Holley dominator guru's
Thread Starter
Launching!
Joined: Jan 2008
Posts: 248
Likes: 0
From: MN
Holley dominator guru's Been working with doug at Holley for the following issue. Any insight or thoughts.
I'm in the process of installing the dominator and dyno tuning an blown ls1. Unfortunately I think we fried the ecu tonight. After talking with Holley they don't think the ECU is damaged and trying to trouble shoot.
We keep blowing the 20amp fuse for the relay that supplies power to the fuel pump, injectors and coils after about 3 revolutions of the engine. The fuel pump wire is not hook up, engine has spark, and injectors won't pulse. When we unhook the injector harness and crank engine over the fuse don't blow so we have it narrowed down to ECU or Injectors?
I'm in the process of installing the dominator and dyno tuning an blown ls1. Unfortunately I think we fried the ecu tonight. After talking with Holley they don't think the ECU is damaged and trying to trouble shoot.
We keep blowing the 20amp fuse for the relay that supplies power to the fuel pump, injectors and coils after about 3 revolutions of the engine. The fuel pump wire is not hook up, engine has spark, and injectors won't pulse. When we unhook the injector harness and crank engine over the fuse don't blow so we have it narrowed down to ECU or Injectors?
The Real questions to figure this out come down to the Circuit itself...
why do you have all of that stuff on (1) 20 amp fuse...
Fuel Pump should be on its own fuse
The Stock ECU has its own fused power for Coils/injectors/Fuel pump
Just look at any stock fuse box..
Each injector bank has a 15 amp fuse, the ignition as a whole gets a 20 amp fuse, and the fuel pump on its own gets a 20 (if I remember correctly)
so easily over 20 amps total....
that would be why you are blowing a 20 amp fuse.
The Holley gets power for Injectors and Coils thru the Main Power If I remember correctly...
why do you have all of that stuff on (1) 20 amp fuse...
Fuel Pump should be on its own fuse
The Stock ECU has its own fused power for Coils/injectors/Fuel pump
Just look at any stock fuse box..
Each injector bank has a 15 amp fuse, the ignition as a whole gets a 20 amp fuse, and the fuel pump on its own gets a 20 (if I remember correctly)
so easily over 20 amps total....
that would be why you are blowing a 20 amp fuse.
The Holley gets power for Injectors and Coils thru the Main Power If I remember correctly...
Thread Starter
Launching!
Joined: Jan 2008
Posts: 248
Likes: 0
From: MN
Ended up being a shorted injector. From the power terminal to body. Windings were 4ohms. So it had me scratching my head. Thanks to Holley for some in site. Got it running and its an amazing ecu I can. Say that.
