Passat (B5) :: Brake Pedal Really Spongy / No Power And Lumpy Idle
Jul 21, 2011
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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My dad drives an '06 Sonata. And he recently broke a brake line and had gotten it fixed. His current problem is that his brake pedal hasn't returned after getting the line fixed. What can he do to fix that? The pedal is really low and is spongy. And his ABS and ESC lights are also on.
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I have a question about the bleeding the brake? When I washed my E, I usually spray the wheel and the brake part. I don't know it is a good idea or not. Recently, I felt like I have to step further on the brake pedal to apply the brake.
The force is there and Brake assist is still in effect if I step fast enough. I just felt like the brake pedal is spongy. My E is on 36k right now. Do you think wash the wheel often will cause the problem to brake line?
I have confirmed that my Gf's Elantra is easy and ease to brake than mine. At the mean time, her brake fluid is darker than mine. My brake fluid is full and clear. Maybe I should not wash the wheel more often. Or maybe I get OCD too much?
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Still trying to resolve this issue. I've replaced the coils and now the 6 month old NGK plugs with Bosch plugs. I bought a kit from ECU; the red coils and the Bosch plugs. Car revs smoothly no hiccups all the way on up. But sometimes the car won't start first kick, and the idle is almost always lumpy. CEL light has been on for more than several weeks. Last time I took it to the dealer to clear. It was back on the next day. 112 K (km) on car. 2009 TSI 2.0...
Parts Source will read the codes, and now there are plenty. I've looked at other threads re PCV valves and air leaks, but I don't believe they're related to the idle issue I'm having. More pronounced in the colder weather I might add.
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I have a 2000 Silverado 1500 replaced calipers, master cylinder, and ABS Pump/Modulator. Bled all four calipers. Brake pedal spongy and has very little pressure and travels all the way to the floor. What am I missing here?
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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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I am trying to track down a problem for a friend with a 2001 Passat, 1.8L. The car has 150k and had a timing belt about 50k ago. About 3 weeks ago, it started misfiring badly on idle. In gear driving around, it purrs like a kitten. I scanned for codes and got:
Address 01: Engine
Controller: 4B0 906 018 CL
Component: 1.8L R4/5VT G 0001
Coding: 16551
9 Faults Found:
[Code] ....
At first I thought it might be a vacuum leak, but it looks like when he took it in 2 weeks ago they replaced all the vacuum hoses. It is unclear when he last had sparks and coils. I understand the likely culprits are:
sparks
coils
ICM
I am hesitant to blame sparks/coils if he is getting misfires on all 4 cyl. It seems like they might have screwed up the timing belt install given the camshaft sensor error, but he's been running for 50k miles since the change, and this idle issue just appeared recently.
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My Gen I Prius is screeching at me with the BRAKE and ABS lights on, and I hear the electrically actuated pump pulsing as it tries to get pressure into the system. The pedal is spongy and will go all the way down, with the right amount of exerted pressure from my foot.
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After my local brake shop changed the front rotors and brake pads on my 99 grand cherokee the brake pedal is spongy and long, almost reaching the floor. They don't know why. Apparently they had a problem with fitting the new pads. I took it to the jeep dealer and they told me the master brake cylinder was leaking and needed to be replaced. many hundreds of dollars later the brakes are still spongy and long and does not correct with repeated pumping. The dealer was also stumped and I complained that nothing changed with the new master cylinder. what might be the problem?
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I have a 2008 Ranger Sport 4x4. I noticed yesterday that when I stepped on the brake pedal it felt like nothing was there until I step a little harder then it was like full brake application. The truck only has 63000 on it. Then every once in awhile it would be normal ie very light brake application and slows like it should. Then back to same issue... Any thoughts about this??
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2009 XRS ABS brakes .... I changed all four brake pads and flushed out most of the old brake fluid. Bled all four sides. But now while I am in idle (like waiting for a light to turn) my brake pedal is spongy and is making a hissing sound. All was good before I did this job.
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I replaced all the brake pads on all 4 wheels. Pretty standard procedure. I now have a very spongy brake pedal. It stops but the pedal will be almost to the floor. I did not break any of the lines open during the procedure just used c-clamp to spread the calipers. No ABS light. Have a Snap-On power bleeder and bled the system several times with no change. Checked the power steering fluid level and inspected entire system for leaks.
2002 F-550 V10
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My 2005 Excursion, at 198K miles has become more of a 'hangar queen' in that I only use it for big jobs. I've kept it for towing/hauling and making long highway runs with more than 4 people.
The truck, 99.8% of the time, runs super. It pulls like a locomotive and gets decent fuel economy (17 mpg running 75 mph empty). I've got the 'blue spring', EGR delete, ARP headstuds, 4" MBRP, Banks intercooler, and run my SCT tuner all the time on "8000 lb tow".
But...there is this weird intermittent problem. It appears to only happen when it is warmed up and driving around town. Sometimes, when I pull up to a light, with my foot on the brake, the engine will sort of go into a 'lumpy race idle' and you have to clamp down on the brake pedal to keep it from lurching into the guy in front of you. Other times, it just runs rough and idles 'lumpy'. It has only died maybe 2 times when acting up. Often, the symptoms disappear on their own and don't come back. If I turn off the engine and re-start (to keep from scaring people at the bank drive-through) it usually runs fine after restart.
I've got an EDGE CTS monitor so I've been trying to find out from that what is going on. I can't seem to catch the parameter that might tell me. My local 'indy' shop can't find any codes thrown. The truck had new alternator, batteries, and starter motor installed in January this year. These symptoms have been going on for several years. Recently, they seem to occur more often.
I've searched on this site a few times, but with no definite 'hit'. I'll admit that I'm a big out of the jargon. I keep thinking this is related to FICM, but everyone seems to say the FICM would manifest as a cold start problem. I do know the FICM sits right on top of the drivers side valve cover. It has got to get hot.
FICM?
Injectors?
How do I kill this one strange problem?
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I noticed last week that my brake pedal seemed more spongy than usual. The next day the pedal would go down about half way to the floor before I had pressure. And then the next day the pedal would go straight to the floor. Pedal comes back up once released. I still have brakes pressure about an inch before the pedal bottoms out. Its been like this a couple days now. The vaccum pump works fine. I'm gunna try bleeding the brakes on it tomorrow.
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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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Ive got a 2002 f250 Sd 4x4 with 93000. Im getting severe vibration from the front drivers side at highway speed. I thought it might be a warped rotor but i cant feel it in the brake pedal, when I put the brakes on. How can you tell when the hub bearing assembly is going bad? The truck doesnt pull to that side either. I can hear it, and feel it more when i'm going around highway corners. When im driving through town, I can hear a "clunk,clunk,clunk" noise coming from that side also.
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I've got a R32 with nearly 100K miles on it. Several days ago I was adjusting my shifter cables and am not sure if i accidentally leaned up against any sensors or their associated connectors that are in that vicinity. I took the car for a drive to feel how the shifter adjustment had turned out. I was building engine RPM from 2500-4000 RPM, I let off the acceleration pedal and felt a small and new kick as if something got loose, popped off, or backfired. Not sure what it was but my engine started to misfire in what seemed to be in several cylinders. It idles rough but the needle doesn't exceed 1000 RPM during idle. When driving calmly, there is sporadic misfire. If pushed hard to build RPM, it will misfire heavily.
I scanned the vehicle and got the following codes,
P0300
P0301
P0303
P0305
I've checked
- Every hose I can see and feel for Vacuum leaks
- Checked all my fuses
- Swapped coils from banks 1,3,5, with 2,4,6
- Disconnected, cleaned and reconnected camshaft hall sender sensors and tightened the bolts.
- Have erased the coded and the same codes are back.
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Recently I just purchased a 1998 F-250 (light duty) with 11X,XXX miles on it. Up until today, it was running perfectly. However, today it started idling rough whenever I was at a light. This was only when I was stopped, in gear, with my foot on the brake. In neutral or park it didn't do it, and it stopped as soon as I gave it a little gas. No CEL either. I've looked around, and saw that it might just be "feature" of the 4.6. I also have seen to clean the MAF, but wouldn't that also give a rough idle when in park/neutral? Same with replacing the coil pack.
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Audi A3 3.2 owner here from Fortitude and have rough / lumpy idle issues? While at a stop in neutral w/a cold or warm engine, it seems a little rougher than one would expect. If you rev it to 1000-1100 rpm the whole car shakes.
Engine Mounts worn?
APR Software causation?
Cam Followers or faulty coils?
Do I need a heavier duty front and top engine mount?
Wondering if CAI and Exhaust along w/ the APR ECU tune is causing it or if I'm just being paranoid.
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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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My 89 240 is a project car so I am just fixing everything up as new until it's all done.
Replaced the Brake Booster with a fully reconditioned one, a new master cylinder, full pressure bleed, new pads. Now I have fantastic brakes but they feel super spongy still . As an example, I make an emergency stop to check if they are ok and after stopping just fine , the pedal still wants to go down further. I have checked all the flexible lines for ballooning and they are ok .
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