The twist angle is set to +2 degrees. Here's another video from this morning. It's better, but not perfect. It seems to be some kind of digital speed reduction. What could that be?
Yes, I've noticed that too, but the tolerance that VCDS is reporting is +/- 100, not +/- 60. Where did you get the information that +/- 60 is the tolerance?
If the high negative values generally indicate a fuel shortage, how should the positive values be interpreted?
It doesn't make sense to me in terms of a logical cause-and-effect relationship.
I would say that fits the bill. The BLS has a 1.5x PDE. They clock faster.
The tolerance is +/- 100 in the control unit. An error is only logged if this value is exceeded.
Unfortunately, problems with the injectors become noticeable in practice even at much lower values. In such cases, the error memory will not contain any specific information.
If the positive values are too high, the injector is faulty. It then operates too slowly because it is internally clogged. This can happen, for example, when using low-quality diesel fuel.
The MWB (presumably a measurement or control unit) reflects the switching times of the solenoid valve in the PDE (presumably a common rail injection system) before the start of injection.
Here's more information if you're interested:/viewtopic.php?t=26242&highlight=magnetventil
Passat Variant BGW 2005
2024 Dacia Duster blue dci 115
Okay, I'd like to provide an update now. I've now driven just under 2000 kilometers.
Last week, we experienced some rather unusual temperatures, around 10°C. There were absolutely no starting problems during that time.
Over the next few days, it will get a bit colder, around 3°C.
At these temperatures, he had always resisted before.
Since the issue seems to be centered around a temperature of approximately 5°C (problem with cold starts, no problem with warm starts), I suspect the glow plug system.
Therefore, I've now measured to see if the glow plugs are actually receiving voltage. Yes, there is voltage present.
Furthermore, I received the suggestion about the coolant temperature sensor here.
I removed the plug and checked if a default value was being set in the module configuration blocks (MCBs). Answer: No, it uses the temperature reading from the fuel temperature sensor. - The car wasn't completely cold yet.
So, I also disconnected the fuel temperature sensor. Then, it registered -5.7°C as the coolant temperature and +37°C as the fuel temperature. It doesn't really make sense to me.
The preheating time was always 1.61 seconds, regardless of the above-mentioned conditions. Whether the plugs were inserted or not.
It would always turn on the radiator fans when the ignition was turned on.
Is it normal that it only pre-glows for 1.61 seconds, even when the plug is pulled and the temperature is -5.7°C? Could that be the problem?
I don't understand the question. What am I supposed to log here? When I turn on the ignition, it immediately starts glowing. I'm not going to be able to get to the MSG (Main Security Gate) anytime soon, and definitely not to the MWB (Main Warehouse Building) to start a log.
These are the two that I worked on most recently. Due to the current cold weather, we have even more information available now.
Slightly rough running in the first few seconds after starting, and loud knocking until it warms up.
I've now also looked at the coolant temperature sensor, which was reading a surprisingly high 0.9°C this morning, even though the actual temperature this morning was -4.5°C. I can't imagine that the coolant would stay warm for that long.
The Difi is still old, and I think you can replace it again, but probably not, because the car has always been regularly serviced.---
Make sure to check the switching times, as they are still negative. Also, pay attention to the condition of the cable ends. If they were forced out with a small screwdriver by the workshop, cracks will quickly appear.
Do you have the ability to measure the pressure of the tandem pump?
I just took two more photos of the two BLS vehicles in the yard.
We have -6°C.
The shift time variations are also negative in the Golf. However, this one starts excellently and doesn't rattle as much.
Can someone explain this to me with these deviations, or do you have a link with more information about this? I haven't fully grasped it yet.
The KM temperatures were different: 0.9°C for the Audi and -2.7°C for the VW.
I am swapping the DFI and the coolant temperature sensor. I don't really believe that's what it is, though.
@Roger: To replace the Difi, I don't need to disconnect any hoses. I just need to unscrew the cover. I replaced the clamps with fuel hose clamps anyway.
Possible causes for knocking sounds, assuming similar mechanical conditions and wear, include faulty glow plugs and a defective coolant temperature sensor. Note that there are separate data blocks for each of the two separate coolant sensors! Once in the engine control unit and once in the instrument cluster.
Looking only at the instrument cluster, you can skip checking it, as this value is irrelevant to the engine control unit.
The start of fuel injection during cold starts for both engines, at the same engine temperature, should be compared.
Even considering the different engine control unit software. With KOBD2Check, you can check if the software is up-to-date, and if it contains at least one EU5 engine, you can see if it has been modified (CVC-Check).
Thanks for the information. I've ordered the two-pin connector for the MSG for now. Apparently, there's also a four-pin connector available. At least, that's what relevant parts suppliers offer.
VW, however, says that there is only one version of this car.
As I see it, I would first need to purchase the software to check if the update is current and to see if it has been modified or "tuned."
I'm going to set that aside for now, as the probability that it's been modified is very low.
Regarding the current software status:
It was probably maintained by an independent workshop throughout its life, so it's likely outdated. But why should that be the cause? He didn't exhibit the behavior you'd expect from someone who just came off the assembly line.
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