Sonic Boom

iTrader: (11)

I have a slight problem, No. 1 Injector is fully open all the time from the moment you crank it and when it's running.
Have ruled out the injector it's self by swapping them over and the ECU and chip changed them as well.
What could it be? Wiring? If so what am I looking for? If it was a broken wire surely it wouldn't open at all not be wide open all the time.
Cheers Rich

tabetha

If you have ruled out a dud injector and ecu, that leaves the wiring.
The injectors receive 12v live when the ignition is switched on, the ecu switches the earth to each as needed.
So have a look around for chafed wire that is grounding that goes to no1 injector.
If the loom has recently been patched up a problem that can occur is the no1 and 2 injector lead are the same length as the iscv lead, and these inadvertantly get swapped over, causing continually earth signal(as the iscv is), that's only if it been falling to bits and been taped up wrong.
tabetha

Sonic Boom

iTrader: (11)

Problem located; Injector No.1 wire had worn throught by the back of the swedish inlet next to te bulk head earthing out on the inlet and was running the injector 100% all the time!
Rich

tabetha

Good news then, even better it's FREE!!
tabetha

dojj

iTrader: (3)

same problem killed my car when it went up in flames, so good thing you've located the problem

might be worth checking all the other wiring now you've got it apart

Sonic Boom

iTrader: (11)

Checked all the wiring today had the dash out as well as i'm wiring in a load of defi's and a wideband AFR gauge.
All seems well now, I want to get a new engine loom from Ryan which i'll hopefully buy before x-mas.
Rich