askingxforxit

hey guys. I'm new to this forum but not new to the forum world. I've searched and came up empty.

When the breaks are cold they lock up. It doesn't matter if I'm driving at normal street speeds or pulling a three point turn on my residential street or in a parking lot. I inspected the rotors and pads and all seem good. I even bought new rotors and pads to change everything but once I got a good look and matched everything up it all looked identical so I returned all the new parts.

What would cause this? Any positive feed back it greatly appreciated. Thanks in advance guys.


EDIT: by cold im talking Southern California cold, not Green Bay cold this started happening towards the end of summer so I'm not taking the weather in to account for this problem.

rangerone

my rear brakes like to lock up on me first thing in the mornings. if i pump them a few times before i take off, it prevents it from happening. i haven't had a chance to go find out why it's doing this.

askingxforxit

that would lead me to believe it could be the master cylinder or calipers :/

phoenix901223

drums lock up when its wet outside, happens to mine, my buddies xj my other buddies ranger, its just a drum thing.

askingxforxit

this whole time I was thinking it was the front discs. hmmm...so rear drums probably need some work??

ifixit8

yeah the rear drums can lock up. if the locking up is quick and jerks its from the rear. I have an axle seal that is shot on the passenger side and that 1 is always locking up!! i know I need to replace that... but I'd check your rears for sure.

phoenix901223

you will be able to feel where its locking. Ever ride a bike and squeeze the front? its most of your stopping power and you can feel yourself about to tip if you do it too hard, but if you lock up rear wheel you will do fishtail skidouts, same thing with the car, the front brakes stopping will be really abrupt and u will wanna fall forward, the rears will do the same with a much less falling effect. And the drums you can hear, you hear that BANG in the rear

askingxforxit

Ugh, thats not something im looking forward too but it NEEDS to be done.

phoenix901223

does it do it the whole trip?

Usually it does it once or twice than goes away thats why no one bothers to do nothin about it.

rainy days its a lock out of reverse from the driveway, and than one more lock at the stop sign a couple yards down than its done with that nonsense

askingxforxit

Yeah it only does it when I havent driven for a few hours not matter what weather conditions. After driving for a few minutes it goes away.

ifixit8

I had that happen at a stop sign in my old subdivision so bad the rears locked and the guy in front of his garage gave me a nasty stare, like I was roasting the tires or something

phoenix901223

hmm if it does it whenever, than its not the typical wet drum lock, bad cylinders if its the rear or bad calis up front. or maybe a super duper brake booster

phoenix901223

My parents are moving into some rich area like that, there gonna hate me coming by with my blacked out dirty box screamingggggg with the flow 10

And the new 10's in the rear lol

KD3NE

I just had my rear brakes redone - EVERYTHING replaced.

Man the BANG was horrendous, sound and sometimes felt like I hit something and there was nothing on the road.

Took it to a shop, they pulled the wheels and I told them what to do....

Wheel Cylinders
Shoes
Hardware
Drums

The hold nine yards.

I am happy now .... no more BANGING! ( least not under the jeep in the rear )

phoenix901223

haha i like it, it wakes me up in the morning, scares the **** out of me when im snoozin on the wheel at 6am