Brake System Nightmare: Nothing Works

[Guest]

Hey guys, I have had brake problems with my car since I got it. The brakes are very loud. Another problem they had was under heavy braking or turns, they mad a very rhythmic scrape noise ever rotation of the wheel. I heard due to the shakiness at the time that it was probably the rotors where warped. I just replaced the rotors and pads, and saw a problem with a caliper and replaced it with a spare I had. Now, the shakiness is gone, but during normal driving, the scrape occurs nonstop until you put on the brakes, the brakes operate smoothly, just make a scrape noise. Its not pads. Not rotors, and not the caliper, since they have all been changed and the noise is still there. It makes me think its the suspension, since it does seem to be affected by turns. I am trying to sell my car, and any help is greatly appreciated. Thanks,
John

[Dan Vincent]

Check out your critical suspension components - Tie-rods and ends, balljoints, et cetera. Most of the time front-end noise originates from one of these components when they're worn and need to be replaced.

[Ian]

wheel bearing? when you take the calipers off and spin the rotor, do you remember the scraping noise then?

[Guest]

The noise is the brake pads scraping rotors, I just dont know why.

[Guest]

Okay, checked the wheel bearing, it is good.

[silvachris1]

The caliper pins might need to be removed, cleaned of all rust/debris and then greased. Sometimes they freeze up, and it's pretty easy to fix. Even if you had a spare one laying around, it still could have the same problem.

[Guest]

They slide in and out fine. But I really and running out of options, so I'll do anything. What grease should I put back on them? Thanks for the reply.

[silvachris1]

I don't remember if I used White Lithium grease, or if I just used some anti-seeze stuff.

[Guest]

TTT. Some updated Info:

The Problem:
My cars front drivers brake makes a continous scrape noise every rotation. The noise used to occur only on heavy stops and with the wheels turned a certain direction. I thought the rotors where warped, so replaced them and new pads. The noise was quieter, but now it would occur nonstop when driving, and go away under braking. I replaced the caliper, noticing the guide pins where seized to no avail.

Update:
I replaced the pads with the original pads (so original pads, new rotors) and the noise is still present, just not as loud. I regreased the caliper guide pins and torqued down the brake parts and wheel correctly. I did notice the brake pad wasnt too firm in the car, I had to pump it twice to firm it up, but then it felt fine. Could this have some effect?

So I have ruled out the pads, the rotors, the caliper, the wheel bearings felt firm, the caliper mounting bracket was swapped as well, its not believed to be at fault. I am getting desperate, it feels like I wil never be able to drive this thing....Thanks,
John