driving to school i hit a yellow light. as i started to stop i heard a pop and my break pedal went all the way to the floor as the light turned red. i was doing like 30 and i hit my E brake, but nothing happened, so i started to down shift until i made it to a parking lot and when i was slow enough, i threw it into park to stop it completely. looked under the truck and there was no leak, poped the hood and my resevoir was full. started my truck again and pumped the brakes a couple times and nothing. looked back under the truck and had a break fluid leak behind my rear passenger tire. ended up missing class and having to tow my truck home.
any ideas of what could have happened?
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2008 5.7 RCSB Tundra: Sport Appearance Package, Toyota Carved 20" rims, McGaughy's 2/4 drop kit, Blacked out tail lights, Magnaflow dual exhaust, Volant CAI.
crazy story, glad you used your head and made it out ok
Really though... Did you hit something earlier or run over a curb hard? Maybe a tree root? Is your truck body lifted? Maybe the brake lines were too short and finally gave? Other than a mechanical catastrophe, it had to be some type of interference.
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My Truck: 2005 Tundra, 2UZFE. 4WD. AccessCab. Spectra Blue Mica (8M6). TRD. AT. CC. CK. DZ. FE. AW. LD. OF. TO. VP.
I'd check that EBrake line immediately. It sounds like your Ebrake line frayed and came loose over time and snapped from fatigue. How many miles do you have on that tundra anyway?
i have 104k miles. i remember hitting a curb kinda hard because a car exiting the driveway decided to take up both lanes, but i didnt think anything of it. a friend of mine was suggesting that maybe my drum break wore down so much the piston came out leaking fluid. the leak was coming from the wheel, and not from any lines, that i can see anyways.
ill find out for sure sat. im gonna check it out first instead of taking it in. let u guys know what happened.
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2008 5.7 RCSB Tundra: Sport Appearance Package, Toyota Carved 20" rims, McGaughy's 2/4 drop kit, Blacked out tail lights, Magnaflow dual exhaust, Volant CAI.
I think your friend may be right, if the park brake isn't working sounds like the shoes may be worn away. Have you been hearing any grinding noise previously to this? It's sometimes hard to hear from the rear of a truck. If the shoe are worn into the metal a wheel cylinder piston could easily pop out, or maybe it just blew a seal. Look under your truck, if the backing plate and the back of your wheel is wet then a wheel cylinder let go.
About your loss of braking, I would hope this is an exaggeration. All brake systems from 1967 are a split system. Though you probably lost all the fluid pressure on the rear circuit you still have the fronts to stop on. The pedal will likely be very low, almost on the floor but you should be able to stop on the front brakes. If this is not the case then you have some pretty serious brake issue and shouldn't be driving this vehicle. A total loss of brakes on a modern vehicle is highly unlikely if the brakes have been properly maintained.
Mike
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“The significant problems we have cannot be solved at the same level of thinking with which we created them” (Albert Einstein) Moderator Brake Forum
I think your friend may be right, if the park brake isn't working sounds like the shoes may be worn away. Have you been hearing any grinding noise previously to this? It's sometimes hard to hear from the rear of a truck. If the shoe are worn into the metal a wheel cylinder piston could easily pop out, or maybe it just blew a seal. Look under your truck, if the backing plate and the back of your wheel is wet then a wheel cylinder let go.
About your loss of braking, I would hope this is an exaggeration. All brake systems from 1967 are a split system. Though you probably lost all the fluid pressure on the rear circuit you still have the fronts to stop on. The pedal will likely be very low, almost on the floor but you should be able to stop on the front brakes. If this is not the case then you have some pretty serious brake issue and shouldn't be driving this vehicle. A total loss of brakes on a modern vehicle is highly unlikely if the brakes have been properly maintained.
Mike
my dad was saying the exact same thing, but it wasnt an exageration. i lost all my breaks. but the leak was coming from the back. im not driving it right now, obviously, but im gonna take a look at it sat.
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2008 5.7 RCSB Tundra: Sport Appearance Package, Toyota Carved 20" rims, McGaughy's 2/4 drop kit, Blacked out tail lights, Magnaflow dual exhaust, Volant CAI.
About your loss of braking, I would hope this is an exaggeration. All brake systems from 1967 are a split system. Though you probably lost all the fluid pressure on the rear circuit you still have the fronts to stop on. The pedal will likely be very low, almost on the floor but you should be able to stop on the front brakes. If this is not the case then you have some pretty serious brake issue and shouldn't be driving this vehicle. A total loss of brakes on a modern vehicle is highly unlikely if the brakes have been properly maintained.
Mike
That's what I was going to mention. There's really no reason you shouldn't have had adequate braking even with the rears out of commission. So if you're ever wanting to off someone, make sure you cut both a front and rear line.
If a drum cylinder were to have popped then you would've lost hydraulic pressure from the entire system. If you were to have had time to pump the pedal a few times then you wouldn't been able to build pressure for the fronts but that wasn't the case. I remember a similar situation for me as i was driving home after skiing in my old Chevy. I heard an odd scrapping sound while backing up, stopped and checked everything but didn't see anything abnormal. Well, first time i stepped on the brake pedal to slow for a corner the pedal went right to the floor, which was a little surprising. A few pumps of a pedal and things were back to normal. Brought it to my mechanic the next day and explained the situation which he thought was odd also. Turned out 1 of the lining came off the backing plate of the pads from rust and got kicked out. That's was the rubbing noise when it just got dislodged. The pedal went to the floor since the caliper needed to expand to build pressure but after pressure was built, braking seemed normal. Crazy stuff happens.
my breaks went out
mods to date: K&N 77 series CAI, TRD Headers, Borla Muffler Dumped, Gaylord's Fiberglass Tonneau , SOS 2"/4" drop kit, Helo 20" Wheels, Hankook 275/40/20 Tires, debadged, removed pinstriping, a crap load of neon/led lighting, Kicker KS 6.5" & DS 5.25" components, custom center console/seat, 5% tint in rear & 35% in front
Anyway, good thing you weren't driving down this road!!!!
(nice catch)
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