unrunder schüttelnder Leerlauf beim 1,9tdi pd 96kw avf | Posts 16+

Interesting question, I'll give it a try.

Here we go again.

Yesterday, I did some reading in this forum, and I came across the fuel temperature sensor as a possible cause. Because when the engine is at operating temperature, everything is fine.

Okay, so this morning I went to the car and looked for the sensor. I disconnected the connector and connected the measuring device to the sensor. Well, what can I say, no value is displayed. So I tried another measuring device, and still nothing. I tested several resistors as a check, and those are working fine. So, I'm concluding now that the donor is defective.
Okay, I've connected VAG-COM and I'm looking for the measuring block (MB) that displays the fuel temperature. According to Google, it should be MB 7, first column. I hope that's correct! It was showing 15°C there. Now, I started the engine, and the value increased. Now I'm not sure if the sensor is actually defective or if there's another issue. There are no error codes stored. Do you have any ideas?

Here's what else I noticed. While checking the sensors in the engine compartment, I accidentally forgot to plug the mass airflow sensor back in. I started the engine and waited for it to start misfiring. But nothing happened. It ran perfectly for the first 20 seconds, then it started having brief hesitations, etc. Then it dawned on me: "Oops, you forgot the plug." I turned off the engine, plugged the connector back in, cleared the error codes, and started the engine again. It ran smoothly, as it should. I logged the whole process. Perhaps there will be a statement about it.

Please provide the text you would like me to translate from German to English. I need the text to be able to translate it.

Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation.


Otherwise, I'll disconnect the sensor connector and check with VAG-COM to see if the value is still displayed in measuring block 7. If so, there must still be a sender for the fuel temperature gauge.

Furthermore, I'm still trying to log the stuttering issues. It's that darn demo effect. As if the car knows and always works exactly then.

Let's see what your opinions are on that.

P.S. What program do you use to view log files? Everything appears to be shifted or misaligned on my screen.

Regards,

T4Ronne

t4ronne wrote:

So, this morning I went to the car and looked for the sensor. I disconnected the connector and connected the measuring device to the sensor. Well, what can I say, no value is displayed. So I tried another measuring device, and still nothing. I measured several resistors for testing, and those both work fine. So, I'm concluding now that the donor is defective. Okay, I've plugged in the VAG-COM and I'm looking for the measurement block (MB) that corresponds to the fuel temperature. According to Google, it should be MB 7, first column. I hope that was correct!?

There's also a FAQ about log files here, which contains everything. . .

Quote:

It showed 15°C there. Now, start the engine, and the value increased. Now I don't know if the sensor is really defective or if there's another one. Is there no error code stored? Do you have any ideas?

In case of a sensor defect, a neighboring temperature is used as a replacement value, presumably the water temperature. AND there should be an error memory entry - at the latest if you start the engine with the connector unplugged (or turn on the ignition). The donor is defective only if it reappears after being deleted.

Hello,

I have here:

Okay, I'm ready. Please provide the German text you want me to translate.

Please save the data if there's any more instability at idle.

I guess you probably won't notice much, since there were hardly any deviations even during the recording. But I'm happy to be proven wrong.

Regarding log data processing, I've read the instructions and tried many different things, but I can't seem to get it right. I've tried Open Office and all the settings, but somehow the program keeps shifting the columns around randomly. Are there any other settings I need to adjust?

Hello,

Are you sure it's just a matter of attitude?
The AVF engine has an electric motor mount, and if that fails, the engine will no longer run smoothly.

Try unplugging it and see if anything changes.
From a front-facing perspective, it's located on the right side, directly next to the engine, and slightly lower.

Sure, here's the translation:

"MFG" is an abbreviation for "Mit freundlichen Grüßen," which translates to "Sincerely" or "Best regards" in English.

Hello,

I don't understand this right now. An electric motor mount? Is this about a 2001 Passat?
According to VW, there are only hydraulic bearings.
Could you please explain in more detail what you mean? I couldn't find anything about it.

Best regards,

*junk*


My Golf had a broken wire on a 4-pin connector located below the battery, which was really difficult to find because the wire had broken inside the connector itself.
"The engine control unit (ECU) was missing the DF terminal; when accelerating to full throttle, the ESP warning light illuminated. The error was noted, and it was recommended to read the data from the MSG (presumably another module), which, in turn, showed the aforementioned issue." Error displayed.

I had been dealing with this error for a little over two months, but I fixed it today.

The fact is, when he didn't receive the signal, he ran very calmly during the warm-up phase.
Well, again with the signal, it vibrates while idling during the warm-up phase just like before .