Toyota 4 Runner Brakes

mike53

New member
hey no input have you stupmped well here is some more went back to it agian the owner stopped last night and we bled brakes the old way pumping up oh buy the way i found a leak above the shock bracket filled with dirt fluid finally seeped so i could find it by accident replaced lines from mid section to hose and both cyls any way bled system no pedal brake light came on why no prop valve this morning went out had one quarter pedal no brake light on the dash had this happen before air began gravity bleeding no air now no pedal again used one man bleeder on system nothing at all went over all connections tight tried bleeding the abs nothing seems to make a differance nobody here has any input? is there a site on here that will take you to toyota tech assistance? im pullin what ive got left of my hair none of this makes any sense im begining to think its in the abs because of the fluid loss in the system been there done that before but this takes the case of beer!


**vehicle was brouht to me with no brake fluid in master cyl looked over no leaks but found calipers froze hoses cracked rear shoes not making contact no leaks replaced calipers hoses and master cyl no leaks at master also pedal stiff then fades to the floor pressure bled gravity bled no brakes went to dealer not any help cant find any load sensing valve brakes adjusted no weak wheel cyls bled good clean fluid booster dry where did fluid go and whats up with no pedal any body out there got an idea
 
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hey no input have you stupmped well here is some more went back to it agian the owner stopped last night and we bled brakes the old way pumping up oh buy the way i found a leak above the shock bracket filled with dirt fluid finally seeped so i could find it by accident replaced lines from mid section to hose and both cyls any way bled system no pedal brake light came on why no prop valve this morning went out had one quarter pedal no brake light on the dash had this happen before air began gravity bleeding no air now no pedal again used one man bleeder on system nothing at all went over all connections tight tried bleeding the abs nothing seems to make a differance nobody here has any input? is there a site on here that will take you to toyota tech assistance? im pullin what ive got left of my hair none of this makes any sense im begining to think its in the abs because of the fluid loss in the system been there done that before but this takes the case of beer!


**vehicle was brouht to me with no brake fluid in master cyl looked over no leaks but found calipers froze hoses cracked rear shoes not making contact no leaks replaced calipers hoses and master cyl no leaks at master also pedal stiff then fades to the floor pressure bled gravity bled no brakes went to dealer not any help cant find any load sensing valve brakes adjusted no weak wheel cyls bled good clean fluid booster dry where did fluid go and whats up with no pedal any body out there got an idea

I see you went to public school.:wow:
 
Hey! No input. . . have you stumped? Well here is some more: went back to it again. The owner stopped [by] last night and we bled brakes the old way, pumping up. Oh by the way, I found a leak above the shock bracket filled with dirt. Fluid finally seeped so i could find it by accident. Replaced lines from mid section to hose and both cyls. Anyway, bled system, no pedal, brake light came on. Why? No prop valve? this morning, went out [and] had one quarter pedal, no brake light on the dash. Had this happen before: air began, gravity bleeding, no air. Now no pedal again, used one man bleeder on system, nothing at all. Went over all connections tight, tried bleeding the abs, [but] nothing seems to make a differance. Nobody here has any input? Is there a site on here that will take you to toyota tech assistance? I'm pullin what ive got left of my hair! None of this makes any sense! I'm begining to think its in the abs because of the fluid loss in the system. Been there, done that before, but this takes the case of beer!


Ok, I think this is just about right. So it sounds like air keeps getting introduced into the brake system but the cause is unknown.
 
**Vehicle was brought to me with no brake fluid in master cyl. looked over, no leaks, but found calipers froze, hoses cracked, rear shoes not making contact. No leaks, replaced calipers, hoses, and master cyl. No leaks at master, also pedal stiff [and] then fades to the floor. Pressure bled, gravity bled, [but] no brakes. went to [the] dealer [and] [they] [were] not any help. Cant find any load sensing valve, brakes adjusted, no weak wheel cyls, bled good [and] clean fluid, booster dry. Where did fluid go and whats up with no pedal? Anybody out there got an idea?


Round 2. This was the initial post and issue(s).
 
I can barely comprehend. With all that he/she typed, there's not one period nor comma but a question mark and exclamation mark.
 
Did you move his other post? That one was for a '96. He mentioned not being able to find a proportioning valve (I think) and I believe all the 3rd gens have the LSPB valve.


No not all. My 2000 had the PV built into the master cylinder as a part of the anti lock brake system. But I removed the whole system and installed Disc's in the rear and Master cylinder from a 76 Chevy Blazer. Also installed 2psi residual valve to the rear. No more PV at all.
I think that all 3rd gens without anti lock brakes did come with the LSPV.
 

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