Rev the engine above 2500 RPM, it should throw the code for #6 injector circuit.
Mine would not throw the code till I revved it long enough.
I found the problem, finally. I should have gone with my gut feeling from the
very beginning rather than let someone poke into the X2 connector with test
leads, and try and clean the pins and plug with freeking PB Blaster...
It's the X2 connector at the ECU, the longer one.
Beforehand, I had all the injectors tested from the X2 connector, for shorts,
and resistance. They were all at 1.5 to 1.7 ohms, which is normal. I believe
the test pins spread the contacts inside the plug out farther, because the severity
of the misfires got worse immediately afterwards, and has misfires on cylinders
that never had them. So, I had an idea....
When the engine was running, I used my thumb and index finger to put torque on
it to the right, a twisting torque at the connector. The engine stumbled and
recovered with the misfire spreading to #3, #5, which I NEVER had an issue with.
I now had a misfire on, #5 and #6, but no longer #4. I did this by putting the
my thumb on the right bottom corner, and index finger on the top left corner,
and just applied some clockwise torque on the connector.
I then put a twist on it to the left, the engine stumbled, knocked, and got so
bad I had to shut the engine off. One time it shut down on it's own. I had misfires
on #2, #3, #5, and #6. It got all pissed off...
So, what I did was, I used a flat head screw-driver, and stuck it down between
the left row of pins. I carefully spread the pins apart from each other, but did not
go all the way down towards the X1 plug, I thought all the injector control lines
were up at the top. I plugged the header back in, and now only had ONE code,
for #6, I think it was P0206, and #5 was now firing, it had fuel.
I pulled the X2 connector again, and spread the pins at the 3 & 4 area. Plugged
X2 back in, and VOILA! The engine was now running! No misfires.
My ECU is loose in the bracket, it vibrates, and flops side to side on turns. That
must apply just enough torque to the X2 connector, with engine torque, that is
lightly twists the connector by the wire bundle going out to the motor, like a
tether.
So, as of now, it's running, and there are no codes.
FI pins on X2 are:
#6: 2 & 3
#3: 26 & 27
#5: 28 & 29
#4: 50 & 74
#1: 51 & 75
#2: 52 & 53
The rows of pins look like rows of IDE or SCSI pins. You put the flat head screw driver
in between the left row of pins, and gently swing the handle to side to side, to spread
the pins apart from each other. move down, again, move down, again. They
do not need to move away from each other more than 1mm.
The problem is loss of contact in X2 female receptacles. This is a temporary
fix, spreading the rows apart. You will need a new connector eventually, as will I.
Just slightly move all the pins apart. This is a very old trick practiced by many
IT guys, from unplugging, and plugging in IDE, FLOPPY, and SCSI drives into the
interface, and they stop working because the contacts in the plug widen from
that use, and no longer make good contact. We simply spread the pins apart
a little, and the device would work again, then we knew we needed a new data
ribbon cable for the device.