Faulty bosch 0261200284 / vw 025906022d digifant i df1

[R0B]

Im pretty sure this fella can repair T3 ECUs. https://t2five.com/ Might be worth contacting him.

[Aidan]

Hi

I believe I also have an issue with the exact model described here. Most obvious ymptoms are that the Fuel pump & idle stabliser control valve do not initialise/prime before cranking the engine.

Im also looking for a replacement ECU and/or one diagnose

Thanks, Rich

check the relays are switching properly (above the coil) faulty 12v connection from alternator or from the electrical box left side of engine bay and check the idle switch on throttle body is switching correctly
 

[silverbullet]

Pretty sure that one of the regular forum posters is in the classic ecu repair game?

[DigiMatrix]

I have fixed 5 of these ECU's now.  It can be a number of things, but I have also seen 2 where the voltage regulator chip has died and these are not available.  When you cycle on the ignition, do you hear the fuel pump cycle for 2 seconds?  

[Epiphone]

this thread is following my diagnostics for the issue

viewtopic.php?p=8312307#p8312307

In summary, bad ignition from fuse box to engine bay wire (Black)
and then also yesterday bad ground from pump to engine bay ground (12), even though I cleaned that up recently, but guess cable is bad somewhere