check your wire looms for tears in the insulation. this could be causing random ground outs. i had this issue with the CKPS and Camshaft Position sensor. turned out the wires had come loose and rested against the exhaust manifold and melted a bit. fixed this and my misfire and other codes went away.

 

Replace your fuel purge valve with the Hyundai brand one
perform a smoke test on your intake for vacuum leaks
do the pcv oil separator mod

 

Thanks Redwhitekat. Can anyone point me to how to perform the cigar smoke test? I found this: https://landroverforums.com/forum/di...s-cigar-54235/ but the original poster deleted all his work. I wonder why he did that? Any way, I didn't see another how-to post.

I will the PVC oil separator mod next.

Thanks!

-Burwell

 

Thanks Jastutte. I will go over the harnesses this afternoon, CSI-style will a flashlight and up close.

 

I checked the wiring harness yesterday (7/31) and didn't find any tears, melted areas or bare wires. I will clean the connectors at the MAF today.

The purge valve will be in this weekend and I will get it swapped.

Does anyone have a link to a how-to or can describe how the smoke test is performed?

 

To the OP, can you view live data? The different reading from the O2 sensors and MAF? Do they correspond with throttle input or just stay at a constant reading at all times? Looks like the ecu isn’t adapting anything from the codes that continue to arise.

 

Yes, I can view the readings live. I will post screen shots. However, I will be ut of town until Sunday, but will post them when I return. Thanks!

 

Just thinking out loud but I've never seen codes refer to drive cycles. Could OP be reading readiness not actual codes?

The top of his screen of codes also says lr3 lr4 not discovery. Is that normal for the device he's using

 

Great eye there Ben. Also doesn’t show the code “state” hard fault/intermittent. But does say the ecu(motronic 5.2.1) but also shows Lr3/4

 

Update 8/5

Thanks Ben and Nosugar0carbs. When I go into my iLand ap on my phone, the first tile in the upper left hand corner is the Discovery | LR3 | LR4 tile - which also the only vehicle diagnosis ap I bought. Once that tile is selected, it goes into a dropdown sort of menu where one selects: Discovery, Discovery II, Lr3 or LR4. I am selecting the Discovery II option.

I think what you are seeing at the top of my screen shot is just the acknowledgement that I am in that section, but I am selecting the Discovery II.

I wasn't able to drive the 2004 Discovery 2 yesterday due to the weather, so, I couldn't get live data charts to post here yet. Also, the new purge valve is coming in today and I will get that installed.

Thanks again for all the help!