schematic for MAF
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source signal wire for water injection controller
can anyone shed light on this. trying to pick the correct wire for the controller input signal.
the only voltages at idle I am getting is the 14V and a 2V one. when I go to varying RPMS the 2V one does not change. I thought 1 of the wires would have a varying output from 0 to 5V as air pressure increased.
the only voltages at idle I am getting is the 14V and a 2V one. when I go to varying RPMS the 2V one does not change. I thought 1 of the wires would have a varying output from 0 to 5V as air pressure increased.
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No I'm using the trucks ground because the controller for the injection system provides only one wire for the signal in from the sensor.
The signal wants 0 to 5 v and so far I'm ding the 14v circuit and a circuit the produces 2v at 700, 1000, and 1500 rpm.
I'm not finding a variable 0 to 5v signal out from this sensor.
Truck runs fine so not a question of defective sensor.
Sending the kit back. Got my rma number so no more time to figure it out.
The signal wants 0 to 5 v and so far I'm ding the 14v circuit and a circuit the produces 2v at 700, 1000, and 1500 rpm.
I'm not finding a variable 0 to 5v signal out from this sensor.
Truck runs fine so not a question of defective sensor.
Sending the kit back. Got my rma number so no more time to figure it out.
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From: St Louis
The connector diagram in post 2 above is INVALID for a '10 6.4L. Too old....
The correct wire for the MAF output is the YE/VT wire with the blue wire as the signal return.
The correct wire for the MAF output is the YE/VT wire with the blue wire as the signal return.
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after doing so....it dawned on me that I was attempting to tap the wrong signal. The above is before the turbo.....I need a pressure sensor after the turbo....looked around and dont see anything obvious. Maybe I need to install an after market air pressure sensor that can provide 0-5V as boost increases.
At this point, my next steps is to solve the "where to get the boost pressure" signal question.....if I can figure that out...and its verifiable....I'll re-order the kit.
Alternatively.....it would be even better if I can figure out how to get 0-5V as exhaust temp increases.
anyway....thanks for the input...I guess this water injection stuff is really a new frontier on this forum.
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