Ok took the ECU out to fit the scoobyecu in it (93 wrx)

Anyway turns out I cant just fit it in I have to solder it.

So I bought myself a nice mircro solder iron out of B&Q, cause how hard could soldering be ? :-S

Now I matched the chip up on the ECU and there is NO WAY on this earth I am going to get the solder tip in to secure one of the sides down on the ECU

How did you guys do it ?

If you have soldered it you will know what I mean there is either a chip in the way on the board to stop you getting in from the back with the iron or the chip is so small you cant get the iron under neath

Someone please help. I am sick of stripping the interior apart to get at the ECU !

 

Don't understand your problem..... as I have done about 60+

Remove the board from the ECU case, turn it over and use a good quality soldering iron and solder sucker to remove the solder from the 28 holes (2 rows of 14).

Then fit the 28 pin chip socket, then plug the ScoobyECU into the new socket. It's best to use a socket cause then you can just remove the ScoobyECU if required (and rejoin J1 to put back to stock)

Cut of Remove the brown resistor J1 (Not L1) and away you go.

 

so the solders which are on the ECU board (the ones which stop you pushing the scoobyecu into place on the board) can be pushed through and made like a newer style board if you like ? where the chip is pushed through the holes into place ?

thanks

 

No not pushed through but de-soldered.
Heat them then suck the solder out with a solder sucking tool. The Soldering iron and tool need to be good quality tho' to avoid damaging the main board.

 

drop me a mail and ill help you out

 

Nicky, Give me a shout, I can give you a hand if you need it.
Big Daz

 

bought a solder pump today to remove the solder from the board

have just removed the solder and managed to get the ScoobyECU fitted, cut the resistor and plugged it in

turned the ignition to stage 2 and the injectors etc are clicking and the lights on the dash are flashing along with the Check Engine Light

the car wont turn over.

??

 

anyone ??

:-(

 

Did you cut L1 or J1 ?
They look the same, but it's J1 that needs cutting.

 

deffo cut the right one

I tripple checked it !

also I took the ScoobyECU out and soldered the resistor back together again so I can get the car running.

It starts and drives ok but when I come to a junction it hunt and cuts out or just cuts out !

It was ok before....any ideas ?

 

yup.. youve damaged something when doing your soldering.

Makesure your joint at J1 is ok.. remove the lacquer / paint and ensure a good joint.. also ensure you havent bridged tracks or scratched anything.

David

 

is that why the chip didnt work or is that why the revs keep dropping ?

ta