LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

No Back Brakes!!!!!!!

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Old 01-23-2003, 07:47 PM
  #16  
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ME too I cant hold my car with the EBRAKE either at idle ..just slow it down some but not stop it......

You say u adjusted them.........How do u do that I have no Idea how to adjust mine!

I also bled my brakes once....then picked up the manual and bled the ABS, Rightrear, Leftrear, right front, left front....and again the ABS......still no back brakes...

I noticed a black allen looking thing in the center of the piston but I was too chiken to **** with it..

Is that how u adjust these things? Im tempted to make some sheetmetal shims
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Old 01-23-2003, 07:52 PM
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and oh yeah I gotta ad....no I machined the rotors but they still have enough material left to be legal .....the brakes do work....kinda not really just barely work....so the calipers probably not stuck....Its gotta be either an adjustment I dont know about or the combination valve is ****ed...I also unplugged the relay to the ABS to see what that did...nothing...Im sick of this damnit I want normal brakes!
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Old 01-23-2003, 09:44 PM
  #18  
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Well I have the same thing going on. When I am stopped on the snow (or wet garage) the back tire(s) spin when I am stopped. I haven't had time to look at them. My ebrake doesn't work either. I was assuming a stuck caliper, but ......

Does anyone know if the adjustment of the ebrake, ie how far the pads are away from the disk so the ebrake works properly, has anything to do with back brake application? Or am I just way off on all of this?
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Old 01-23-2003, 10:00 PM
  #19  
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Are the rotors tapered?

Is the completepad touching the rotor?

You should not have any rust spots on the face of the rotor. If you do then the pad is not contacting as it should. That is the problem I am having right now. I believe it is the caliper pins that are not allowing the caliper move as they should and is causing my rotors to taper to the outside.
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Old 01-23-2003, 10:13 PM
  #20  
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like I said I just machined the rotors and got brand new pads...the piston moves and the caliper slides....
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Old 01-23-2003, 10:18 PM
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I'm wondering, usually when the brakes is going out..you'd hear the loud screaky noise correct? If so I have 53xxx miles on my car and the brake rotors/brake pads is original.
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Old 01-23-2003, 10:20 PM
  #22  
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I guarantee youre problem will be solved if you got brand new rotors that are thicker.
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Old 01-23-2003, 10:20 PM
  #23  
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No noise as of yet...recently a while back I got the brake pads checked out and the tech said they still look brand new
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Old 01-23-2003, 10:43 PM
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Are the back brakes adjustable???

I cant find out how to adjust mine....
If I do anything im not buying new rotors the old ones are fine they have been machined......are legal thickness, no runout, not taper..I will try shimming the pads but I bet it wont work
its like the brakes are applying but very weak is what I mean...cuase it does work a bit but just barely and with new pads they act exaclty the same
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Old 01-23-2003, 11:33 PM
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There is a procedure for adjusting the parking brake free travel and you can find it here. Normally, you should not have to mess with it and note that it says you should only do it when new pads are installed. The reason for that is, if you turn the allen adjuster in to compensate for worn pads, then when the pads are replaced, the adjuster will probably not let the piston retract far enough for you to get the caliper back on over the rotor.
IMO, the problem probably lies elsewhere and you can leave it alone.

One thing that you might check, is the pivoting point of the lever (5 in the diagram). That might be sticking and making you feel like the parking brake is applied when it is not really pushing on the pad.

Note that is for the parking brake not working and won't likely apply to the original posting of the rear brake not working by pressing the brake pedal. I just brought this up because of what I read further into the thread.
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Old 01-23-2003, 11:51 PM
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holy crap there! You got a whole repair manual on your site! lol thanks a bunch
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Old 01-24-2003, 12:57 AM
  #27  
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I burned my back brakes right off at the Drag Strip. I need some line lock
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Old 01-24-2003, 08:13 AM
  #28  
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ooh boy lemme try my new signature!
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