Okiki Olufokunbi Posted March 20, 2013 Share Posted March 20, 2013 Hello all,I am still dealing with the issues I discussed in the thread below, but I do have a question based on what we are observing now. I am not physically present at the truck in person, but this based on feedback from the folks working on it. The truck is a 1993 CH613 E7 with an electronic injection pumpWe got a new ECM as the old one appears to be fried, but it looks like the replacement ECM is unable to rack actuator open to even allow the truck to start. We replaced the electronic governor with another electronic governor, and still had the same result.The ECM was bypassed, and 12V battery power was fed to the Electronic pump via the harness between the ECM and pump, and the rack actuator (was powered and the vehicle started. This was with both the two electronic racks. With the electronic racks uncoupled from the injection pump, I am told that the ECM still could not power the solenoid to move the actuator rackThe question I have is this. What amount of power (currrent or voltage) should the ECM be sending to the solenoid magnets to move the rack actuator? Is it equivalent to battery power or is the battery power too much?From all this information, I am concluding that there is something faulty with the ECM we got and I need to try another ECM. But I will appreciate any other troubleshooting options for power loss between the ECM and the electronic rack on the pump, assuming the ECM is sending out the correct amount of current and voltage to the pump.ThanksLink to old threadhttp://www.bigmacktrucks.com/index.php?/topic/30461-injector-pump-output-controller-question-cyclic-engine-rev-issues/ Quote Link to comment Share on other sites More sharing options...
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