Audi 80 TDI 1Z - hartes Motoraussetzen | Posts 16+

I would agree with you if it had still been the case after replacing the flywheel and clutch . It runs again like a new car .

There are things that simply shouldn't exist: how can broken clutch springs, which are supposed to 'brutally defend' the low-speed (LL) RPM (starting on a hill without giving it gas, etc.) in the VP engine, actually force it to drop so drastically...?

The idle speed control was also working hard. But when there was a difference of 5mg/h from cylinder to cylinder, it became difficult . Occasionally, the electronics managed to compensate for it for a short time. But this was rather rare.

I should also start responding more quickly, and I should tell you what it was .

So, it was resolved by disconnecting the speed sensor signal from the engine control unit!
I really struggled with that.


Thank you again for the competent assistance from everyone!!


Best regards.
Daniel.

Quote:

So, it was resolved by disconnecting the tachometer signal from the engine control unit! I really struggled with that...

The injection pump's quantity control valve is not properly adjusted.

Well, disconnecting it fixed the problem.


What could I have done with the pump to fix the problem? I also tried installing a different pump with a different number of operating hours, but that didn't make any difference...

Quote:

I also tried installing another pump with a different operating time, just for testing purposes, but it didn't make any difference...

And what do you think was the reason why it was for sale?

The issue of adjusting the quantity control (Mengenstellwerk) has been described often enough, and there are also technical articles available about the quantity control.
/content.php?c=8

Best regards, Rainer.

I took the pump out of my Passat that was a total loss, and that car didn't have the same problem... so it's quite strange.

I'll read this over. Best regards.

Hello,

I didn't want to start a new thread, so I'm posting here. I'm also experiencing misfires, completely irregularly and across all RPM ranges. I've already checked almost all the sensors. I've inspected and adjusted the fuel injection pump. Today, I wanted to check relay 109 and replace it, but to my surprise, I don't have one!???
Okay, here's my question: What does this part do, and why don't I have it? I always thought all TDI engines had it.
Which relays are responsible for controlling the motor? Thank you.

Hi,

Can anyone answer me? I'm stuck and don't know what to do. Dear people, please help me.
to investigate the cause! Thank you.