N75 valve issue

[Tatersalad]

Cleared codes, unplugged the N75 and N18, read codes again and I get the exact same codes. So whether they are plugged in or not doesn't matter ...........

[Martynas26]

U got original cable or cheap ebay? u say what u check one cable and its got 12v. I know what somehow u can check ground aswell

[Martynas26]

Try another n75 or n18 from the car in which they work ok. But i think is wiring loom or ground or ecu....

[Tatersalad]

I got vcds lite with a vag kkl cable from ebay.
yeah the red/white wire from the plug of the N75 has 12V

[Tatersalad]

Update - took the ECU out and cleaned all contacts. This made a HUGE improvement. No warning codes anymore (apart from ABS databus controller error) The car runs a LOT better and no limp mode anymore after 10 minutes.

Even though there is a lot more power, the car struggles to give it's full power especially above 3000/3500 rpm.

without fault codes this might be difficult to find....

[abby1]

which ecu you cleaned where from

[Martynas26]

Glad to know you fix that electricgremlin.
Now whensensors works you can diagnose your low power. Good luck

[Tatersalad]

The ECU in the engine bay near the windscreen, under the scuttle panel in the watertight box

[Tatersalad]

Glad to know you fix that electricgremlin.
Now whensensors works you can diagnose your low power. Good luck

How do I diagnose that? Live data via vcds?

[Tatersalad]

Run test today.
MAF output was specified at around 900. The actual output never came above 650