[Oil Pressure] Help me save my 04' 2.5T from being dead at 180,069 miles

[SuperHerman]

My initial reaction is you have failing oil-pan o-rings. The oil pressure sensor wouldn't even make my list.

After some thought, if you have no oil leaks, and it is not smoking like a bug fogger all the time, then you either didn't fill it correctly with oil or the oil is stuck in the PCV system which to be honest I don't know how 2 or 3 quarts would live in the system. The pressure would have it blowing out all of the seals. It would be smoking like mad.

Pull your spark plugs and post pics. Maybe hydrolock from oil causing the timing to jump?????

Need more information. Once you solve your oil disappearance - I would focus on the two codes.

If the motor was starved of oil, the engine is toast. You should see signs of this by draining the oil. You can drain it in a clean container if you want to re-use it and it is fresh.

Based on the video - it doesn't sound like the starter is struggling (sign of engine damage). Sounds like a fuel or timing issue.

As mentioned a compression test would be one of the first steps.

[OFoVo]

My initial reaction is you have failing oil-pan o-rings. The oil pressure sensor wouldn't even make my list.

After some thought, if you have no oil leaks, and it is not smoking like a bug fogger all the time, then you either didn't fill it correctly with oil or the oil is stuck in the PCV system which to be honest I don't know how 2 or 3 quarts would live in the system. The pressure would have it blowing out all of the seals. It would be smoking like mad.

Pull your spark plugs and post pics. Maybe hydrolock from oil causing the timing to jump?????

Need more information. Once you solve your oil disappearance - I would focus on the two codes.

If the motor was starved of oil, the engine is toast. You should see signs of this by draining the oil. You can drain it in a clean container if you want to re-use it and it is fresh.

Based on the video - it doesn't sound like the starter is struggling (sign of engine damage). Sounds like a fuel or timing issue.

As mentioned a compression test would be one of the first steps.

Yep, when I have time (possibly today) I'm going to do a compression test. I talked with my mechanic Mark (If any of you live in the DC metro area, he's one of the top Volvo/Saab mechanics on the east coast--can't recommend him enough), and he recommended I do a compression test, change the belt, swap in a new fuel filter, and check the fuel pump control module. I gave the fuel filter a peek the other day when shoveling snow, it might be the original, which is insane.

I agree with you on the oil pan and o rings, my hunch is that the entire PCV system is clogged all the way down to the oil pan. I really think the PCV system is at least partially the culprit, the tubes/lines are rock solid brittle. I'm going to try and take off the top one next to the oil filler and see if it's a carbon mess.

[OFoVo]

Shoot, I forgot that the new cheapie OBD 2 I have has Freeze Frames. I'm not going to lie, I have very little idea what most of these mean. Any obvious issues here?

I can tell at least that my fuel trim looks good to my eyes despite having a P2188 (engine running rich) secondary code. I don't know enough about timing to recognize if that SparkADV value is significant

[jonesg]

compression guage is $30 at any auto store.
That will tell you whether anything else matters.

[pbierre]

How much oil did you add at the service station?

Just because the dipstick comes out dry doesn't mean the oil pan is empty. It just means you're down to 5 liters or less.
If an engine spews out oil, it collects in the stone guard, and would be still dripping days later -- therefore, unless you had to add
6 liters of oil to see the level on the dipstick, I think you were just down a couple of liters -- the engine was being lubricated.

I can't read anything in your imgur files....it renders as a solid gray page.

Suggest you just type in your DTCs (P# and exact wording).