So coming down my street today, my 02 disco ii felt like it was rolling with the emergency break on. It even had me feeling like my breaks were giving out. I barely could stop without pressing hard on the pedal...I'm assuming abs was doing its job. When I parked her, smoke was coming from the front passenger side tire, the rear drivers side tire, and there's an oily gunk built up inside the rear tire rim. Someone said it was brake fluid and that my calipers done...I am not losing brake fluid but the fluid is brown and thin. For a week I've noticed in the mornings, my pedal is light. Like I'd have to press it close to the floor to stop, but as it warmed up it felt normal. My abs modulator under the hood is making a funny noise too...even after truck is off and setting a while...did I mention I slight whistle/wine sound occurred this morning from beneath her. Good thing I didn't get on the expressway as I typically do. Ohhhh! About the expressway, 'tween 70-80, she hums and vibrates a bit under my feet.... Shew! Where would you guys start? I'm gjacking her up in the morning and need to at least order parts to get her safely mobile, then taking her in to a good mechanic I known for some maintenance

 

Calipers must be going. But not familiar with the whistle noise. Mine started from a small leak and suddenly it squirted all the fluid and no brakes at all.

 

Should I do all 4? What else should I do while doing this repair....1 person said hubs, another said calipers as you did....actually I got a 2 out of 3 on calipers.

 

Mine was just one assembly. Not all. It was the caliper piston that leaked.

 

Better to check your brake pads and rotors as well. Sometimes when you apply brakes from around 30-45mph from a higher speed, you will feel vibration, this happens when some pistons are stuck and not evenly applying pressure to the pads. Same as when a rotor is warped.

 

On the drivers rear wheel, the oily gunk could be gear oil coming from the hub o-ring or axle seal. Mine was leaking form the o-ring.

Sounds like the pass front caliper is frozen. If it was your DII should have been pulling to the right when driving. with the DII jacked up, try spinning the wheel and compare it to the other side.

 

The gunk is in the pass rear tire....I noticed it did pull to right upon braking recently

 

Did you have smoke coming from both front passenger side and the rear drivers side?

Pull when wheel with the gunk. Look at the inside of the rotor hat. If there is oil there then you have a hub leak.

 

Yes....both wheels....gunk is all over that one wheel rim on the back pass wheel and my brakes when braking going forward won't stop me, if I put her in reverse, I can stop

 

My abs modulator under hood is ticking, even now with car off