Ok so I have an n/a s4 base model...got the car for free with a blown motor. I sourced another n/a s4 full swap which I KNOW FOR A FACT was in full working order before pulled from my buddy's car. So my friend and I pulled the blown motor out and dropped the new one in. Before putting the new one in, we cleaned it up reeeeaaaallllly well, and deleted pretty much all the stupid emissions bs. So we put the swap in, get everything plugged up.....and we have issues. The motor turns over... and that is it. We have no spark, and there is no power to the dash at all(only thing functioning on the dash is the voltmeter), no power to headlights, or taillights. We've determined that the fuel pump is shot so...thats the only diagnosis on fuel delivery so far.....SOMEBODY please HELP!!!!!!!!!!

 

Nobody? Someone please help me out!

 

Check for the correct grounds being hooked up for the loss of electrical power.

 

did u swap a whole new harness in? maybe you mis matched some ****.

 

Make sure the 40 amp EGI INJ fuse in the Engine fuse box is good as it powers the coils in addition to the injectors. The Black/Yellow wire at the leading coil should have battery voltage w/key to on. Also, make sure the 15 amp Engine fuse in the interior fuse box is good. If the Main Relay clicks w/key to on then the Engine fuse is good.

For the headlights make sure the 30 amp Head fuse is good as well as the 15 amp Illumination fuse.

 

my friend and i have some pretty extensive experience between us with doing motor swaps and such but we are both new to the rotary scene.....but i do believe that we have all of the grounds.

 

the harness we are using came with the swap we got, so yea it is a different harness. being that we deleted egr, omp, and almost every vacuum line and all that gayness we have some unused plugs....

 

u may have something here! is the main relay the one like under the steering collumn?

 

btw, thanks for taking the time to help me out!

 

Its next to the trailing coil and has two plus connected to it.

 

not much on the fc's but if u could use a hand sometime let me know. i'm on the west side.

 

sweet! well if we cant get anything figured out today then we could prob definitely use a hand

 

so you stripped emissions from an n/a model where they served a purpose other than weighing down the car and now it has issues.. sorry but i'm not helping anymore when people disregard common sense with these cars.

all that work results in a slower car with erratic idle that smells like a gas station.

 

that's cool man, was'nt really looking for opinions.....just help, but i appreciate it

 

check the 80 amp fuse and the black connector below the fuse box in the engine bay.