Lupo AMF 1,4 TDI trotz Chip keine Leistung | Posts 32+

15-04-2012, 21:31 Subject:

MFA *grins* that's a Lupo, I'm glad it has a clock

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16-04-2012, 19:55 Subject:

Nothing noticeable? I had it chipped today, but I'm still not feeling any "improvement" in performance. I'm going to run some logs now. Which data logs should I post?

16-04-2012, 20:51 Subject:

Here are the logs.

16-04-2012, 21:14 Subject:

You probably have a problem with your fuel injection system (PDEs, pump, wiring harness). It's pointless to modify the chip software, as that won't make the engine deliver more fuel either.
That's something the tuner should also know.
Sometimes it takes a while for someone to carefully consider your problem. In the meantime, you can also browse through this forum, for example, under the "Fuel Injection Pump" section.
hg
Herbert.

16-04-2012, 21:22 Subject:

"I've learned quite a bit about the "Pumpe Düse" system thanks to some users here. However, based on the logs, I can't determine whether the issue is related to the diesel pressure, the injectors (PDEs), or something else entirely. That's why I'm asking here, and I would be very grateful for any help or ideas. I replaced the return hose to the fuel filter with a transparent one to see if there were any bubbles or foam in the return flow, but I didn't see anything unusual. I'm not sure which potential causes this has ruled out, but I simply lack the experience to know."

16-04-2012, 21:27 Subject:

Take it easy. Rome wasn't built in a day.
hg
Herbert.

16-04-2012, 21:59 Subject:

Where can I get a pressure gauge for the tandem pump? And what kind of connection does it have?

17-04-2012, 21:50 Subject:

Hi,
I cannot assess the values with the engine that has been modified with a chip.
There is nothing unusual about the serial values, the status of the solenoid valves appears normal, and the opening times are also normal.
Have you checked if the engine is mechanically sound (compression, camshaft, valve lifters)?
hg
Herbert.

19-04-2012, 17:48 Subject:

Yes, that should all be fine. What's strange is that it starts to pull, but then it seems to stop around 2500 rpm...

19-04-2012, 18:59 Subject:

Why aren't you doing what I wrote?

Tobi12345 · 19-04-2012, 22:25 Subject:

"There are no air bubbles in the return line, and the pump pressure fluctuates rapidly between 6 and 8 bar. Should I do anything else?"

19-04-2012, 22:30 Subject:

Please measure the fuel pressure at over 2500 rpm...

20-04-2012, 13:17 Subject:

Should I connect the test lead to the tandem pump?