Brake pressure

Hey y'all I have a big issue. I swapped out my rear axle. Disassembled all brake lines and everything. After completion and I go to bleed my brakes.

I'm getting new fluid coming out and pedal feels firm with engine off. With engine on, I lose all pressure. I've been bleeding my system all weekend. Still no pressure. Did a booster check and it seems fine.

What could be a problem since I've been bleeding all weekend and with engine on as pedal is pressed a hear a whoosh of air and I hear it again as I open the bleed valve.

Please help I want my taco back up and running and test out my new e locker axle.

 

Do you have ABS?

 

Yes. It's a 05 Tacoma 5 lug.

 

You most likely got air in the ABS valve. You need to look up the procedure on how to get the air out of that. Its not like the old days when you could just take everything apart and bleed, if you get air in the ABS its going to cause you issues similar to what you have. There are many ABS related threads on here.

 

Thank you. I'll search it.