Secondary Injectors not working
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Secondary Injectors not working
Hi, new to the Club. I recently bought a 91 RX7 Very non turbo. Secondary injectors not engaging at 3800rpms. Acceleration dulls out completely around 5000rpms in every gear. Replaced ECU and still no changes. Is this a potential fuel pump or filter issue? Is there a solenoid resistor that may need replacing? I'm Stumped. Any suggestions would be appreciated. Thank you.
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Ran wire from single green connector to ground on battery. Engine light not flashing. Just turns off. Any suggestions or does that simply mean there are no error codes?
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Thanks Satch, next step is to take the injectors out themselves and see if the coils are still good. I'll continue to try and get to the bottom of this.
#10
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You can add grounds to the grounds at the ECU. You could also unplug the TPS and remove the vacuum hose from the pressure sensor and you can trick the secondary injectors into firing above 3800 rpm w/the car in neutral. You can test the secondary injector wires at the ECU (2 of them) to see if they are pulsing a ground when they are supposed to be working. An LED light connected to a source of voltage and the other wire to one of the secondary injectors ECU pins and w/the engine rpm above 3800 the light should flash/flicker to indicate the ECU is at least doing its job.
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You can add grounds to the grounds at the ECU. You could also unplug the TPS and remove the vacuum hose from the pressure sensor and you can trick the secondary injectors into firing above 3800 rpm w/the car in neutral. You can test the secondary injector wires at the ECU (2 of them) to see if they are pulsing a ground when they are supposed to be working. An LED light connected to a source of voltage and the other wire to one of the secondary injectors ECU pins and w/the engine rpm above 3800 the light should flash/flicker to indicate the ECU is at least doing its job.
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