Sounds like a bit of a weird question but here goes.

My mates brother is a bit of a boy racer and he's transplanted an engine out of a MKIII golf gti into his MKII golf. Problem is that its running really rough. I've offered to have a look at it, but I can't connect my VCDS kit to it because there is no diagnostics port.

Is there anything in the engine bay I can plug into to talk to the ECU using VCDS. I have a legit HEX-CAN Ross Tech lead BTW.

Will I need any adaptors to connect the VCDS lead up to it?

Cheers

Mike

No, needs to be through the diagnostic port.

You could pick out the k-line, 12v and ground from the ecu.

A couple of cars we have in here that have been transplanted i have to do this.

Kev

Go to a scrapyard and get a diagnostic socket with as much cable attached as you can get. You can then wire it in for future use.

This should also help.

Depending on the engine you may need to connect the 'L' line as well