Engine won't shut off! HELP!

[jesus888]

So we finally got the SOB cranked, got the timing adjusted.

When we turn the key to the OFF position... it WON'T shut off...

EFI, 302, Petronix Coil, Centech Wiring Harness, 3G Alternator, Reworked Mustang Harness (Kolibar Customs).

Please give us any possible explanations...

 

[Viperwolf1]

Relays are triggered by constant 12V instead of switched 12V?

 

[jesus888]

kolibar harness gave me a positive to connect direct to battery; so you are saying the main power source for the efi harness should be switched.

 

[Viperwolf1]

No. But the relay triggers need to be connected to switched power.

 

[jesus888]

This was related to a defective alternator backfeeding the system. Alternator replaced, problem solved ;D