i i have fitted a c20xe engine in my corsa every thing is working fine,it even turns over,but i realised i wasn't gettin a spark and traced it back to the thickish black wire that runs striaght from my coil to the ecu this wire isn't getting power(but the ecu is) any on got any ideas why(i have checked the wire a the ecu end and at the coil end so it's deffinatly not got a break in it,do u think it might not be connected to the ecu plug properly
the engine is out of a gte and the wiring is appaulling(it's a red and black wire covered by a black cover is found in the ignition module pin 4 and in the ecu not sure on the pin,this is what gives the power to the coil for the spark
after taking apart the ecu plug i found that some re wiring work had gone on in side the plug i had 2 black wires sticking out of the top of the plug(which i hadn't connected to any thing,there is a red and black wire in pin 1 with a extension soldered onto it so i have a black wire coming out the top of the plug then futher over i have a black and red wire again joined into the same pin as a thickish brown wire the black and red wire from here as also got a black extension wire soldered onto it,so when the plug is connected to the ecu i have to black wires dangaling out of the top of the ecu plug which go to nothing should these wires have a ignition live running to them (making the coil wire live on ignition)
yep the fuel pump is running
yep the injectors are allowing fuel to pass
and yep the ecu light,lights up on the dash,but only until i turn it over then it goes out
the cutting of those wires and lots of unknown blacks sounds like an aftermarket imobliser has been previously fitted.... return the wires to the factory setup then try it (copy wiring diagram in haynes).... did u see the engine running in the car it came from? did u remove it yourself?
i bought the engine off a friend who deals in salvage gte's and gsi's,he assured me it worked fine in the gte(but i never saw it running)and he took the engine out,but pin 1 on the ecu isn't live ????????does this mean the ecu is knackered(the ecu lights up it has a live going to it everything else works just pin 1
right well thats sorted i'm getting fuel,(fuel pumps running) the engines turning over,but i ain't getting a spark from the coil,the only live wire when ignition is turned on in the ignition module is black/yellow,any ideas why i ain't getting a spark?
i can see what you mean about pin 1 now it connects into pin 24 aswell(earth)according to my wiring diagram