That was my thinking, too, and why I tried the free troubleshooting step of swapping coil packs around. It seems the previous owner of my LR3 had 3 coil packs replaced. (On my vehicle the new ones have the same connector but the visible plastic lump is smaller than the original so there was some kind of design change.) I experienced 3 more failures of original (larger) coil packs and replaced the last 2 originals proactively.

I think I'll replace all 8 the next time they start to fail. I'm tempted to remove the plastic decor cover since I am sure it traps engine heat which may cook electronics directly underneath. Has anyone ever removed the plastic cover long term and are there any ill effects? Water splashing / pooling during rain?

-Rob

 

I made a diagram based on the LR3 information in the Firing Order And Cylinder Numbers For Land Rover Engines video referenced by cmb6s in case some people don't have the time or bandwidth to use the video.

 

So... It's fixed now. Ended up being #3 coil. I was using a diagram I found online that was not accurate. Very frustrating since that's where I started my troubleshooting!

But, thanks to this community of helpful folks, I was able to back track to the correct path before spending more time and money racing down a rabbit hole to oblivion.

A HUGE thanks to the community as a whole!

 

That's awesome, huge testament to the differential diagnosis approach to the forums.. and the fact that I think we all realized at the same time that the cylinder IDs are funky on these things haha.

 

I know I'm replying to a three year old thread, but I just wanted to say thank you for saving me a lot of time figuring this one out.

I was sitting at a stoplight and James (my lr3) suddenly started acting like something you might find in a woman's nightstand drawer that takes batteries. When I left the light he went into limp mode and threw p0300, p0303, and p0307. I had a feeling it was a coil, and couldn't believe it would be two at the exact same time. So Google brought me to this thread. To confirm my suspicions, I swapped 3 to 1, and then got p0300 and p0301. So I replaced that coil and all is well. Interestingly, last night as I was driving I kept smelling burning popcorn. I shrugged it off thinking it was one of my passengers. Now I'm pretty sure it was my #3 coil pack letting out its smoke.

Anyway, thanks again guys!