Fitting a 110bhp tdi in place 90bhp tdi in a A4

[goodall]

Out 95 a4 shredded its fan belt which managed to get in behind the timing belt and strip it. So was decided buy a crashed a4 which was bought on strength that was running and had a tdi engine, its arrived and turned out to be a 110bhp model. Have since swapped the engines, engine looms and ignition barrel, but cant get to run. Shows the key, in the dash cluster guess means immobiliser. Will fire up for about a second but quickly dies. Anyone on here know that could help

[mcandmar]

This might be of interest.. http://www.ross-tech.com/vag-com/cars/immobilizer.html

[s2avant]

Did you swap ECU's? If they are both '95 vintage it probably needs the ECU matching to the Immo control unit. Easy fix in VAG-COM although I can't remember how of the top of my head.

Ben

[irishs2]

I did this on a caddy, but swapped the glass rfid chip inside the keys instead, but had to change ECU and there was a electronics module that connected to the ignition barrel that had to be swapped too.

[goodall]

Ah so I dont need to do the ignition barrel can use vag com to make work as then just be a ecu change. However where do get the 4-digit login code?

[s2avant]

You shouldn't need the login code for an ECU swap. IIRC you just go into the Immo ECU (Group 25) and reset group 000.

Ben

[goodall]

All sorted now, real handy once manage to get a 'registered' copy vagcat

Thanks help guys