2L CR Block EA288 | Posts 24+

Does it also specify which tool is needed to open this bleed screw?
I couldn't find anything about that...

Sorry, Roger, I just saw your message now about the tools.
That's just a big nut, nothing more.
It's solved in a dumber way than it was in the 3BG.
haithamina

Ah, thank you!

To complement this:
The photo above shows a view from below into the engine compartment. You can see a disconnected connector for the temperature sensor. In the lower part of the image, you can see the fan and the front of the vehicle.
When changing the oil filter, you first need to unscrew the inner screw of the oil filter cover (using a wrench). This will release a significant amount of oil (the entire contents of the oil filter housing), which hopefully lands in the prepared bucket placed between the fan, the air intake hose, and the engine block.
Only then can the oil filter cover (using a large wrench) be unscrewed, and the leaking oil filter can be carefully lowered.
Attached below are two more pictures.
haithamina

Hi there,
There is a recall campaign (ID: 23S3 S) dated February 4, 2016, which involves reprogramming the engine control unit to address crystal formation in the coolant system.
"That's very unfunny; Volkswagen explicitly advertises that the new LLK [likely referring to a cooling system component] and low-temperature water circuit are designed to prevent exactly that!"
I'm curious to see how they plan to handle the software aspect. Does anyone have any information or an idea about that?
Is it really that simple to increase the operating temperature of the LLT (perhaps in winter)? So far, it has actually been consistently 3-5°C higher than the ambient temperature, even in summer.
haithamina

Hello,

The operation of the intercooling system in the EA288 engine is described in SSP 514: Coolant circuit for intercooling (low-temperature circuit), control of intercooler temperature.
The control parameter for the closed-loop system is the intake air temperature after the intercooler.

The intercooler pump V188 is controlled by the engine control unit (ECU) as needed, and according to current service information (SSP), it does not operate at all when the charge air temperature is below the target value.
If ice formation were to occur in the low-temperature coolant (LLC) and under these environmental conditions, it could be relatively easily resolved by controlling the V188 valve.
The engine will then take a little longer to warm up, but the intake air won't get "too cold."

Best regards, Rainer.

Okay.
Okay, so basically as expected. Let's see what I notice after the update (if they actually push it out to my device).
Am I seeing that on the car scan?
haithamina

haithamina wrote:

Do I see that during the car scan?

Yes, the software version will be updated.

Quote:

Therefore, if ice formation is possible in the low-temperature coolant and under these environmental conditions...

Hello,

The problem isn't as theoretical as one might think.

We've had three vehicles in the past few weeks that wouldn't start when it was freezing (approximately -8° to +3° Celsius). All of them exhibited significant condensation in the coolant system, and some also had condensation in the combustion chamber.

Hello, this was also reported in the M Talk forum - it's having trouble starting or not starting at all, and apparently there's water in the combustion chamber.

@bloesch
How did they diagnose the water in the combustion chamber? Did they use an endoscope? That seems quite complicated, especially in general and even more so with the EA288! How do you access it to work on it?
haithamina

PS: Basically, this must have also existed in the EA189 engine, right? Has this ever been an issue with those engines?

Quote:

Wie hat ihr das Wasser im Brennraum diagnostiziert? Endoscope?

Yes, exactly. In cases like these "failures," there is often a "reporting requirement before repair." When you report the issue, the error codes are also sent (in this case: starter motor mechanically blocked/defective). Then, the manufacturer usually or sometimes provides guidance in the right direction.

If multiple people report the same problem, eventually a Technical Problem Investigation (TPI) or, as in this case, a field action will be initiated.

I haven't had to do any DIY repairs for a few years now; but since the introduction of EU5/6 regulations, things have become a bit more complicated.

Okay.
"Starter motor mechanically blocked!" This is likely due to some water droplets flowing directly from the intercooler (LLK) into the cylinder head (ZK)...
Great system! This is really frustrating!
haithamina

Hi there.
In the M Talk forum, the first reported case of connecting rod damage on a 1.6 TDI engine was attributed to condensation. It seems there's a problem with this particular engine type that's waiting to happen...
TurboGate!
haithamina

It's sad, but interesting to know the circumstances in which that happened. I suspect it occurred during short-distance travel or city driving, because a sufficient amount of water must have accumulated first.

"

Quote:

"Starter motor mechanically blocked"! This means there are some droplets of water flowing directly from the coolant reservoir

into the intake manifold... }"

Hmm, I'm just wondering how so much condensed water can be pulled out of the low-temperature coolant during the initial startup process and with such a relatively low air velocity, to the point where it blocks the starter motor.

The intercooler is directly mounted in the intake manifold on the cylinder head. I'd like to see a real-life example of this design; so far, I only know about the SSP 514.