About to plug it in! Any last minute tips?

[griffrhysjones]

Another remanufactured ECU arrived this morning?, Any tips before I plug it in? I really don't want to fry ECU number 3!! Checked earths, and no the battery isn't on the wrong way round, anything else I should check? Of course I could just be using sub-standard remanufactered ECU's and there could be nothing wrong with the car at all! Will fire her up this evening and post the result, Simon.

[Aaron C. Reskew]

Disconnect the battery.

[griffrhysjones]

Thanks, but after consulting the bible it says that any sparks made while reconnecting the battery can damage the ECU! So you can't win either way!!

[Stu247]

Much safer to disconnect battery first !!!
Disconnect negative first, followed by positive and reconnect positive first followed by negative.

I would never replace any electronic component without disconnecting the battery.

Good luck.
Stu.

[groucho]

griffrhysjones said:

Thanks, but after consulting the bible it says that any sparks made while reconnecting the battery can damage the ECU! So you can't win either way!!

Bloody hell, I changed the main fuses on my griff the other day. Disconnected the negative terminal and when I went to reconnect it, it was sparking like fk. How the hell do you disconnect the battery and reconnect it without it sparking?

I hope I haven't damaged anything, I took it for a 20 mile drive and it was OK. That's the last time I fk about with it. Leave it to the experts.

[david beer]

When reconnecting, just make the one firm contact, a bit tricky down there though !!

[griffrhysjones]

Replaced relays with the correct bosch ones, disconnected battery before connecting new ECU and BINGO! Hope this one lasts more than a couple of hundred miles. When replacing everything back into the footwell I noticed how easy it would be for the metal relays to move and risk the possibility of shorting something, so wrapped everything up individually in a layer of bubble wrap, paranoid or what??

[griffter]

griffrhysjones said:

Replaced relays with the correct bosch ones, disconnected battery before connecting new ECU and BINGO! Hope this one lasts more than a couple of hundred miles. When replacing everything back into the footwell I noticed how easy it would be for the metal relays to move and risk the possibility of shorting something, so wrapped everything up individually in a layer of bubble wrap, paranoid or what??

Good work - it'll be the first of many 'mods' to overcome the inherent 'character' in these wonderful cars. Careful the bubble wrap doesn't insulate the relays to the point of their overheating though - they do get quite hot.