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dingo wrote: ↑Mon May 15, 2017 6:25 pmYeah thanks will do. I did do that, but at this point...a re-do is all i got
I did notice that with harness plug removed pin10 get 12v with IGn ON...and Pin4 only get 4,5,6V as i crank....perhaps this is not enough
(i forget what site i got this testing protocol from..i just scribbled down 'pin 4 voltage while cranking')
I just got a fuel-injected bus going after two years of every possible question and test, ohms, voltage, and fuel supply, regarding the fuel injection system. I did a lousy job of explaining my hunches, but we had two weird moments.
1) a test lamp showed voltage persisting at the series resistors even after the ignition was shut off until an eventual click from the double relay shut things down. I think it was a blown diode in the double relay.
2) Even though the injector plugs showed twelve volts at both sides, we concluded that the plugs had to be in the circuit with the solenoid coils accounted for for the ECU to give us proof of grounding. I forced the ECU to prove the grounds by having the injectors pulled, plugged in, charged with full fuel pressure, and I manually opened the breaker points with a screwdriver to watch the injectors actually spray at every other point opening. Thankfully the fuel was stale, so no explosions.
His bus drove well enough and started readily by the time I left. You should note that the basics were critical:
a) fresh battery charge and fresh gas
b) clean and gap the points and make sure the plugs are dry and clean and gapped
c) call out that Itinerant guy when he is in your neck of the woods, we're batting a thousand.