MK3 won't shut off after 2jzgte vvti swap

[cmora24]

To start off, my car is a 1992 turbo auto converted to 2jzgte vvti r154.

The problem: car won't shut off after turning ignition off. Car stays on until I disconnect either the battery, EFI fuse, or EFI relay.

The Aristo ecu M-relay output has 12 volts when switched on. I turn the car on and it starts fine. Then once I turn the ignition switch off, the engine keeps on running and there are 12 volts at M relay at aristo ecu and at the efi main relay.

Any suggestions?

 

[te72]

If you turn the key to the ON position, then turn it off, without starting the car, does anything else stay on? Just a shot in the dark here, but could be something in the ignition switch. That said, full disclaimer, I am not great at electrical troubleshooting, so good luck!

 

[Zazzn]

betting you have the +B constant powering the ECU instead of the switched +12V from MRLY.

Check with a volt meter, the power pins on the ECU there should be 1 thats constant 12 volt. and I think 2 main 12V swtiched.

 

[_Darth_vaider_]

Check alternator if you leave the bolt loose it will stay on

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