New Brakes = Problems

[Jacob Dryer]

Yesterday I bought and installed new carbon pads and some rotors on the front. Put it all back together and I had pedal vibration (almost like the antilock was kicking in) so I pull the rears apart and had the drums turned. (pads still in good shape)



I double checked the torque on the bearings and that is fine (on the front)



My first plan when I head out this morning is to apply the parking brake to figure out if the issue is front or back.



I don't think I hit any of the abs stuff when I was working but also plan to check that..



any other thoughts? Garage on base opens in 1 hr :wacko:

 

[Todd Z]

Since your 2wd, I almost bet the abs ring on the rotor is the wrong one....



IF the pedal pumps, it could be the rear drums...



YOU also can take out the ABS fuse and try that test...



Todd Z

 

[Tom Schindler]

Did you clean the dirt and dust off of the ABS sensor? What rotors did you use?





Tom

 

[Jacob Dryer]

OEM replacement rotors from the parts store on base, not sure what brand $50ish a peice.

I did clean the abs sensor.

 

[Tom Schindler]

Possibly cause by the tone rin, as Todd Z said, on the rotor. Common problem on cheap rotors.



You could pull one rotor and look at the ring. Make sure it looks like it is even all the way around.





Tom

 

[Dreman]

Check the new rotors for true. I had to take some back recently because they were not straight. The replacements seem to work fine, though.

 

[EddieS'04]

Rotors made in china. They have to much Lead in them,,

 

[Jacob Dryer]

Problem goes away with the ABS fuse removed.



Replaced one of the ABS sensors (pass front) drove around with a scanner hooked up and all the sensors are getting a reading now.



So that rules out warped rotors at least, and I'm pretty sure it rules out the tone ring right?

 

[Dreman]

Well, it should. But I'm assuming that even with the new sensor, the problem is still there, right?

 

[Jacob Dryer]

true problem still exsists.

 

[Tom Schindler]

Well, the tone ring could be the culpret. Put your old rotor back on and see if it still does it.





Tom

 

[David Jones 4]

I'm having a similar problem as JD



New rotors and brakes up front and when i hit the brakes at a certain point i get a bad rubbing and even lose brake pressure



Where is the ABS sensor located at?



I bleed the brakes too.

 

[Jacob Dryer]

The ABS sensor is the little metal circle behind the rotor. It has an 8mm bolt holding it in from the backside and about 4 foot of wiring connected to it.

 

[Kevin Palmer]

I have seen many here have that issue and it almost always come back to being the wrong rotors due to the ABS tone ring being wrong.

 

[Jacob Dryer]

I compared my old rotors to the new ones and it seems to be the same.. is there something that wouldn't be obvious?

 

[Todd Z]

JD it is not the rotor itself, IT is the reluctor ring on the BACK of the rotor. The new one could be smaller, larger, different spacing on the teeth, IT could be a bunch of things throwing it off..



Todd Z

 

[Jacob Dryer]

Sorry that is what I ment Todd, I compared the tone rings and they looked identical.

 

[David Jones 4]

JD, sounds like you and I are having the exact same issue.



What fuse is taken out and where? inside the truck or under the hood? I lost the diagram for what fuse is what.

 

[Jacob Dryer]

The fuse is under the hood.. On the first row there are 3 50 amp fuses, it's the middle one. with it removed the abs light is on (obviously since the abs isn't working)

 

[David Jones 4]

JD, thanks



did you try this option yet of removing and seeing if your problem still exists?