Ford F-150 - 1997-2003 :: Pedal Lost Pressure When Slammed On Brakes - ABS Lights Went On
Dec 17, 2013
So the other day I slammed on the brakes when traffic came to a halt on the highway. As I slammed down on the pedal, all the sudden the pedal lost pressure and went nearly to the floor, but firmed up just before bottoming out. My brake and ABS lights went on as well. Someone told me there is some kind of failsafe that blocks off the line if it ruptures, so maybe thats what happened? The brakes seem to work fine and are not loosing any more fluid, but the warning lights remain and the taillights do not light up.
So when I got home I took a look. On the fender side under the fuse box there was a lot of brake fluid, and looked like the line going from the master cylinder down to some kind of module (abs thingy?) below it was all rusted.
Today I replaced the line, and bleed the rear brakes. There did appear to be a ponhole in it, right where it would have been spraying the fender side where I saw all the fluid. The pedal is very firm right from the get go and brakes seem to be working fine. However the brake and ABS light remain, and my brake lights still dont come on when I press the pedal. Do I still have a leak somewhere or is there something else I have to do to clear the warnings and get my lights back?
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Last Tuesday my 2012 Prius C brake system failed while I was driving to work. Multiple emergency lights popped on and the brakes lost pressure. I got it towed to the nearest Toyota dealership. That same Tuesday I was told it would cost $3,200 to fix the brake booster. The car has 114,000 miles on it and I have done regular maintenance throughout.
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I have a 97 F-150 with just over 300,000 miles. I lost all oil pressure and know I need to replace the main bearings. Must I pull the engine to do so?
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The brake lights come on in the rear after i park the car. it appears the brake pedal is not springing back for enough to disengage the brake lights. It does not do this all the time, but seems to have start doing this at night when it gets colder. I can look outside and see my brake lights on, then go off, then come back on. It has made the battery go dead twice in the last week. is this a easy fix or something more complicated. this has nothing to do with parking brake, i normally do engage parking brake since i park on a flat surface road in front of my home.
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The problem occurs when you hit bumps while braking, or if you get on the brakes to hard. It seems like the brakes lose pressure entirely and the pedal goes to the floor. It kicks back in when the ground smooths out, or if you are braking hard it slowly grabs again. At first i thought it was sliding, but it definitely is not. The truck appeared to be equipped with abs but the previous owner seems to have cut the abs wire/sensor at the hub. Another thought i had is maybe the brakes need to be bled and have fresh fluid put in them, I have not tried this yet (Plan to this weekend along with a dozen other things). Its rather scary when it happens. but i didnt think much of it until i nearly rear ended someone..with my younger brother in the car. Now i need to fix this asap.
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I bought a 97 f150 4x4 last week. I was cleaning the frame up with a wire brush on a grinder and accidently cut one of the front brake lines. Seeing how this truck has only 100k on it and all oem stuff on it, I decided to replace the front brake components, calipers, pads, rubber and steel lines. Got it all back together and bleed the air out of the front brakes. But the pedal still goes to the floor. I can pump them up with the key off but when i turn it on the pedal goes to the floor. I did not bleed the back brakes becasue I assumed that the master cylinder would be divided and independent of each other- back and front. So it this just that the back brakes needs bled or do I have another issue like bad booster- everything was working well before I cut the line?
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I just joined as I bought my '97 F-150 5.4 4X4 about 3 months ago. The dealer gave me a 6 month warranty but hasn't honored it at all and I've had one problem after another. That's another story though but right now I'm just trying to fix the important issues. The problem at hand are my brakes.
I was noticing a couple days ago (maybe I never noticed it that much as it was a new vehicle to me) that when I apply the brakes it sounds like a bicycle pump and the pedal travels nearly all the way down. It doesn't hit the firewall but I'd probably guess it has 3 more inches or less until it bottoms out. The hissing only occurs as the pedal travels and stops when the brake pedal isn't moving.
Now I'm not sure if the hissing sound is normal as I replaced the brake booster (from the junkyard though) and the new one still hisses when I apply brakes. The brakes seem to work okay, could be more sensitive it's just the pedal feels soft until it almost bottoms out like I stated before and the the brakes grab a little bit harder. What could it be?
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I have a 2003 F-150 4x4 with cruise control and 4-wheel disc. When I am at a stop light for a while, when holding the brakes, the pedal slowly begins to fade towards the floorboard. I have replace two master cylinders, the original and a reman and then put on a new Motorcraft one...all providing the same problem. I have been told by dealerships that it is my imagination or that this is a "normal" problem. Having my truck roll at a stop light while the brakes are applied is not normal.
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I have a 1997 F250LD 4WD. I was driving and came to a stop light. I hit the brakes and the pedal was rock hard with what seemed to be very little travel. I pushed hard to get to a stop and the abs activated and I came to a slow stop. This has happened about 3 times over the last 1000 miles of driving. I see no ABS or Engine lights. Most of the time the brakes are normal. Pads are fine, fluid is fine. Brake booster seems to work fine, pedal is not mushy or hard to press other than the 3 or so times this has happened. Once this happens I can let off the brake and everything is normal. I have not found any vacuum leaks.
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Yesterday while driving, i lost all power steering and power brakes (you would automatically think Booster). I pulled over, popped the hood and fluid was spewing from behind the power steering pump somewhere. I limped the truck home about 20 miles. I checked brake fluid and it was full. checked power steering fluid and it appeared to be empty. Yet when i added fluid it took less than a half quart. I started the vehicle to pressurize the pump and find the leak. Yet the pump never pumped any fluid. (one would thing pump was out) I am baffled as to if the pump went out, why fluid loss? If the booster was out, why do i still have brakes just without power assist? Andif a hose is blown, why such small fluid loss? I dont want to just start replacing parts till it get the right one
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So tonight, I lost most of my brakes. If I kept at low speeds and pressed the pedal to the floor I could eventually stop, but not well. I imagine this might be more of a general question not specific to Ex's, but I thought I would start here.
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Trailer light dont work right. If the running lights are on the brakes dont work. If the running lights are off the brake lights work fine. I cant drive at night this is a huge issue for an up and coming transporter. Its not the trailer lights ive eliminated that with my plug checker. Is it the rely? Blown fuse? Or common ford electrical mess up?
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I have a 97 F250 that is having reoccurring brake issues, It has an intermittent hard pedal with little to no brakes when it occurs. It will stop but you are standing on the pedal with both feet. I have replaced the booster, master cylinder, and the vacuum pump in the past trying to isolate the issue and still had the problem. On this year model the abs ids only on the rear correct???? if it is shouldn't it only be affecting the rear brakes? Since this truck has a dual reservoir MC the front should still work?
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I flushed my brakes this afternoon and all went well until I got in and found a red series of lights on the MFI stating "brake fluid". I touched the brakes and there aren't any. I pumped them 50 times or so and still the pedal goes all the way to the floor board. I used a machine I have used on countless other cars and have never had a problem before. I used VW brake fluid. The brake fluid container is right at the max line. The only thing that was different compared to the other cars I have done is that the Treg has two bleeders, one on the front of the caliper and one on the back. I called a VW service consultant and he told me they use the outside one to flush the brakes and so that is what I did. My only guess is there is air in the system. But, I am not sure at all how that happened.
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My 18 year old launched the little wire spring thing that applies pressure for the brake pads on front disc brakes. Could have gone in to neighbor's yard! Actually lost one on each side. He put it all back together without one on each side. I said it would still work fine. What's the deal really? Can't be that important are they?
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I am working on a e-150 van, 2005. the brake pedal fades to almost the floor with little pressure on it. I just replaced the master cylinder, bled the entire system, and it STILL fades to the floor. driving, or in park. engine running. 4 wheel disc, 4 wheel abs...
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If this was my car or older truck I would know what the deal was. First hill I came down in my recently bought 2003 F250 the pedal pulsed a bit as I tried to slow down...is this the way ABS brakes behave? Never had them on a truck before...she stopped ok but don't know if they are warped or normal ...I'll pull wheels later (not a daily driver)...
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2001 F-350 / 7.3L / 147K ... What are some symptoms of the master cylinder going out? And is there a such thing as a rebuild kit anymore? The pedal has been getting spongier & spongier over the past months. Truck still stops O.K. but you have to brake earlier than I used to. Pedal can go almost to the floor. Pedal continues to go to floor as pressure is applied. Does not go to floor though.
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Today I was on a highway traveling at 60 miles an hour. There were no cars in front or on either side and nothing on the road. My foot was on the accelerator and not on the brake. Suddenly the seat belts pulled very tight (I believe that is called "pre-tensioning") and the brakes slammed on without any input from me. The car rapidly decelerated to about 30 miles an hour. Fortunately there was nobody tailgating me. After that everything seemed OK. My vehicle is a 2013 Prius v (lowercase v for the Prius v wagon) model 5 which has the technology package.
I took the car to the dealer and they checked the collision avoidance system and said they could not find a problem. The service manager said he has a Camry and it has happened to him once. They had never heard of it happening on a Prius. Apparently Toyota has a bulletin about this for the Camry, but not the Prius. They suggested I turn off the Collision Avoidance System with a switch that is under the dash.
I am not sure whether to turn it off because if I do I lose the adaptive cruise control and collision avoidance, If I leave it on this can happen again possibly causing an accident.
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Im having problems with my brakes mainly being pedal pressure. It's really really soft and has no bite till near the bottom which could be due to the res being low on fluid since both rear calipers seem to be leaking from the handbrake mechanism. When I got my car safetied they fixed my handbrake but I think they put the adjuster to tight cause I felt more rub then what I thought was normal but could be completely wrong. Not to mention this starting happening the day after I got it safetied
the handbrake bracket didn't retract like the other side but since then I loosened the compensator and pulled both side handbrake lines off and retracted the handbrake bracket by hand so now it looks like the right side.
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'97 F150 4.6L 4wd automatic... My gauge jumps around, sometimes it works and other times it shows no pressure. Could that be the oil pump? Or is the gauge most likely bad? Whats the actual purpose of an oil sending unit?
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