ignition coil up, bend it to the side, and then lift it up and out. The boot may stay behind if your ignition coil is in rough shape, so use a pair of pliers, reach in and pull the bottom of the coil up and out.

On the left is the old ignition coil; 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 ignition coil and feed it down into place, and back underneath your fuel rail. Once you've got it lined up replace that 7mm bolt and just start it by hand, and then tighten it up with your socket and ratchet. Reconnect the harness and then repeat for any of the other coils that you might want to replace.

Once you've replaced whatever one you want to replace, put the cover back in place. Put the hose back on the back and clip it in place. Line up the two bolts in the front. Once you do that you can push the clips down there in the back, then put those two 11mm nuts back in place and tighten them up.

We hope this video helps you out. Brought to you by www.1AAuto.com, 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

  • 7mm Socket
  • 11mm Socket

1997 - 2003  Ford  E250 Van
2000 - 2003  Ford  E250 Van
1997 - 2003  Ford  E350 Van
2000 - 2004  Ford  Expedition
2002 - 2005  Ford  Explorer
1999 - 2004  Ford  Mustang
1998 - 2011  Mercury  Grand Marquis
2002 - 2005  Mercury  Mountaineer
1998 - 1998  Lincoln  Navigator
1998 - 2011  Lincoln  Town Car
1997 - 1999  Ford  Expedition
1999 - 1999  Lincoln  Navigator
1999 - 2003  Ford  F450 Truck
2000 - 2008  Ford  F150 Truck
2000 - 2003  Ford  E150 Van
1997 - 2003  Ford  E150 Van
1999 - 2003  Ford  F550 Truck
1998 - 2005  Ford  Crown Victoria
2006 - 2011  Ford  Crown Victoria
2000 - 2005  Ford  Excursion
1997 - 2003  Ford  F150 Truck
2004 - 2004  Ford  F150 Heritage Truck
1999 - 2004  Ford  F250 Super Duty Truck
1997 - 1999  Ford  F250 Light Duty Truck
1999 - 2004  Ford  F350 Super Duty Truck
2004 - 2014  Ford  E150 Van
2004 - 2014  Ford  E250 Van
2004 - 2014  Ford  E350 Van Super Duty
2004 - 2005  Ford  E350 Van
1999 - 2003  Ford  E350 Van Super Duty

1997-08 Ford Lincoln Mercury Multifit Ignition Coil (SET of 8)

Ford Lincoln Mercury 8 Piece Ignition Coil Set TRQ

This part replaces:

  • TRQ ICA61510

Part Details

  • Set Quantity: 8 Piece
How to Diagnose a Car Wheel Scraping Noise: Brakes or Dust Shield?

How to Diagnose a Car Wheel Scraping Noise: Brakes or Dust Shield?

If you hear scraping noises while rolling, it could be your brakes, or just a bent heat shield. Watch this video to learn how to spot the difference!

Search Videos
Go To Top


Same Day Shipping

Orders ship same day when ordered by 2pm ET. Need your part faster? Choose expedited shipping at checkout.


Guaranteed To Fit

Providing you the highest quality, direct fit replacement auto parts enforced to the strictest product standards.


USA Customer Support

Exceeding customers' expectations every day, our team of passionate auto enthusiasts are here to help.


Instructional Video Library

Thousands of how-to auto repair videos specific to year, make and model guide you step-by-step through your repair.

Loading...