Menu

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

How to Replace Ignition Coil Pack 91-10 Ford Explorer

Share on:

How to Replace Ignition Coil Pack 91-10 Ford Explorer

Created on: 2010-10-06

Check out this 1A Auto video to learn how to replace the ignition coil on your 91-10 Ford Explorer 4.0L.

  1. step 1 :disconnect the battery
    • Use your 8 mm wrench to disconnect the negative battery cable.
  2. step 2 :Uninstall the ignition coil
    • Mark the spark plug wires so you know where they plug back in.
    • Twist and pull to remove the wires.
    • Unplug the wiring harness from the ignition coil
    • Unbolt the four 8 mm bolts and remove the coil.
  3. step 3 :Install the new ignition coil
    • Bolt in the four 8 mm bolts to install the new ignition coil
    • Plug the ignition coil into the wiring harness
    • Put the spark plug wires back in the same order they were in before, in accordance to your marks.
    • Reconnect the negative battery terminal with your 8 mm wrench

Tools needed for replacement

  • Materials, Fluids, and Supplies

    Marker / Writing Utensil

  • Ratchets & Related

    Ratchet

  • Screwdrivers & Related

    Flat Blade Screwdriver

  • Sockets - Metric

    8mm Socket

  • Wrenches - Metric

    8mm Wrench

Installation Video
Watch video

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

Hi. I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20 plus years' experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly; that's going to save you time and money. Thank you and enjoy the video.

In this video we're going to show you how to remove and then reinstall an ignition coil in this 1998 Explorer with a 4.0 liter V6 with the EFI. This is basically the same as quite a few trucks with that motor in it. The only tools you'll need are an 8 mm wrench or socket and ratchet and a flat-blade screwdriver.

Disconnect the negative battery cable with an 8 mm or 5/16 wrench. Okay, so on this motor the ignition coil is right here, right on top, really easy to get to. If I'm just replacing the coil what I like to do, and actually even if I'm replacing the coil and the wires you want to do one at a time. You don't want to just pull all the wires off and pull them all off the plugs and then it will be kind of a mystery of how to get them back on. What I like to do is I just number them front to back. I don't worry about which cylinder on the engine they are technically, but I just make a mark. There's one and I make two marks on that one and then I know the one without a mark is the third one. Same thing on the other side. One mark on the first one and two marks on the second one. Okay.

Now I can pull my plug bars off by squeezing on here and then twisting and then off. Okay and then you've got your harness connection here. Use a screwdriver pull up. You'll have to pull pretty hard and it comes right off. Then four 8-mm bolts. Okay, this first one over here has kind of a harness connection. So you want to make sure that when you put it back together you put that back on where you just remove those four bolts. Two bolts are in the back kind of blind but they're just right at the corner. Okay and once those bolts are off the coil comes right up and out.

Okay, so here's your original coil, new coil from 1A Auto. You can see the 1A Auto coil is exactly the same. It's going to go in there and it's going to connect up the same. Now on this vehicle since it's kind of a demonstration vehicle and this coil is actually working fine I'm just going to reinstall the original one. Reinstallation, pretty straightforward. I'm going to lift those up and out of the way. Okay. Just make sure everything is pretty clean right there. Coil goes right down into place. Get one of the bolts started and then I'll get them all started and then tighten them up.

Okay then you remember, on this one over here you've got this bracket that you want to put on. Okay, and when you tighten these you want them firm, but they don't have to be incredibly tight. Okay, and now we've marked our wires here so there's my two. There's my nothing, so here's my one. So, that was closest to the front. Push it on. Two is the second one, and no mark is the third. Okay, we'll actually plug in the power connection there. No mark on that one; that's probably three. Grab our two over here. One mark and two and we're all set.

We hope this 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:

    Materials, Fluids, and Supplies

  • Marker / Writing Utensil

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 8mm Socket

  • Wrenches - Metric

  • 8mm Wrench

1998 - 1998  Mazda  B3000 Truck
1995 - 1996  Mazda  B3000 Truck
1994 - 2000  Mazda  B4000 Truck
1999 - 2000  Mazda  B3000 Truck
1999 - 2000  Ford  Ranger
2001 - 2011  Ford  Ranger
1995 - 1998  Ford  Ranger
1993 - 1995  Ford  Taurus
1990 - 2000  Ford  Ranger
1989 - 1992  Ford  Taurus
1991 - 1994  Mazda  Navajo
1991 - 2000  Ford  Explorer
2001 - 2005  Ford  Explorer Sport Trac
1995 - 1997  Ford  Aerostar
1990 - 1997  Ford  Aerostar
2001 - 2005  Ford  Explorer
1997 - 2010  Ford  Explorer
1997 - 1997  Ford  E150 Van
1997 - 1997  Ford  E250 Van
1997 - 1997  Ford  F150 Truck
1998 - 2002  Mazda  626
2005 - 2010  Ford  Mustang
2007 - 2010  Ford  Explorer Sport Trac
1998 - 2010  Mercury  Mountaineer
2002 - 2010  Mercury  Mountaineer
2001 - 2009  Mazda  B4000 Truck

Fuel Pump Connector Issue Tips 1AAutocom

Fuel Pump Connector Issue Tips 1AAutocom

Learn a few tips about connecting a fuel pump adaptor in your GM vehicle in this 1A Auto video.

Search Videos
Go To Top

Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

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

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.

Loading...