A4 B5 06.99, AFB 2.5TDi 110kw.
Had an DEY tiptronic gearbox, replaced with FTL 01E 6speed from an 01 A6 C5.
My car had an 8D0 907 401 F ECU (AFB, tiptronic), didn't let me to recode it. For some reason after the transmission swap I got fault code:
00550 - Start of Injection Regulation
17-10 - Control Difference - Intermittent
and LOTS of smoke from the exhaust.
So I thought maybe I'll get an 6speed manual ECU (8D0 907 401 G) from a scrapyard. Now I get the same code 00550 but no TCU errors. Also the relay 214 went nuts (clicking) and my pump in the fuel tank started working non stop. Removed the relay and started the engine, tried to check timing with VCDS and engine started to retard and advance itself but never got to the point when it really showed the timing. After that I checked fault codes and now there was an new error:
01126 - Engine Speed Signal
16-00 - Signal Outside Specifications
Also the 00550 was there.
Any ideas? Is the ECU wiring different (tiptronic vs manual)? New ECU itself has gone bad? Injection pump can't be bad because it has been rebuilt few months ago and operated great.
EDIT: the N75 also started clicking and got hot if I connected the manual ECU, didn't matter if the ignition was on or off.
Had an DEY tiptronic gearbox, replaced with FTL 01E 6speed from an 01 A6 C5.
My car had an 8D0 907 401 F ECU (AFB, tiptronic), didn't let me to recode it. For some reason after the transmission swap I got fault code:
00550 - Start of Injection Regulation
17-10 - Control Difference - Intermittent
and LOTS of smoke from the exhaust.
So I thought maybe I'll get an 6speed manual ECU (8D0 907 401 G) from a scrapyard. Now I get the same code 00550 but no TCU errors. Also the relay 214 went nuts (clicking) and my pump in the fuel tank started working non stop. Removed the relay and started the engine, tried to check timing with VCDS and engine started to retard and advance itself but never got to the point when it really showed the timing. After that I checked fault codes and now there was an new error:
01126 - Engine Speed Signal
16-00 - Signal Outside Specifications
Also the 00550 was there.
Any ideas? Is the ECU wiring different (tiptronic vs manual)? New ECU itself has gone bad? Injection pump can't be bad because it has been rebuilt few months ago and operated great.
EDIT: the N75 also started clicking and got hot if I connected the manual ECU, didn't matter if the ignition was on or off.