Guy-Fast

cutting j1 should ecu go back to stock

projekteg

you have to physically remove the chip also, or you get a solid cel.

turbohf

so tonight i got a new desoldering tool...didnt seem to work to well for desoldering my ----... so i got pissed and cranked up the heat a little on the iron and hit up every pin i soldered again and added solder where nessisary rejumped it burned another chip and....IT WORKED...

im not understanding something... you suppost to cut the jumper and everythign is supost to revert back to stock right? well i didnt touch ---- except in the dotted lines, so when i cut the jumper it should be stock agian... but it still threw a solid CEL


post more about somethign that follows this...

sohc_mshue

which chip needs to be removed when cutting the jumper to check if it goes back to normal? The 74hc or the rom chip? I'm asking because my friend's ecu randomly stopped working one day. We cut the j1 and it still threw a solid cel so we just thought the ecu was fried. I'm guessing we should have taken the chip out too before desoldering everything and putting it in another ecu :P

projekteg

yeah, you have to remove the (e)eprom and cut j1.....

sohc_mshue

damn i wish we had tried that. He tried resoldering everything and it still didn't work either so who knows...

turbohf

didnt work for me...