I posted a while back about my brakes being spongy. I've tried a lot of different solutions to no avail.
I bought my 07 Mazda 3 around 7 months ago. They told me about the spongy breaks, and said they'd most likely need bleeding (silly me). I bled my brakes from the furthest away from the master cylinder and made my way closer to the master cylinder. After that, still very spongy. So I took it in to a shop, so they bled the brakes. Still the same and said it was the master cylinder that needs replacing. So, I replaced it, bled the brakes and still the same. Making sure I didn't do it wrong, I took it in and got them to bleed the brakes. And, it's still very spongy. They looked around the calipers for any leaks, and I looked in the hood at the brake lines and there isn't any leaks. There are definitely no leaks. I do know that if the calipers are on the wrong way, that could cause air to be stuck in the lines, but they're the right way.
Also, when I press my pedal, I hear this whOOOoooo sound.
I've looked online and I've seen a few stories about Ford and Mazda having a valve getting stuck in the ABS pump. Is this most likely the problem? I feel like I'm going around in circles because I've literally tried everything.
Thanks for viewing!