Brake Pedal goes to floor after shoe and cylinder change

I guess I'll bleed everything again methodically. Master, rear passenger, rear driver, valve thing, front passenger, front driver. More bad news today, I'm getting estimates from $120 to bleed the system at the dealer including the ABS to $700 at a specialty shop to put OEM parts and fix it right.

 

I go rear passenger, rear driver, bpv, front passenger and front driver. The rule of thumb I've been following is the furthest one 1st.

 

Rear passenger first is furthest from the master cylinder. I will do your way though since rear driver is furthest from ABS.

 

Front driver is further from the ABS pump than front passenger, as well.

 

Bled everything thoroughly in order and it did nothing. I am taking it to the dealership today, they said they would check it for free.

 

Here's what's going on:

The dealer took quite some time with it then called me out to take a look. They bled everything and said they got a good amount of air out. (I bled them this morning and got three pumps of pure fluid from every wheel but whatever) They deduced the problem is with the wheel cylinders. They pumped the brakes and showed me how the wheel cylinders didn't move at all. They have a lot of okay when the brakes aren't depressed as well. They said there is ample pressure at the lines so it has to be these at the wheel.

Also the drums themselves are turned to maximum. They wanted $850 for the new drums and cylinders. I had to decline. I paid $100 for them to bleed it thorougly, fix a parking brake issue and for diagnosing the problem.

The question now is what should I do? The AC delco cylinders are garbage so I'll get a refund for those. I thought about buying the oem part and doing it myself but doing it myself has been a royal disaster so far. I am worried that driving with the bad wheel cylinders is letting air into it. Obviously this whole ordeal has been far too expensive already..

 

Funny, I bled my rear and had the same thing BUT my pedal is stiff and not going all the way to the floor. I think another guy said his problem was the master, like a piston was fudged up or something.

 

Still have your stock wheel cylinders or are they toast/ leaking? Sometimes it's better to "fix" one thing at a time, not all at once, then it's easier to see what went wrong! I've done it myself, so don't feel bad!

 

The thought occurred to me to throw the old ones back on. I guess technically I didn't do anything wrong the first time except choosing cheapo parts. (They did say there was a ton of air in the system, maybe that's my doing, maybe its because the cylinders were letting air in.)

I'm still not 1000% convinced they are the problem. I've heard stories of how one part gets fixed and the problem is unchanged, hundreds of dollars later...But then again Toyota said the brake lines were "rock hard" right before they reach the wheel cylinders.

 

Just a story. Its kinda hard to explain why that story goes around but its best to keep up with maintenance. Not everybody is bawlin out of control to be able to afford a new car every 4 yrs, or less.

 

Fixed it.

Took out the junk AC Delco wheel cylinders and put the old ones back on. Bled the backs once and thoroughly (by myself no less) and the truck stops better than ever. A bit of squeaking but I suspect its because the shoes are brand new.

Now what I'm worried about is the AC Delco fuel filter I installed a few months ago...