Ford 7.3L Power Stroke (1999-2003) :: Brake Pedal Pulses In The First 1/2 Inch Of Travel
Mar 5, 2016
New to me 2002 F-250 PSD, done brakes all the way around for piece of mind.
Job went very well, replaced one caliper and its bracket, serviced all pins and replaced one set of pins as well, (different corner). Bled brakes all day via gravity, watching reservoir and filling as needed as to flush in new fluid. Truck is in great shape. Mileage 153,000 no rust, turned all rotors just to re-surface.
Now here is what's happened, my pedal is good but it pulses in the first 1/2 inch of travel and once passed that no pulse, got under and watched the pedal rod do this as I very easily touched it in that first 1/2 inch of travel, you don't even begin to get much brake started here if any! Truck running; yes-Truck not running no pulse action occurs.
I'll add this: fluid removed had a green tint to it but had no moisture or bad odor. Different fluid??? I didn't know. Used Dot 3 Off the shelf O'Reilly's.
Hydro-booster didn't like fluid? Air? Master cylinder? No leaks before or after this procedure.
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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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So I have my 2000 F250 in the shop because I was feeling a funny vibration in my brake pedal. (isn't warped rotors, I know what that feels like). It also felt like the brakes were on, then would release a little, lengthening my stopping distance.
I took it to a small local shop and the guy said it sounds like the hydroboost. I told them to fix it. Next day, before they start to fix, they call and say they can't guarantee it's the hydroboost and may be the Power Steering pump.
My question is; is there a way to test it to know for sure which part is failing? How do I figure out which one is causing the problem?
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Ive had plenty of brake issues with this truck since I've owned it and I finally got to inspect a brake i knew was having issues. The outside pad was metal on metal. The inside pad was gone and the one piston was extended completely open while the other one was closed. So to the question. Ive bled it like i do any other caliper and no luck. I went an bled all the other calipers and still no luck. The brakes seem to be working ok even though i never really tested them super hard but the pedal is far lower then it was before.
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Installed Tekonsha P3 on my 2000 F350 I used the recommend pig tail easy hookup when I press brake pedal no voltage at plug but when I move the manual lever I get voltage. I believe the stop light switch activates it. The fuses all check out. I did have a Banks engine brake installed by their people I don't know if makes a difference
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2001 F350 XL... Fitting on PS pump broke and I lost PS and PB with fluid everywhere. Replaced the hose with a new one from Autozone and I have no noticeable leaks.
I know I lost more than a quart but I could only add less than a quart (Mobil 1 Synthetic ATF). I'm also getting a whine from the steering wheel when I turn stop to stop. The power steering is back and there are no leaks (that I see) but the brake pedal is mushy. I've pumped and turned stop to stop for a while. Do I have to bleed the system like I'm doing a fluid flush? I hate to waste the synthetic fluid that I changed about two years ago.
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My husband and I put a new master cylinder in this vehicle recently. We bled the system but there is still excessive pedal travel. We tried bleeding the system again and had the same results. There are no apparent leaks in the brake system.
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I have a gen II Prius 2007 with 115,000 miles on it ...
When I use my brakes at low speeds under 15 mph, there is a bit of extra brake travel before they engage properly ...
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Is this normal? You can hear the air coming out.
The reason I ask if it's normal is because it seems like I have to press my brake pedal halfway down before it engages. At least an inch or two. However I can still lock up the beaks. But it seems like they are not as sensitive. Takes a bit of travel to engage.
I've already bled the brakes too.
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I just had a remote start installed with a turbo timer that works off of the parking brake being engaged. No matter how hard I press it the light does not go on, however when the installer probed the sensor to ground it, it worked fine.What part this is that needs to be replaced. The stealership quoted me at 200 something for a whole parking brake assembly.
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I took delivery last week of a new 2012 F250 with a 6.7 Power Stroke Diesel. This is my third F250 with a Power Stroke Diesel. My first one was a 1997 w/7.3 PSD and my last one was 2001 w/7.3 PSD which I traded in for the 2012.
Now for my problem. The brakes seem spongy to me. When I am applying the brakes I get what seems like a longer than normal pedal travel (to me anyway) and soft. The braking isn't as good as my last two F250's. If I pump the brakes, the brake pedal firms up and the braking really improves. I have not contacted my dealer yet.
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Perhaps a strange question, but is there any way the pedal height can be decreased. On my 2010 LS 460 it seems to be higher than on my previous 2005 LS 430 to the extent that I lift my foot off the accelerator pedal and miss the top of the brake pedal. It's happened often enough that I've been wondering if it could be reduced an inch or so.
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I have a 2000 Grand Prix 3.8 with 65,000 miles. Bought the car new for the wife to drive. The front brake lines rusted out. My wife has a friend who is a backyard mechanic. She had him replace the front brake lines, from the abs block to each front wheel. Well she finally told me that the brake pedal is not right. I went out and sure enough with pressure on the pedal it goes to an inch off the floor. I bled all for lines at each caliper, no change in pedal. I bled almost a full bottle of fluid. You can pump the pedal for 10 minutes and no change in the pedal. I don't think it is air in the line. I changed the pads and rotors on all four corners last fall. The brake pedal was normal then.
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What is failing. I have a 2000 F350 PSD with 116k miles. When I bought the truck last year, I noticed that the clutch pedal would squeak while it was coming off the floor. It doesn't happen when the engine is cold. I need to drive it about 30 min before it starts to happen. On longer trips, several hours, the squeaking is louder and the pedal gets very stiff. When I stop for fuel, I've come close to stalling when coming out of 1st gear. I can push the pedal to the floor, but on the way up, the pedal squeaks, and then once I reach a certain point, say 3-4 inches off the floor, the pedal looses all freeplay. The best way for me to describe it is the pedal travels up faster than it normally does when it's cold, and if I don't compensate with more throttle at that point, it will stall.
I've learned a lot by reading this forum for the past year, but I don't know the first thing about how to diagnose problems like this. I've taken it to 2 mechanics for test rides -- one thinks the clutch is fine and thinks the problem is the slave cylinder or a broken bushing in the pedal.
The other shop is also a small independent shop, but they specialize exclusively in Ford trucks, so I thought they would be more knowledgeable. But now I'm wondering if they could sense my ignorance and are taking advantage of the situation. They also took it for a drive, but they think the slave cylinder is fine and that the clutch needs to be replaced. I questioned him about the slave, and he pulled it to look at it, and asked me to push the pedal slowly while he was under the truck. I still had a little resistance and a faint squeak even in this situation. But he said the hydraulics are so simple that he felt we could rule that out. I can't remember exactly what he said, but I think he believes one of the springs in the clutch plate has failed. I just know they are suggesting a new clutch and they want to machine the flywheel to original specs.
I thought the leading symptom of a failing clutch was slippage under a load. So under strain, I would expect my engine to race occasionally, like I'm in neutral. But I've NEVER experienced anything remotely like this, even when driving hard in the hills pulling my travel trailer.
I know something is wrong, but based on my limited knowledge, I'm not sure what. It's getting a little harder for me to move the shifter into 1st and reverse, but once it's there it's fine. I've never experienced any racing or slippage in any gear. The one definite symptom I have is that squeaky pedal that when driven for a couple of hours, gets so stiff that it can cause near stall outs. With those symptoms, what do you think is going wrong?
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I have a 01 7.3 F-350, 120000. I rarely get down hard on the go pedal but a while back I did and heard at pressure whistle just before it would shift. I thought a bad turbo hose so I replaced them all. 'While working on the hose mounts I cleaned up the castings for a better seal'. The hose replacement seemed to get the running but the whistle is still there. I am thinking a leak on the manifolds for the Y-Pipe connection OR does the turbo have a release valve that can make a whistle sound?
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Started noticing a whooshing noise when I let off the accel pedal on my 2002 F250 7.3 powerstroke.
You can hear it best towards the end of this video: [URL] .....
What could this be?
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If I could determine the resistance of the accelerator pedal at around 1000 rpms, couldn't I rig up that resistance and switch it on in the accelerator pedal circuit to make the truck go to high idle? Any flaws in my thinking?
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I own a 2000 F250 7.3 Powerstroke 4x4. The only aftermarket engine modification I have is a Tymar intake. The problem I'm having started about 6 months ago in a very erratic fashion. I would pull up to a traffic signal and as the light changed to green, without warning the truck would have no throttle response. The engine was running fine; there was just no response as I stepped on the accelerator pedal. Usually when I put the transmission in neutral, revved the engine a few times, the throttle would come back on line. This happened 4 or 5 times over the summer and then went away completely until today. Today it came back with a vengeance. At one point I had to shut the engine down completely to restore throttle response. It's a bit unnerving when it happens in the middle of a busy intersection. I was told that it may be the throttle position sensor. Does this sound correct and does it need to be replaced?
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I am pretty sure my pedal is going.. Today and last month it would just die from a dead stop push the pedal and no go, but truck idling fine. I cleaned it off a few weeks ago but now its back. push pedal in and out a few times and all is fine for a few weeks. Truck runs fine other than that. Does not throw a code, just trans light comes on because no movement I think, then it goes off as soon as i start to move along. I have a adjustable pedal assembly 2c3z-9f836-de 508.45 at white bear lake ford.
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I own a 2003 Toyota Camry SE four cylinder sedan with only 46,000 miles. The car has four wheel disc brakes and an anti-skid braking system. About a year ago, I started to notice that there was excessive travel in the brake pedal. That is, the pedal will travel an excessive distance before there is any braking action. I have tried to correct the problem by pumping the brakes as I back out of my driveway to engage the self-adjusting mechanism; doesn't work. I have also gotten in the habit now of pumping the brake pedal; that works a little, but it's not a solution. Being an old chap who always maintained my car myself, and diagnosed and repaired most problems, I concluded that the problem was the master cylinder because when stopped at a light, the brake pedal would continue to go down. Incidentally, there has been no loss of brake fluid since I bought the car new in 2003. Recently, I had the master cylinder replaced and learned that I'm not as car-smart as I thought. There is no improvement in the pedal travel problem.
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I have a 2002 F250 4x4 Powerstroke with Automatic. I have been having off and on issues for months with the throttle going dead. This only happens when I start it, if it works when started it will continue working until a different start session.
I have replaced the pedal several times before learning how to check its output with a meter and am quite sure that is not my issue at this time. However, when the pedal is depressed the check engine light lites up and nothing happens.
I am thinking it must be the computer itself, but was told there is another sensor or module under the hood that could cause the issue also which is several hundred dollars to replace as would be the computer.
Is there a way to test the computer, and what is this other module/sensor if it exists that could be the issue? Unhooking and rehooking the battery to reset the computer is no longer working to buy me a few more weeks, is there a simple way to reset the computer to try?
I love this truck when the throttle works but I am getting tired of paying on a truck while having to borrow a vehicle to drive to work.
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