defsix

You'd be correct. Oil pump is wet belt driven.

Get your own one refurbished. It will save in having to have it recoded to your car. Downside is, your car will be without a gearbox for 1 to 2 weeks.

99% from what I've read, this is the issue.

You're only replacing sensors on the MCU Electronic side. Unless you have a different issue. No need to replace the complete MCU unnecessarily. The replacements from VAG still have the same sensor, so you could be back to square one after 10k miles again.

Have a look at the other posts in this forum. There's plenty of choice 😉. Best to rebuild MCU, new oil & filter. Done.

Did you try rebooting the headunit?

So when you press OFF , nothing happens?

What's happens when you press the off button? There should be Automatic or Manual.

Ah, a lot of faults like this seem to appear when there is a battery issue. And with this nice weather we're having it might have made it worse. But, yours is still fairly new.

How old is your Battery?

I haven't changed anything on the new engine, the new engine came complete. Just had to swap the loom over to match the extra sensor on the DPF and a few coolant pipes. My mechanic hadn't heard of the solenoid that failed for adjusting the oil pressure.

Live data might help, need to get the new engine in first ! My mechanic, a VW/Audi trained, independent had never even heard of this solenoid before I pointed it out to him. I'll update as I got more news.

There were no fault codes at all, that's the crazy thing. When we started investigating the issue, the first this we check was this Solenoid, this was because I'd mentioned it to the mechanic as being a preventative thing to unplug from looking at other engines that have suffered from oil starvation because the pump runs at low pressure. It wasn't going to be my first check, I had assumed the oil pickup was clogged, oil pump had failed etc. When we undid the bolt the coil of the solenoid cracked off into my hand, I barley pulled it. The needle for the valve was lose inside and we pulled this out, the body of the poston itself is stuck for good inside the chamber, which is part of the block directly in fron to the oil pump, ie. very hard to remove 😁. The could itself has 2 pieces that clamp the pin, they should move freely as the coil is energised. They were jammed. After a bit of wiggling with a screwdriver, they became lose and fell out. My understanding is the coil could have been energised or not , but would not move the piston. Without live data on the pressure values it's hard to say for certain what was happening. I would have assumed there are 2 points for measuring pressure, but if so, and if there was a blockage in an oil chamber, would this not cause an error also? It's probably going to remain a mystery 😭 Failure sequence was 2, this bearing had disintegrated on one side and had spun the other side, scoring the crank. 1 was reddened, 3 less so, 4 looked ok. If anyone had any other suggestions, ideas or theories, i'd be curious to hear. When I get the new engine in, we're going to run a few tests with and without this solenoid plugged in. Pressure readings and live data.

No abnormal noises beforehand. Car was driven 30KM briskly with no issues. The following day after 15KM , the knocking started.

Looks like it, behind the Air Con pump. It regulated the oil flow directly into the oil pump.

A few more pics. Today we swapped the engine accessories over, different cooling system. The diner engine had different gearbox cooling setup. That's sorted now. Wiring loom had 2 different plugs, DPF sensors were missing on the old engine. Flywheel was wrong. Mine is gone, but was lucky to get the engine with the fly wheel, but alas, wrong part number. New one on the way. Turbo rebuild next week. Will update later on! Just to add, oil pump and wet belt were checked and appeared to be working fine.

Looks like there was some coolant leak in the past. Did a deep teardown of the engine since. The block was rusty in a places, not sure from what. Removing the coolant system has show a few weak points where rust has got between the seals and the plastic connectors. The mechanic and I both believe this issue was caused by oil starvation, caused by this failed solenoid. Cylinder 2 failed first, spun bearing. 1 & 3 were reddened. Scoring on the crank. Oil pickup was fine, it caught the bearing debris though.

Day 30 something.. Update in this small issue. I believe this is also in relation to Oil Pump Solenoid Thread. We are on the middle of stripping the engine down, anad looking for possible causes. Today we found the oil pump solenoid was broken and the solenoid was also jammed. Stuck open or stuck closed were not quite sure. The part that is in the block is rusted solid. The was rust built up around it , from above, and weaped into the solenoid body. Hopefully the pictures will explain it better. If this was the point of failure, theoretically the oil was running low pressure all the time. As it is now in the block, my mechanic doesn't know how he could get it out easily.

GSF I'd assume

120K Miles. Skoda online service history, appears to be main dealer serviced on long intervals. Oil pickup is going to be the first look. All going to plan, I hope to do a teardown and see what was the point of failure.

Have a look here for my initial issues and the outcome.

My Engine is gone. Turbo appears ok. Minor play. Nothing to suggest oil starvation to the turbo. We will investigate further as the job proceeds.

I've only looked on the Diesel side. But the video I linked to in my first post was a Mercedes AMG Petrol.

There's no definite proof as of yet. But the big end bearing has failed at 120K Miles which sounds very early. Dealer serviced up until I purchased, then serviced every 6k Miles then. My mechanic believes it's also some kind of starvation too.

I am currently in the middle of replacing my engine after an oil starvation. So everything is completely accessible 😁. I'm definitely considering this option. I've heard of this oil issues with several of the VAG group cars. I'd I'm not mistaken it was as issue with this 3.0TDI A7 Saving Salvage A7