93 Tracker ECU woes (no power to injector)

[fixkick]

THOSE 2 transistors , for the injectors are still sold.
a curve tracer works best on those, but nobody has one, today.

what does hotwing mean, it means removing the wire and putting 12vdc there, all the time.
this ends the pulsing on that line, dead. now is 12vdc.
if you meant adding a fuse inline, well that is 100% ok an smart, it saves the ECU when the injector or wire shorts, done many times here.

both the red and yellow wires to injector are pulsed of you bypass that.
12vdc to red
or 0v ground to yell.
the pulses end, now, and MPG goes to 15mpg or worse, the ECU can not control injections if you wreck those pulses, not only that they cool the injector but if lucky that fuse does protect the ECU, weve used 7amps too. ok.


this car is very unique, it does not work like any MPI cars made on earth (PNP, or NPN fired, one wire is 12vdc ignition and it fires to ground)
nor most TBI. but not this car, it runs dual fired wires.

this ecu fires both wires,

here is the scope readings that tell the full story

here is the cooling method used

http://www.fixkick.com/INJECTORS/TBI-pwm-wave1%20.jpg
12v at 1 ohm is 12 amp (I= E/R) but that current is only for 3mS , 3/1000th of a second and is also with cooling pulses to lower heat more.....
http://www.fixkick.com/INJECTORS/TBI-pwm-wave1%20.jpg


now red and yellow


red to ground
http://www.fixkick.com/INJECTORS/INJ-red-gnd-1w.jpg

yellow to ground
http://www.fixkick.com/INJECTORS/INJ-yel-to-gnd-w1.jpg

and transverss (red to yellow)
http://www.fixkick.com/INJECTORS/INJ-red-to-yel-w1.jpg


if not like this, the ECu gets all confused, due to being out of control, it must do 2 things , inject correctly and keep it cool, both.