Background: right rear brake was squealing. I replaced both sets of pads, rotors looked and felt fine. When I took it for a test drive the left brake was smoking. The caliper piston froze up on me so I replaced the caliper. Bled the line multiple times.

Driving it for 2 days after I felt like the brake pedal went to the floor way too easy...made me feel nervous. My wife wasn't comfortable with it so I decided to take it to my mechanic the next day.

On day 3 the brakes felt much better but still a tad spongy. To appease her I took it to my guy anyway who said the brakes feel fine.

Again, the wife isn't comfortable so I had my guy bleed the brakes. In doing so he discovered the the RR bleeder valve won't budge so he only bled 3 of the 4 brakes.

With all of that said the brakes feel no better than before he bled them.

Any thoughts would be greatly appreciated.

 

Well you cannot properly bleed a four caliper system by only bleeding three.
Was that the caliper that was replaced?

Your 'mechanic' is a hack. Bleeding 3/4 of the brakes knowing something is faulty and giving it back to you? That's unconsciousable.

"Here your brakes are only 75% working... maybe."

If the bleeder is seized, or stripped it needs to be fixed. If it is that badly corroded other components may also need to be addressed.

 

Here's a tip I get from Ericthecar's youtube channel.

If after you've bled the brakes and everything and the brake pedal is still spongy, what you can do to harden it up is go out on some isolated road accellerate and then step on the brakes hard.

I don't know why this works, but it hardens the brakes up.

Sorry, too lazy to look for the YT link.