bloomer

as some of you might know, i'm doing an 89 t2 jdm motor in my 86 rx,
between 86 and 89 the harnesses changed for the cars, and i basicly had to make my own harness out of the two i had, with all the essentials such as the cas, injectors, tps, cts, etc...
now everything is connected and working, but the car won't start.
so i checked:
spark----good
compression------good
fuel pressure-----good
oil pressure from omp----good

and i checked the injectors with the noid lights, and only the first primary flashed.
i went to check all of my other connections, where the blk/yel wires intersect, etc..
and everything looks fine, but the ecu is only shoting at the one injector.

so my ideas are either it's the ecu, improper cas connection, or the differrence between the 86 and 89 does not allow the injectors to fire. but all injectors have power, they're just not getting the signal from the ecu, so if you had enough passions to read all of this hit me back...

MARTIN

more info. What ecu, what inj? Assuming you are using stock 89 inj and 89 ecu, then you should check your wiring. If one injector is firing, then the cas has nothing to do with it, not to mention the spark.

Now of the 2 wires the goes to every inj, one is a constant 12v, and the other is a ground placed by the ecu. So put the ign to "ON" and check all the injectors. There should be 12v at every single inj. If there is not, then you should retrace your wiring. If there is 12v at every inj. then your problem is in the signal from the ecu.

bloomer

so if the signal from the ecu is the problem then i should try another ecu?

MARTIN

Well I think its something in your wiring. I kinda doubt it will be firing your coils and one inj if it were really blown.

bloomer

oh i know what you mean but i checked both coils and al four spark plugs are firing, like i said only one of the injectors is firing, but i gues i'll unwrap the harness AGAIN, and see if somethin's wrong...

bloomer

<bump>

mr_vaughn

iTrader: (1)

could you have low imp. injectors but the ecu uses high imp.

so you would need the resistors

bloomer

nevermind everyone i went to basics and checked for fuel which i didn't have so i hard wired the pump, and started wright up.