So, plugged in a new abs pump, the electrical connections only and left the fluid lines connected. ran it a few times and the four abs lights were off. Thought I had my problem sorted, so I plumed in the brake lines and did the full swap. The lights are BACK!. I am losing my mind on this. ABS amigo give the below. Any ideas on where to look next?

I did have the Option B done on the original one and the green wire was likely loose, in hindsight may have been the cause of my issue. When I installed the new one, spliced that wire back together.

Logged Faults:
033:Front Left out valve open circuit
035:Rear Right out valve open circuit
<-END Faults

 

You might think about doing a full fluid flush to get out all the air? I've always done my brake bleeds with a buddy helping out to make sure we get all the air out.

 

I plan on doing that, but not sure that affects the four amigos, does it?

 

Air in the brake lines is never a good thing. I'm not 100% sure if it will cure your codes.

 

Funny, today the lights are gone.

Who knows. Going to hope it stays that way.

But now I have a couple codes,
P1590 and P1415, which have been going for while. But in the absence of the four amigos, are now getting some attention.

The guy that pinned my cylinders thinks the P1415 is due to the valve next to the purge valve, the Hyundai valve. I forget what it is called, need to do some more work on it.

The P1590 is a brake code, hoping that goes away with the Amigos.

 

P1590 is a generic trouble code. A lot of things can cause it -- not just brakes. Sometimes it's a flaky wheel sensor.