the problem
The car is missing, #5 injector does not inject gas. I have checked spark its good. engine fault code was 25. I have verified all other cylinders work. I have verified I have 12volts between red wire and ground with ignition on. on injector #5. we did not get connectivity between ppine of white wire and main wire( where it is spliced into the wiring harness).
what I have done last
We replaced the section of wire that is tied into number 3 injector to include new female pin ( white wire). We put every thing back together and still number 5 does not get gas. I de pinned the 12vt side (red wire) and ran 12vlts to the injector when the car was running no change. We then (to verify we hand a good wire from # 5 injector to the ECU did a ohms test and it is good from the pin on the injector to the ecu. the injector works if I run wires direct to I have spark at that cylinder. I have to assume that if #3 injector is working fine that it is not the ECU. What am I missing? What Else could it be? HELP!
a little back history
We this summer replaced the engine with a JDM engine after original went out in May. this car had sat for 4 years and the PO did a bad job on a rebuild that he never finished. we got it last spring and put it back together and replace tons of pars. I have read the TSRM and used the wiring diagram to help me trouble shoot the issue. I have to long threads on Supra forum about this project. I am at a lost as to what else I can do. and son that is loosing hope that he will ever drive this car as it should drive.
thanks for help.
The car is missing, #5 injector does not inject gas. I have checked spark its good. engine fault code was 25. I have verified all other cylinders work. I have verified I have 12volts between red wire and ground with ignition on. on injector #5. we did not get connectivity between ppine of white wire and main wire( where it is spliced into the wiring harness).
what I have done last
We replaced the section of wire that is tied into number 3 injector to include new female pin ( white wire). We put every thing back together and still number 5 does not get gas. I de pinned the 12vt side (red wire) and ran 12vlts to the injector when the car was running no change. We then (to verify we hand a good wire from # 5 injector to the ECU did a ohms test and it is good from the pin on the injector to the ecu. the injector works if I run wires direct to I have spark at that cylinder. I have to assume that if #3 injector is working fine that it is not the ECU. What am I missing? What Else could it be? HELP!
a little back history
We this summer replaced the engine with a JDM engine after original went out in May. this car had sat for 4 years and the PO did a bad job on a rebuild that he never finished. we got it last spring and put it back together and replace tons of pars. I have read the TSRM and used the wiring diagram to help me trouble shoot the issue. I have to long threads on Supra forum about this project. I am at a lost as to what else I can do. and son that is loosing hope that he will ever drive this car as it should drive.
thanks for help.