Problem?

Hi,

Something absolutely strange happened to me today.

I stopped briefly to pick up a friend. The engine (AFN) is warm, and I started it without letting it idle. The RPM immediately jumps to approximately 3000 RPM and then drops back to idle speed. I was surprised, so I tried it about three more times, and each time I got the same result. Then I just drove off.
It was actually all quite normal. I was approaching a traffic light, I took my foot off the gas, and I wanted to let the car roll to the traffic light, but suddenly the engine stopped.

After that, I quickly restarted the engine without it revving up, and I drove backward into a driveway.
Then I disconnected the auxiliary control unit and wanted to continue driving in the standard configuration, but the engine immediately stalled again after starting . I started it again and drove to my friend's place, where I left the Golf there for now.

That's all for this morning.
Around 6 PM, I drove home again with the auxiliary control unit installed, and there were no problems.

I'm naturally wondering what that could have been.
He had the nozzles replaced just about 4 weeks ago.
The only thing I can imagine is that, due to my curiosity, I might have put some biodiesel in my tank during my last refueling.

The engine currently has a mileage of approximately 135,000 km.

Does anyone have any ideas?

Greetings.
Thomas.

Hi Thomas,

Look over there.

/viewtopic.php?t=15

You should definitely check the parking brake lever and its connection (possibly due to corrosion?).
Mine has approximately 8 ohms of resistance to ground.

Otherwise: Read (or have read) the error memory.

Hi,

Thank you for the quick response.
I'll take a look at it tomorrow in daylight.
There should be a multimeter lying around somewhere.

Having the error memory read is not possible.
I completely avoid all authorized repair shops.

I have a laptop, so I'll see if I can get my hands on a VAG-COM or something similar. There have been plenty of guides and instructions available here before.

Aber das ist zumindest mal ein Anhaltspunkt, wo ich mit der Suche beginnen kann. Thank you.

Of course, I am open to and grateful for further suggestions.

Regards,
Thomas.