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1A Auto Lifetime Warranty
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Pre-disconnected. We're going to come right over here to this. Can see there's a little green tab. On the other side, there's a little tab. You push that and you can draw this right off. At this point, we're going to move along to loosening this clamp. And then this one right here using an 8-millimeter or a flathead. Take a peek in here. Make sure you don't have any crud. Looks good. So now we have a clear view of the coils, you can just go down the line and start disconnecting them by squeezing this little tab and then drawing this up. Now, I'm going to use a 7-millimeter swivel. I'm going to take out the mounting bolt. It's hard to get it on there and stay. That bolt out of there. Grab your coil, lift straight up. Make sure it comes with all the boot. Now that we have that out, just take a peek at the boot. Make sure it isn't torn and missing a piece and it's down inside there. If it looks good, you can continue.
Grab that coil right on here. That fits beautifully. I'm just going to snug this up. These coils, you want them to be nice and tight so that they can't spin around. If it moves a little bit like this, that's okay. I'm just going to give it just a teeny bit more. But that's it. Last thing I want to do is break this bolt off. Go ahead and get this attached. Make sure that it's locked in. That feels good. Now, I'm going to do the same to all eight cylinders. Let's get this air intake back on. Tighten up those clamps. Nice.
So, now it's going to be time to try starting the vehicle. When we do that, we want to pay special attention to up here and make sure nothing funny happens. If you see any check engine light, which would be located right up here, we know we're going to turn it right off and check to see what's going on. It's going to run a little rough at first and then it'll smoothen out. I'm looking up here. I see nothing, an exception of just it telling me that I'm not buckled up.
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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.
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