Harness Toyota

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Posted by admin | Posted in Parts And Stuff | Posted on 02-12-2017

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Harness Toyota

Harness Toyota
I cannot get the injectors to pulse or the fuel pump to run in a 1986 toyota MR2, what would cause this?

I have a 86 toy. MR2. Have replaced the fuel pump and every relay in the car, have checked for open circuits and bad fuses, bad grounds etc. Every thing checks out and all relays checks to specs, however when you check the pulse on the injectors there is no fire to them either. You can put 12 volts to the fuel pump and it will run but the car still will not start because the injectors isn't working... Is there something in the relays that signals the fuel pump and the injectors? are they on the same circuit? you can spray fuel in the throttlebody and the car will start. has any one ever came across this problem and if so what did the problem exsit of? I have checked the entire wire harness for broke wires, all the relays and fuses and circuit breakers and cannot find anything wrong, but still will not fire the injectors or run the fuel pump.

If the fuel pump relay and wiring is good as you say, I would check the ignition switch and wiring. The fuel pump, and injectors will only power up with the key in the "on" or "start" position. If the ignition switch or its wiring are not working correctly, they will never turn on.

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Originally posted 2010-10-08 02:10:10.

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