Is it just me or has this forum been down more often that it's been up recently? I guess I should hurry up and update while I have this oppo then.
So it seems VCDS was right. There was nothing wrong with my CPS. Also, I apologize for using the acronym CPS. Apparently CKP is the preferred acronym on the internets so that there is no confusion with the CAMshaft position sensor.
There was about a quarter cup of oil that drained out of my charge pipe when I removed it. Oil, when it's in smoke form, goes wherever it wants I guess. The TB was remarkably clean. But I cleaned it some more anyway using CRC's TB and carb cleaner. The hardest part of this procedure was removing the TB hose. It's a 2-piece jobby. It's a band clamp that threads through a ring sleeve that's crimped onto the hose. It's ridiculously difficult to remove, even maximally loosened. I needed 3 pick tools. Also. Be super super careful about how much force you use to remove this hose. Your dipstick holder, IAT, and TB connector are all very fragile and right in the same vicinity. My TB connector was a casualty.
Fortunately, it was just the connector, so i crazy glued it back together. But it broken again as I re-installed the radiator fans that I removed to make room. I have it duct taped together at this point.
With the charge pipe removed, there is enough room to remove the CKP without having to remove your oil filter. The 6mm hex bolt holding the bracket for both the CKP and knock sensor was seized. I hit it with some Liquid Wrench and let it sit overnight. I came back at it in the morning with a T40 t-handle wrench and it finally relented. The Pelican guide suggests that the CKP pops right out after removing the 5mm hex holding it in. It does not. I needed to grab it with channel locking pliers to get it out.
I was unable to clean the MAP sensor. One guess as to why. Yup. The two philips head screws were completely rusted. I hit it with some Liquid Wrench and let it sit overnight. No difference. With the charge pipe removed, I was able to Dremel a slot into the screw. I then proceeded to torque the heads of both screws completely off. Now, if I want to clean or replace my MAP sensor, I will have to drill these two screws out. Since I'm not sure what size screw this is, I decided to leave it be for now. It's unlikely that a bad MAP sensor would produce a no start condition. I was only cleaning it since I was in the area, and it was a good oppo.
So with TB cleaned and new CKP? Still no start.
So a thought occurred to me. I pulled the coilpack loom, the coilpacks, and the spark plugs. I then inverted the loom and reinstalled the coil packs onto the inverted loom. I installed the spark plugs onto the inverted coilpacks. That way, I could check for spark from within the cabin while trying to start the car. I did this test at night for maximum visibility. All four spark plugs are working. That means the entire ignition system is fine: battery, starter, loom, coil packs, and spark plugs.
I think I now need to investigate the fuel supply. Possible culprits are HPFP, LPFP, fuel pump relay, fuel filter, and injectors . It's not likely to be the injectors since it's unlikely that all four would fail simultaneously. It's not likely to be the fuel filter since I changed it back in the summer. I ordered a used HPFP which should arrive after Christmas. So I have some down time to think and to try stuff.
Here's a snapshot of my 103, 106, and 230 MBs. This is with the engine off because, like I said, the car will not start. Still, there seems to be a rather large discrepancy between requested and actual, no?
There are two things that bug me:
1. There have been NO DTCs concerning fuel supply issues. Are any of these parts that are likely to die suddenly while driving?
2. Isn't it peculiar that it happened immediately after my turbo swap attempt? I mean, suspecting the CKP seemed reasonable since it controls spark and the old one was indeed slightly covered with oil when I replaced it. But would a blown turbo cause a fuel pump to fail? That seems harder to believe.
Like I said. I'll have a few days to ponder things, so I'd appreciate any feedback I get on my dilemma. Provided, of course, that the forum doesn't go down again and you're able to read this at all.