Engine keeps running after ignition key is turned off

[dan512]

I have a 1979 SC backdated to a 911R that I bought from Jim Tweet on here. The built post is on Pelican as well.

The engine is pimped out with ITB’s, EFI and an AEM Infinity ECU.

If I turn the ignition key to off, the engine will keep running until I press the brake pedal.

What could cause this? How do I fix it?

Dan

[jimtweet]

Originally Posted by dan512

I have a 1979 SC backdated to a 911R that I bought from Jim Tweet on here. The built post is on Pelican as well.

The engine is pimped out with ITB’s, EFI and an AEM Infinity ECU.

If I turn the ignition key to off, the engine will keep running until I press the brake pedal.

What could cause this? How do I fix it?

Dan

Contact Andrew from Rasant, at the time I installed his kit he was not including a alternator relay. It has to do with power back feeding from alternator into the ecu. I believe he has a fix for this now.

[rattlsnak]

Plenty of threads on this. Do a search.. You will need a new or to add a diode.