TII swap;l no injector pulse
10-26-12, 06:49 PM
#1
TII swap;l no injector pulse
I am about to finish my S4 TII swap. I am using a N318 ECU. My problem is that I do have spark, but the injectors are not working at all. I checked the spark plugs and there is no fuel at all on them. I checked the voltage at the ECU and I am getting a reading of less than a volt. (0.45v) I did search for any possible causes but did not find much. Any help would be apprecciated.
Hernan
Hernan
10-26-12, 08:22 PM
#2
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Do you have power through the resister pack and to the injectors?
The ecu grounds them so they fire/squirt.
Have the injectors been cleaned? If you use power and ground jumper wires can you hear the injectors click?
The ecu grounds them so they fire/squirt.
Have the injectors been cleaned? If you use power and ground jumper wires can you hear the injectors click?
10-26-12, 08:53 PM
#4
trace the injector wires? did you leave the engine harness completely alone?
there is also a small chance that your S4 engine was an '88 which still used injectors w/ square plug ends, but were high impedance (12-13 ohm) and required no resistor pack
there is also a small chance that your S4 engine was an '88 which still used injectors w/ square plug ends, but were high impedance (12-13 ohm) and required no resistor pack
10-26-12, 10:27 PM
#7
^ ditto
if you incorporated the FC's main relay (or not too) you should be able to get battery voltage to the injectors w/ key on. you can test at the injectors themselves, anywhere in the injector harness, or even back probing at the ECU's plug.
how exactly did you go about meshing the engine harness into the chassis wiring?
if you incorporated the FC's main relay (or not too) you should be able to get battery voltage to the injectors w/ key on. you can test at the injectors themselves, anywhere in the injector harness, or even back probing at the ECU's plug.
how exactly did you go about meshing the engine harness into the chassis wiring?
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10-26-12, 11:33 PM
#9
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We need more info, what exactly did you do for the swap? The ecu provides the ground for the injectors not the power, so the question is how did you wire in the injectors?
