Passat (B6) :: Loss Of Braking Power - Slight Pulsation In Brake Pedal
Jan 4, 2009
Ever since I took my 18" wheels off for the winter and put the stock VW 16's with snow tires I have on multiple occasions almost rear ended the car in front of me when I experienced what seemed like a loss of brake pressure. The brake pedal did not feel spongy or anything but often in this situation the abs brakes seem to kick in for no reason. I feel a slight pulsation in the brake pedal which I can only assume is an activation of abs. I'm wondering if this slight pulsation (1 second duration ) is causing my brakes to be less effective. The pavement has been completely dry and I was not traveling fast enough, nor pressing the brakes hard enough to cause the tires to lock and trip the abs.
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I have a 2013 sonata gls and I bought it new, it only has 4,000 km on it. I don't know if this has always happened and I am just noticing now or just all of a sudden occurred but when I was stopped at a red light today and I had my defrost on, (heat fan on) it felt like my gas pedal there was a slight pulsation that I could feel. I also noticed earlier in the summer when the ac is on it seems like the car pulsates as well or the engine just sounds rougher. It seems to go away when the ac or heater fan is on 0. Is this an issue or serious problem? Why this is occurring?
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2008 F250 Crew Cab 5.4, 79K miles, had new brake pads installed at 40K miles. Recently, I noticed front end shudder and some pedal pulsation while braking. It started kind of sudden. My first thought was a warped rotor.
When I took things apart, I found passenger side front rotor was cracked and the caliper pistons were rusted and falling apart, the old pads were only worn about half way. My thoughts on a bad rotor were confirmed, and then some.
I replaced the broken caliper, both front rotors, installed new pads on all four wheels, and bled the brakes. To my surprise, the brake shuddering did not go away. I'm stumped.
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My Camry XLS have pulsation when brake pedal is applied. The pulsation get increased with the speed and very noticeable at 60 -70 mph.
Is it front or rear break issue ? If you think rotors has to be re-surfacesd should I also change pads ?
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My car is a 2004 Toyota Camry LE 2.4L. I've been having a brake pulsation problem with my car for few months. I feel the vibration on the pedal and also on the steering wheel when I brake at high speeds. And also I feel like the pedal goes too low and not responsive enough.
So I took the car to a local shop 3 days ago and they told me that the front rotors are bad and have to be replaced. They installed new Wagner front brake rotors and pads. But still I get the same problems described above. Today I drove on the highway and got the same vibration both on pedal and steering when I apply brakes.
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I noticed a pulsating feeling when I applied the brakes in my 2001 Ford Focus. I figure that it might be warped rotors, but after driving the car for a while, it seems to have dissipated. The car was sitting around for a few weeks. I read that it could just be rust buildup, but I feel that would require more than a few weeks of sitting around. Is there any way to check for myself, short of taking off the rotor?
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I have two Hyundais - 2011 Sonata SE and a 2008 Santa Fe Limited. here is my problem with the Santa Fe.
Brakes: Changed front rotors and pads - rear had the rotors resurfaced and installed new pads. Still get a lot of pulsation when stepping on brake pedal. Is there anything else I should be checking?
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I had a front brake job done on a 2002 Dodge Dakota pickup at 85000 miles. When I stepped on the brake, I felt pulsation in the pedal and a sort of wobbly feeling in the steering wheel. Also the brakes were making noises while driving. Classical sign of a warped rotor?! Long story short brand new rotors, brake pads and calipers, later the pulsation is mostly gone but the braking is still not smooth at one point while the tires are turning. Now i do have to older tires on the front but i just bought two brand new tires for the rear. Would it be wise to put the new tires on front to see if there might be some unevenness caused by the old tires before i take it back to the shop?
Also the feeling of the brakes catching on one point seems non existent or so minimal I can not be sure if the road surface interfering while driving slow of applying the brakes gently. But slowing down from higher speeds (above 40 mph) and using more then gentle braking ( not standing on the pedal with both feet) it is definitely there. Before the brake job braking caused the steering turning right. (sign of more braking action on the right - right?). Now with new stuff still pulls to the right but not as strongly. Should not this disappear with the brake job? Or get the new tires on front and see what gives?
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I just got my car back from discount tire. Every time I accelerate above about 45 mph the traction light goes off Also, There is a shimmy in the brake pedal under braking.
NOW: there is ONE tire that is SMALLER than the rest that they put on or something. It is a different tire, same company, but obviously a bit smaller. Now, they told me it would be fine, despite my better judgement that It would preform weird as well as look slightly gimp. the tire went from driver rear to passenger front, and I'm willing to bet that is the cause of both problems. What should I do?
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Experienced an almost unsafe loss of stopping power when backing up after a cold start? Every morning when I back down the driveway in reverse, by about the third pump of my brakes the pedal effort increases, the pedal becomes very hard (like when you pump the pedal when the car is off) and I have a hard time bringing the car to a stop to put it in drive. I need to take it in to have this looked at...
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Ok, so I have my VR6, and I have a 2.0T as well. My 2.0T feels MUCH faster than my VR6, and I don't think it's normal. What's happening is when I put the gas pedal to the floor, the car almost acts like it wants to die, the RPM's go all the way down, and there is complete power loss for a few seconds. Then all of a sudden, all the power is there at once. Weird, right? For some reason I keep thinking it's related to the transmission. It almost feels like the car has no idea what gear to be in and doesn't know to downshift or something.
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My 07 2.0T (101k mi.) Passat idles roughly when in the drive position (at a stop light, or sign, etc.), the engine sounds "gruffy", and suffers from a slight loss of power with horrible gas milage. I've had spark plugs and the coil pack replaced two weeks ago, and still can't seem to find the source. There are no misfire codes or any others showing up. From reading many posts here, I've found that a common issue is carbon build up for similar symptoms of my car. Do I need fuel injector cleaner, and or valve stem cleaner, etc? As far as the possibility of cleaning out the intake valve, I only open the hood to add oil, washer fluid, check my oil, and wipe down the engine.
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It's a UK VW Passat year 2000 with 1.8i longitudinal engine layout. Car has ABS
I discovered that the brakes are not releasing quickly after application. Examples where this has been noticed:
When braking and accelerating at the same time to dry brakes after puddles. Noticeable lack of power to re-accelerate when you release the brake pedal, presumably due to continued braking. Noticeable continuation of braking when trailbraking into a corner (ok sometimes I'm a bit of a racer in a family car).
What concerns me is when the snow, ice or heavy rain comes back that I might find sudden instability if the brakes aren't releasing after slowing for a corner or that worse still I'm destined for total brake servo failure.
There are no ABS related error codes although in the ice and snow I did find that the ABS fired until the pedal raised stiff and all 4 wheels just locked up (that was a fun junction crossing).
I have noticed that the drainage ducts in the bulkhead are blocked but I've never had water enter the car so I don't think it's water in the brake servo although this could have happened prior to me owning it I guess.
Working theories:
Due to slave cylinder corrosion and calipers are releasing slowly
Due to brake servo fault - either water ingress of vacuum leak
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I have a 2001 Ford Ranger 4x4 that developed an odd problem almost two years ago that no mechanic I've taken it to has been able to find and fix, and I and my more car-savvy friends haven't had any luck with either.
About maybe 50% of the time when I sharply turn left (only left, never right) the brake pedal goes "soft" and the vehicle's braking power drops dramatically (but not entirely). Because of the sharp angle required to make this happen, and the low speeds I have to be moving at to even handle that sharp of a turn with this vehicle, this has only ever happened when I pull into a parking spot, and the vehicle still manages to come to a complete stop safely before being in danger of hitting anything. It never ever happens at any other time, and brakes like a champ normally.
I've had numerous other issues with the brakes in this vehicle in the last two years, all of which I've fixed. This one eludes me and every mechanic I've taken it to, though. I've replaced both calipers, both rotors, the brake pads, bled all four brake lines, and had the ABS control unit and ABS motor replaced.
At the time the issue first appeared, I had two damaged calipers caused by shoddy brake pads disintegrating on me (almost new, barely worn, but covered in pockmarks, looked like a Michigan road) and clogging up the calipers. That caused the vehicle to lurch to a halt with screeching tires if I so much as barely tapped the brake pedal. Replacing the calipers and brake pads fixed that issue, but did not fix the soft pedal issue when turning left. I ended up with the same screeching sudden stop problem recently when the ABS module went bad, replacing it fixed that, the brake pads and calipers are still in good condition, and replacing the ABS did not fix the soft pedal issue.
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I had the discs replaced by VW UK & my VW garage a few months ago (V6 TDI) , car was close to 3 years and ~50K miles. There was a slight cyclic vibration/ pedal pressure on braking, not easy to detect, but from once you knew it was there it was annoying. I was not convinced the replacement was 100% successful, but it was not until I had 4 new tyres fitted and all rebalanced last week that I could clearly see that I still have the problem, maybe even worse than before the discs were replaced.
2 Queries
-Is there anything else that can cause the same brake pedal feel, other than a warped disc: a bend in a suspension component or the like? I query this as I bent an wheel last year in a huge pothole and wondered if this could have damaged something
-I have found a local company with an on-wheel disc skimming machine that I understand can be excellent to resolve these issues. Maybe this would be the way to go.
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Your breaks yet? Mine are starting to get really annoying, that high pitch noise at slow speeds with just a slight touch on the break peddle. To give an idea of loud, I have hearing loss from my job in the military and they are starting to bother me.
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What could cause this? Its coming from the rear end. It seems to happen if I am going over 45mph and apply the brakes. It feels like a warped rotor, but if braking from 40mph and below, it is smooth. Both rear wheel bearings have been replaced. Tires are new. There was a vibration while cruising between 40&50mph, which was "cured" by the new tires... While replacing the wheel bearing, I noticed some play in the right rear axle at the joint closest to the wheel.
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When ever I "Brake boost" it kills the power when I hit the brake and gas hard at the same time.
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I change my own pads as a good lifetime warranty with free replacement from Autozone is great!
But with the Tribeca... I changed the front rotors just like all my other cars over the years.. and now there is pretty severe pulsation when trying to brake... I've checked the rotors and pad replacement twice now and all looks perfect.
I searched this pulsation issue and saw on a Jaquar site that you can ruin the ABS on some cars when you don't drain excess fluid as you push the piston back to install then new thicker pads..
Is this an issue for B9? I don't see it anywhere... I'm ready to bring it in the shop.. the pulsation ONLY happens when braking and gets more severe when stopping from progressively higher speeds...
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Drove the lady's car out on some errands today and ran into a problem on our drive home. Car was pinging really bad (low rpms in 1st and second) and car seemed as if it couldn't get out of its own way. Was driving for some time on the freeway (after a blistering 0-60 time of 20 seconds ), and noticed that the brake pedal was really spongy (felt like a mk1 when you try to brake with the car off). Found that the e-brake handle was up (negligibly up (perhaps 1mm raised)). Didn't have power brakes at all and had to use a lot of engine braking to slow the car off of the freeway.
Rear of the car smells like copper (wet pennies) and found that the brake reservoir is cracked (but fluid still at max level). Also noticed that as of late, when the car is at a stop (sometimes in gear, and sometimes in neutral) the car will rock/bump a little almost as if someone were giving it a bumper kiss with their car.
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A friend brought me a car with the issue that the brake pedal sinks to the floor when braking. She said it was never low on fluid so I replaced the master cylinder and bled all of the lines with a friend pumping the pedal. The pedal would still sink to the floor. I tried vacuum bleeding the brakes and found that the front left consistently had large bubbles.
I Teflon taped the fitting on the calliper and the bleed screw which improved the problem but didn't fix it. I then replaced the calliper. The front left calliper still won't bleed and the brake pedal still goes to the floor. When I bleed it the regular way, the fluid comes out of the bleeder like it bled nicely. Neither of the rubber hoses that connect to the calliper have any visible damage. I had a friend pump the brakes while looking at the hoses and their is no bulge or swelling in them. Could the ABS need to be bled?
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