Break problems advice. (1 Viewer)

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I have everything bled. Did pretty much what you said but did not disconnect the LSPV. I will give that a try. Are there any videos online that show you how?
Not that I know of.
Pretty straight forward. Remove one bolt from the pivot on the rear axle and the use wire or bungee to hold it in the highest position possible.

Two man bleeding, pressure bleeder, or vacuum pump bleed?
 
It was not the Booster. Fun installing that thing twice. If I did not see proof on a video, I would not believe there is a way to work that thing out of there.
Well....poop.
LSVP bleeding: There's nothing magical, the bleeder is on top and it works like the one at the wheels.
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Thank you all for the help I really do appreciate it!!
I just bled the brakes again in the pattern that was described. I did get a little bit more air out, so I'm glad I did it. At this point, I'm out of brake fluid :). It has slightly improved, but I can still tell that's not the "problem". I'm guessing it probably has something mechanical in the calipers. The first time I bled the system, I did get a lot of trash out of the line and a couple of bleeders were clogged. I am guessing thats not a good sign.
 
Pls refresh my memory. Did you change the soft lines too?
 
Not yet. I checked for ballooning and did. It see any.
If you got black crud out of the lines, I'll bet you have a caliper or three hanging up.
 
If you got black crud out of the lines, I'll bet you have a caliper or three hanging up.
That's what was I thinking as well.
 
What is the latest?
Also how did you activate the abs with battery?
 
Update:
Been waiting for some parts, but I took a little bit of time this afternoon and took apart one of the brake assemblies in the back.

On the right rear, one pad had normal wear the other one was completely gone, so I’m guessing that was a sign of a sticking caliper?

Plan going forward:
I was able to use one of the old brake pads from my 4runner to get me by a few days….
I’ve ordered a brand new set of brake pads and I’m going to get four remanufactured brake calibers and install all that hopefully this weekend or next week.
The ones on there look really beat up and rusted.
 
Update:
Been waiting for some parts, but I took a little bit of time this afternoon and took apart one of the brake assemblies in the back.

On the right rear, one pad had normal wear the other one was completely gone, so I’m guessing that was a sign of a sticking caliper?

Plan going forward:
I was able to use one of the old brake pads from my 4runner to get me by a few days….
I’ve ordered a brand new set of brake pads and I’m going to get four remanufactured brake calibers and install all that hopefully this weekend or next week.
The ones on there look really beat up and rusted.
I have fought rear brake calipers hanging up for years. I had been using the NAPA remans as well the Cardone from O'Reilly's.

I finally bought NEW calipers from Toyota and my rear brake dragging is gone. I get 2 mpg better now too.
 
I have fought rear brake calipers hanging up for years. I had been using the NAPA remans as well the Cardone from O'Reilly's.

I finally bought NEW calipers from Toyota and my rear brake dragging is gone. I get 2 mpg better now too.
Unfortunately, I don’t have the budget for new calipers. I was either gonna get the ones from O’Reillys or the ones from advanced auto parts. Did you find one better than the other?
 
Unfortunately, I don’t have the budget for new calipers. I was either gonna get the ones from O’Reillys or the ones from advanced auto parts. Did you find one better than the other?
No, they both equally sucked.
 
Unfortunately, I don’t have the budget for new calipers. I was either gonna get the ones from O’Reillys or the ones from advanced auto parts. Did you find one better than the other?
Rebuild your calipers yourself. The kit is way cheaper than a new caliper. The procedure is in the brake section of the FSM.

You stated you "got most of the air out". You have to get all of the air out of the system, or you will not have brakes that work as designed. There is no "almost good enough".

FWIW, I have three 80s. All three have brakes that work in varying degrees. My DD works like it did when it was new. I have had it long enough to know. The other two have mushy brakes; not "Oh no, I can't stop" mushy, but not "put your face on the dash" new. I have replaced everything on one of them, except the ABS module and hardlines, and fittings on them, and I have never been able to bleed all the air out of the system, through several full system fluid flushes. There is a leak in there somewhere. Until I find it, and plug it, those brakes will never be as good as my DD.
 
Rebuild your calipers yourself. The kit is way cheaper than a new caliper. The procedure is in the brake section of the FSM.

You stated you "got most of the air out". You have to get all of the air out of the system, or you will not have brakes that work as designed. There is no "almost good enough".

FWIW, I have three 80s. All three have brakes that work in varying degrees. My DD works like it did when it was new. I have had it long enough to know. The other two have mushy brakes; not "Oh no, I can't stop" mushy, but not "put your face on the dash" new. I have replaced everything on one of them, except the ABS module and hardlines, and fittings on them, and I have never been able to bleed all the air out of the system, through several full system fluid flushes. There is a leak in there somewhere. Until I find it, and plug it, those brakes will never be as good as my DD.
I looked into rebuilding them myself, but it needed all new bolts on it and pretty much every fitting on the calipers was totally rusted out when you add up the cost for each caliper. It was more than just buying the rebuilt ones.

As far as bleeding the system, I get what you’re saying totally; my point was you can tell you fix the problem before you’ve bled the system 100%. At least in my case.
If this doesn’t work, I’m gonna replace the soft lines and then the proportion valve.
 
I looked into rebuilding them myself, but it needed all new bolts on it and pretty much every fitting on the calipers was totally rusted out when you add up the cost for each caliper. It was more than just buying the rebuilt ones.

As far as bleeding the system, I get what you’re saying totally; my point was you can tell you fix the problem before you’ve bled the system 100%. At least in my case.
If this doesn’t work, I’m gonna replace the soft lines and then the proportion valve.
IMO, the very first thing on my list would have been replacing the 7 28 year old soft brake lines.
Followed closely by rebuilding/replacing all 4 calipers.
 
That was my plan, too. Absolutely the way to approach the job.
 
I looked into rebuilding them myself, but it needed all new bolts on it and pretty much every fitting on the calipers was totally rusted out when you add up the cost for each caliper. It was more than just buying the rebuilt ones.

As far as bleeding the system, I get what you’re saying totally; my point was you can tell you fix the problem before you’ve bled the system 100%. At least in my case.
If this doesn’t work, I’m gonna replace the soft lines and then the proportion valve.
Front brake caliper, 2 each required:
1726085280838.png

Pistons (if required, usually not); 4 each caliper required:
1726085529425.png


Rear brake caliper, 2 each required:
1726085359697.png


Pistons (1 each caliper required, usually not):
1726085424507.png

and just for grins:
1726085938815.png

This fits the LSBPV also. New valves come with a screw installed.

No bolts, screws or nuts required. You are not supposed to take the front caliper halves apart when you rebuild them, and the rear is one piece. If you need sliding pins for the rear:
47715-22010 @ $13.59 each (2 required, per caliper)
The front caliper pins come in the brake disc set.

If you remove the front caliper using the caliper mounting bolts (you are not supposed to do it that way), you should replace them when you remove them (if you're like me and follow the FSM recommendations for non-reusable parts). If, however, you follow the FSM and take the reaction arm off the caliper body, you do not have to install new bolts. If you replace them once, and keep the underside reasonably clean, they should last your lifetime.

So, rebuilding just the two rear calipers, less pistons, = $27.64, plus tax and shipping.

No way this is a wash with the price of just one caliper. A little more for the front, but same cost comparison.

All prices are courtesy of Ourisman Toyota of Richmond, VA.
 
Front brake caliper, 2 each required:
View attachment 3724063
Pistons (if required, usually not); 4 each caliper required:
View attachment 3724069

Rear brake caliper, 2 each required:
View attachment 3724065

Pistons (1 each caliper required, usually not):
View attachment 3724066
and just for grins:
View attachment 3724070
This fits the LSBPV also. New valves come with a screw installed.

No bolts, screws or nuts required. You are not supposed to take the front caliper halves apart when you rebuild them, and the rear is one piece. If you need sliding pins for the rear:
47715-22010 @ $13.59 each (2 required, per caliper)
The front caliper pins come in the brake disc set.

If you remove the front caliper using the caliper mounting bolts (you are not supposed to do it that way), you should replace them when you remove them (if you're like me and follow the FSM recommendations for non-reusable parts). If, however, you follow the FSM and take the reaction arm off the caliper body, you do not have to install new bolts. If you replace them once, and keep the underside reasonably clean, they should last your lifetime.

So, rebuilding just the two rear calipers, less pistons, = $27.64, plus tax and shipping.

No way this is a wash with the price of just one caliper. A little more for the front, but same cost comparison.

All prices are courtesy of Ourisman Toyota of Richmond,
Front brake caliper, 2 each required:
View attachment 3724063
Pistons (if required, usually not); 4 each caliper required:
View attachment 3724069

Rear brake caliper, 2 each required:
View attachment 3724065

Pistons (1 each caliper required, usually not):
View attachment 3724066
and just for grins:
View attachment 3724070
This fits the LSBPV also. New valves come with a screw installed.

No bolts, screws or nuts required. You are not supposed to take the front caliper halves apart when you rebuild them, and the rear is one piece. If you need sliding pins for the rear:
47715-22010 @ $13.59 each (2 required, per caliper)
The front caliper pins come in the brake disc set.

If you remove the front caliper using the caliper mounting bolts (you are not supposed to do it that way), you should replace them when you remove them (if you're like me and follow the FSM recommendations for non-reusable parts). If, however, you follow the FSM and take the reaction arm off the caliper body, you do not have to install new bolts. If you replace them once, and keep the underside reasonably clean, they should last your lifetime.

So, rebuilding just the two rear calipers, less pistons, = $27.64, plus tax and shipping.

No way this is a wash with the price of just one caliper. A little more for the front, but same cost comparison.

All prices are courtesy of Ourisman Toyota of Richmond, VA.
I need to replace all four calipers since they’re rusted and pitted, especially in the front. I don't think your math works out though, because when I priced it online, it looked like it would cost more to rebuild all four. What’s the real benefit of going this route? To me, it feels like I’d be spending an extra day getting filthy, drilling, and tapping into these severely rusted calipers. They’re in rough shape—rusted pins, stripped hex bolts, the whole deal. I’m open to your ideas if there’s a strong reason to do it, but right now, it seems like a lot of time and money for not much return.
 
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I just read the entire thread.

I know you can't get rid of the ABS however I would recommend replacing the LSPV with a T fitting. They are cheap. This will eliminate a potential problem point. My LSPV was rotten on the inside and I was glad to get rid of it.

Like others I would have thought the booster would have been the fix.

However, you could test your caliper pistons by removing the caliper from the rotor, removing the pads, and pressing the brakes. A stuck caliper isn't going to move. I would recommend sticking a something in there to keep the piston from fully extending and falling out.

I didn't see it but do you have mushy brakes or just a very firm pedal with no stopping power? You could have a pinched hardline that isn't allowing fluid to the calipers. The front brakes have two separate lines that come off the T under the MC. The rear brakes run all the way to the rear axle before the line splits into left and right.
 

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