Here's the story.
month ago:
I replaced the shuttle valve and the seals.
replaced brake fluid with DOT4 blueracing brake fluid.
codes cleared all good.

Today:
Battery disconnected, did some welding on the exhaust
drove around for about 30 minutes and the 3 amigos came on.

The image above is what I read on the scanner.

all codes now cleared, 3 amigos gone, and its driving fine.

Any ideas as to why these codes came up again?

I was considering all new sensors, but I'm not sure it needs it.
Thank you for your time.
Jay

http://i127.photobucket.com/albums/p...j/aad0ecfc.jpg

 

drive it till they come on again and then see what codes you get