saff cosworth

hi all, my saff 4x4 has a problem... no. 3 cylinder is over fueling.
removed the injectors and switched on the ignition. no.3 is pissing out fuel
when i disconnect it from electrics it's stops..
checked voltage at injectors,,one side has battery voltage,the other side
has voltage dropping from "5"volts to "0"
on no. 3 cylinder it has full battery voltage on one side and stayes at "5"volts on the other side of the connector...
checked the plugs and for a spark and they seemed to be ok...

ANY IDEAS????????? IT'S REALY DOING MY HEAD IN

2001ode

iTrader: (1)

Hi,

Try an other ECU.

Regards

Claude

saff cosworth

checked all the injectors, the wires to the injectors, changed the plugs,
checked the phase sensor, tempreture sensor, idle sensor, air sensor, even swoped the ecu from a friends car that was running fine...
no such luck...
HELP.....

Glenn_

iTrader: (1)

Just a daft question. Have you checked the 3 black electrical connectors on the bulkhead just to make sure they have a good question. Its just a thought.

saff cosworth

THANKS FOR REPLYING,,, yes i checked all earth connections to and from the battery. and all connectors...inside and outside the car..

JTECH James

iTrader: (13)

the injectors have a constant live and the ecu triggers the earth....

so it could be a possible case of a short in the loom and the injector wire is going to ground and constantly firing....

unplug the ecu and run a continuity check through the injector wires

saff cosworth

unplug the ecu and run a continuity check through the injector wires


hi all,, thanks for replying...
done that continuity check and everything seem's to be ok..

i mean i love my car. but this is realy getting to me now.
and the long weekend comming up and all....

JTECH James

iTrader: (13)

with the ecu unplugged, is one of the injector wires earth on the problem injector?

saff cosworth

happy days

found the problem. while checking for a good spark tonight in the dark,i had no.3 plug sitting on the rocker cover,turned the engine over and saw
a spark jump from the end of the plug lead, (where the plug sits into).
replaced the lead and everything is perfect.
now i'm going to have a shower, get in my car, and DRIVE...


didn't think a bad lead would cause the ECU to send a wrong signal to the injector...anyone have this problem before?????

AndyPen

iTrader: (24)

Nope but hope you've had a blast mate

Glenn_

iTrader: (1)

Nice one mate glad you got it sorted . I hope you enjoyed your drive out in your car to.