Ford F-150 - 1997-2003 :: 1998 - Brake Pedal Is Low
Apr 4, 2014
I have a 1998 F 150 extended cab and the brake pedal is low. The front calipers and rotors were replaced last year because the left front caliper froze on and smoked the pads. I also replaced the brake booster and master cylinder because the brake booster showed signs of leaking vacuum. The whole system has been bled completely twice. After each bleed, the pedal was high and firm.
I have not found any sign of leakage and the fluid level looks ok and unchanged. The rear brakes look ok, but no work on them in last few years. Mileage is 198k. I had to hit the brakes hard on a muddy road a few weeks ago and the truck stopped straight, so the ABS seems ok. The problem is that the pedal has dropped down a few inches from where it was then the system was bled out. What to check next?
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I have a 2003 F-150 supercrew 4x4, was having problems with the brake pedal going to the floor, had replaced the front calipers, master cylinder and the brake booster. I have blead everything out including the rear calipers even though I didn`t touch them, the truck stops but the pedal isn't what it used to be, even when the truck is off the pedal has a tendency to go down, there is nothing leaking and not losing fluid, don`t know what else to do?
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I just finished replacing pads, calipers, rotors, wheel cylinders & brake drum hardware on my truck along with flushing the brake fluid. The brakes work but the pedal goes almost to the floor. While bleeding them some air did come out as expected. But a couple times the master cylinder reservoir got very low on fluid. The workshop manual talks about bleeding the MC but are special fittings needed for that?
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The brake pedal intermittently goes to the floor on my nephew's 2003 F150 without grabbing at all. Pumping the brakes restores them, then they act normally for a while. I've replaced the master cylinder with a new Motorcraft unit, no change. No ABS codes. All rubber lines are in good shape. I'm stumped, although I suspect the ABS system somehow. I'm going to have him pull the ABS fuse and see if the problem goes away.
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I'm in the process of putting a brake controller and 7 pin plug in on my 98 F150 Super Cab, 4x4, 4.6 L with a auto trans. Got the Tekonsha Voyager hooked up to the existing harness under the dash. I have the 7 pin installed out back and thats where my problem begins. The 7 pin harness came with 3 30amp fuses and 2 relays that need to be placed in the power distribution box under the hood. I can figure out where the fuses go but my manual says nothing about the relays. The relays that are already in the box are for things like fuel pump etc.
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2002 F-150 4x4 w/ 5.4 v-8. Brake pedal goes half way to floor before it starts to stop the vehicle. I have replaced and bled the master cylinder, bled out all of the calipers, and the calipers are installed correctly because the bleeder screws are at the top on all of them so no air can be trapped up there. The truck seems to stop fine, but just takes more pedal to get it to start stopping than I'm comfortable with. Could the ABS unit need bled out too? Or could it be an adjustment issue with the booster rod?
Also, something else I noticed, and it may be related..the ABS unit usually makes a slight clanking sound (like someone kicking a metal garbage can) a couple seconds after the key is turned on. I know its the ABS unit because a couple weeks ago I had a friends scanner hooked up to the truck, and I went into the ABS computer to clear the codes (have ABS light on from what I found to be a bad sensor wire on the front drivers side according to the scanner) and as soon as i cleared the codes on the ABS, it made that sound. I don't know if maybe there is something wrong with the ABS actuator, or if it's related to the brake pedal issue.
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I have a 2000 SCrew KR F150. A couple of weeks ago I noticed the brake pedal was slowly going to the floor while at a red light. I pulled over and popped the hood checked the fluid reservoir. It was full, so obviously no wheel cylinder issues or fluid loss. I haven't had a chance to tear into it yet.
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I have a 99 f150 and it won't shift out of park. The taillights work and I tried to turn the key forward and move shifter to neutral but it didn't work. Is it the switch on the brake pedal or the interlock solenoid by the shifter?
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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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Brake lights do not work. The turn signals work, the flashers work, and the running lights (head lights) work. I checked the bulbs and both filaments light up during the above processes.
I removed the brake switch at the pedal. When I was removing it, I heard some clicking under the dash. I connected the 2 pins with a wire (bypassing the switch), and got a spark a few times along with the clicking sound like a relay,and the brake lights would come on, but now nothing. No sparks, no clicking. The flashers and turn signals and running lights still work.
There are no blown fuses in the fuse box to the left of the steering column. Is there a relay somewhere under the dash just for the brake lights?
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Last week my brake pedal started going to the floor when I stopped, it still stopped and felt fine on the top half of the pedal travel but then it would just slowly fade to the floor. I took it to a local shop and they said the master cylinder was leaking internally and my rear brakes were shot. I have 75,000 miles and the rear brakes were original so I told them to fix it. This is basically what I expected it to be.
They kept thinking they were getting defective master cylinders but after the two Napa parts and two Carquest parts they realized they misdiagnosed it and said I needed to take it to the dealership. I paid for the rear brake job since it needed done anyways and have an appointment for next week at the dealership. What might be causing the problem? I see no brake fluid leaks, no vacuum leaks, the booster was replaced 25,000 miles ago due to noise, no ABS light on, no CEL on, no other symptoms.
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having problem w/ 98 f-150. first truck stuck in park. figured out how to get around that (turn key 1 position, shift to neutral, start vehicle, then engage transmission). but no brake lights! I have turn signals, driving lights, hazards, etc in rear. I disconnected harness from brake light switch. there are 2 leads, 1 hot, 1 not. i jumped them and no brake lights. i tested the switch and it functions properly (it's reconnected now). i changed my bulbs in tail lights. I unplugged the solenoid (which is impossibly located behind/beside steering column). this allowed me to shift like an old truck (without having to brake first), but doesn't solve my lack of brake lights (i've reattached the solenoid harness to remind me of my problems).
i am putting my money on a broken wire somewhere between the brake light switch (b/c that was good) and the solenoid (i am not hearing that faint click when i step on brake). but a broken wire should work by accident some of the time (unless cut cleanly and completely). there is a green wire with red stripe leaving the brake light switch and 3 wires at the solenoid harness (1 green and maybe a smaller gauge than those at the switch and 2 others which i don't recall their colors). Ford service manager doesn't think it's the solenoid but wasn't otherwise useful except to say, "hey, why don't you bring it in to me." What to look for before i plunk down for someone to perform what I already have before completing the job!
can i splice a wire from something (? brake light switch?) to something (?wire in solenoid harness?) or does that "electronic signal" get processed somewhere else first?
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I have a 99 F150 4x4 (5.4) 173k miles. I bought the truck from family about 6 months ago and from time to time if you stepped on the brake pedal to hard (not locking up, but pretty hard) it would feel like the passenger rear tire would lock up. He said that there was an issue with the automatic adjuster on that side. Here lately the ABS light on the dash has been coming on every couple of days, of course on the next restart it's off. Could these two issues be related?
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I have replaced booster, master cylinder, all four callipers, and bled the brake system a number of times on my 2000 F-150 4x4. and still the pedal is wicked spongy, is there some other problem?
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I have just replaced the ABS Module, and replaced the brake fluid in my 1998 VW Passat 1.8T GLI. Now my brakes don't work at all, when I press the brake It goes all the way down. All the pipes are connected correctly and everything was put back the way it was, so I don't get why the brakes aren't working at all. Passat 1998 1.8T GLI...
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03 F250 7.3. I busted a brake line last week somehow, Got it replaced and fixed up, Bled that line and everything was somewhat good.
Now, when i hit the brakes hard, I have pressure. If I let off even a little, My pedal will start to sink till i apply more pressure. I am gonna fully bleed my brakes when I'm home to see if this could solve the problem.
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I recently installed an aftermarket rear spoiler with third light. While searching and testing for a hot brake wire to hook up to, I somehow accidentally shorted out the brake lights. They will not come on when i step on the brake pedal.
I checked the corresponding fuse and it is still intact. The brake light symbol on the dash is "on" so I know the "brake light out" sensor is still working....is there something im missing in getting the brake lights to work again ?
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My car sat for 3 months and then I tried to start it. When I turn the ignition on, everything looks fine until I hit the brake pedal and the dash lights dim. If I don't press the brake, the dash light dim when I turn the ignition to crank. Either way the starter either clicks or doesn't do anything and I hear a humming sound. My husband said, "The battery has been charged and measures 12.62 volts," but the cigarette lighter voltage measures 12.26, so they are not the same. I have tried jumping it and I still get clicks.
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My clutch went out on my 98 Dodge Ram 2500 4WD the other day. I limped it home shifting like a big truck timing the shifts w/out the clutch. I replaced the slave cylinder w/ an aftermarket that had a bleeder. Bled it and got the pedal back up and it still wouldn't disengage the clutch. I replaced the master cylinder and started getting pedal back until I let the reservoir get too low and now after plenty of tries, I can't get any pressure built. I get a stream of fluid, but no air. Bench bleed the master and start over? I'm at a loss.
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I recently purchased a mutt of truck, a 97' F150 heritage w/5.4 Triton motor, 1/2 ton 2WD short bed.
Having a brake issue, the pedal keeps fading. I noticed it first while sitting in traffic on a down hill grade. I am holding the pedal and notice it starts to creep down slowly, I pump it up and it firms up then starts collapsing again. So general logic says hydraulics are loosing pressure right?....No leaks anywhere, so it must MC tight?
I have replaced the master cylinder, brake booster, and both rear wheel cylinders. Long story short they all needed it, truck has 265K+ on the body with 95K on the motor. The only thing I did not do by standard is bleed the MC on the bench, I installed and long bled starting with the right rear working my from longest distance to shortest (wheel speaking). So when bleeding I did of course get air coming out because of the new parts but I still have the same fade issue.
I am confident there is no air in the lines, I have bleed a quart of brake fluid through just to be sure. I have read a lot about proportioning valves and ABS stuff.
I will try and get some vehicle specific photos and attach have hit a road block with this. I am leaning towards the ABS valve thingy mounted on the drivers fender that has four lines attached (2 in and 2 out). Other than that it comes down to hard lines which have no leaks.
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How the heck do you reconnect the brake drum end of the E-Brake ?
There seems to be not enough play in the cable to be able to hook it.
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