Prius (2004-09) :: Brakes Squeak / Hiccup If Pressed Deeply And Released?
Apr 15, 2012
Is it normal for the Prius's brakes to make a low-pitched squeak (kind of like something wet rubbing against something, or a burp), when I press it semi-deeply and release? The only reason I'm worrying is that I ran over a camouflaged flat metal object on the road today while changing lanes, and it could've weighed anywhere from a soda can to a heavy shovel -- it clunked against the bottom of my car loudly, then got propelled into the air and barely missed a car behind me. It seems trivial but I'm paranoid because I just got the car (used, great condition) and that happened on my first day. I don't remember if it was squeaking before the shovel incident. My girlfriend says her 3rd gen prius does it too but I have yet to verify it.
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I've noticed that when I'm stopped, or in park, and I push on the brake pedal hard I hear a squeak or chirp that sounds like it's coming from the wheels. It might even sound like someone is honking at you as if you were not going when the light turned green. I have not been outside the car when this occurs, so I don't know exactly where the sound is coming from.
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Ive got a 2011 Sonata GLS with 111k miles. I purchased the car new. For the past several months the brakes make a crunch or creaking sound when the pedal is being pressed OR released. The funny thing is it only happens when driving forward. When I apply the brakes while reversing, the brakes are silent. I did a pad slap at 68k and have taken everything apart, cleaned and re-lubed to no avail. The sound can be heard at the front wheels when someone else works the pedal while the car is parked. Pads have about 50% thickness. Pads? Calipers, master cylinder?
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We have a new 2015 Prius with 6k on it and we are noticing one solid brief single click when the brake pedal is pressed and/or released. It doesn't happen every time (just some of the time) but it is only noticeable at slow speeds.
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Every single time it rains, our 2005 Prius' brakes tend to go haywire-and just when we need them the most. They back breaks lock up, bringing the car to a jolt and throwing us forward. Sometimes it feels like it won't brake and then bam, a very hard stop. Sometimes they squeak and grind too- It never happens when it is sunny outside-only where there is a significant amount of moisture in the air. We've taken the car to the dealer three times and they can never find anything wrong with it.
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I just bought my mother's 2004 GX470 and I tried the voice command button on the steering wheel but no beep sounds and nothing happens. I tried looking up the information in the manual and seems like I'm doing everything right.
Second, when I brake I feel a thump as I release from the brakes, is that normal?
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I have an issue with my 1999 Ford F350 7.3L diesel and stalling when the accelerator pedal is pressed and released.
Background: Initially the truck would not start, and from there here are all the things that I found wrong and replaced. (keep in mind that I troubleshot all the issues and every part that was replaced was proven faulty)... Starting with the glow plugs, all but 3 were faulty and not making a connection to ground. (only one broke off in the head, but I was able to get it out with out getting anything in the cyl)..
Valve cover gasket and harnesses, this is to include replacing the connectors on the engine harness cause both sides of the connectors were broken. The ICP was leaking into the connector and breaking the connection to the PCM, so the connector was cleaned and the sensor replaced. No issues from that now.
The IPR was replaced cause the oil pressure was erratic and not stable when I had my pressure gauge hooked up testing the pressure. After that was replaced the pressure was ok, and it climbed with RPM's and fell back down like it was suppose to. I could not get the PSI up to 3000 PSI even at full RPM's, but it did not drop past 600 psi.
The fuel tank was recently replaced, and all the fuel was removed and "fresh/good" fuel was put in. The fuel bowl was cleaned out and the filter replaced. (the fuel bowl did have a lot of crap in it like rust and dirt). Fuel pressure was at 95 PSI last time I checked, which is higher than the recommended 60 to 65 PSI.
That being said the engine did start and run, but was very rough and missing. So I did all the injector o-rings. Some o-rings were starting to split, and others were not sealing like the copper washer on the injector tip. I could tell by the amount of crap in the end of the injector. ( not the tip, but where the injector contacts the injector cup. There must have been water in there or something cause that part had all kinds of crap around it)
The engine smoothed out after a couple day of running it, but it would still stall when it was cold. The block heater was replaced cause it was falling out. The oil was changed and the filter too. The CMP sensor was changed just because I know they will cause the engine not to start. I had a "known good" truck that I can swap part to and from, and I did a lot of that thus far.
Swapped the IDM, PCM, EBP sensor, MAP sensor, all relays inside the engine and in the cab. I was looking for the barometric pressure sensor, but from what I have read thus far that is a calculation in the PCM between the MAP and the EBP sensors. The diode to the PCM is good,I checked the harness for rubbing by the 42 pin connector and by the LF fender but I did not find any chaffing or rubbing on any wires. The ECPR was wired together, so I fixed it so that it is no longer that way, and the waste gate for the turbo was wired open. I took the wire off and made sure the linkage worked and it did move. I tried to lube up the valve in the turbo for back pressure, but I'm not sure if it worked or not.
I also swapped out the oil pressure sensor and the oil pressure temp sensor on the HPOP Reservoir, and blew out the EBP sensors tube. (air went straight through the tube with no restrictions.) I did a buzz test and all the coils checked out ok. I also did a contribution test and only three cylinders were identified as having some kind of issue. (but this is not enough to cause the engine to stall..) The only current codes that I have are the air intake heater, and the EF feedback not detected. Neither of which would cause the engine to stall in my opinion.
Symptoms:
When cold: The engine will start and idle just fine, but when the accelerator is pressed and held to 1000 RPM's the engine will sputter like its missing and surge up and down between 500 and 1100 RPM's. If the accelerator pedal is pressed quickly the engine speed to increase then fall down and stall. It seems as if the PCM is shutting down and starting back up. ( Like the key is turned off and then back on quickly, but the engine doesn't recover)
When warming: This issue becomes more erratic, but when hot the engine is fine. No issues, and it will drive all day long with no hesitation.
The truck has over 200K on it, but I know it will go more! It is a mannuel tranny, and is a 4X4, and I love it, I can't get ride of it just yet.
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I have Toyota Prius 2006 with about 58k miles. For the last 12-16 months I encounter the following problem: when I press brakes, I hear knocking noise. It doesn't happen every time, but when it does it only happens when I press the brakes. Once I brought my car to a Toyota dealer and waited for an hour until my car was taken for a service. Mechanic found no noise. I tried to produce this noise but my car didn't want to cooperate. I don't see any messages on a display screen. It happens with power on/off and pressed brakes. What the knock is and how to get rid of it?
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I purchased a 2001 Prius with 123K miles about two weeks ago. I knew the HV battery was shot when i purchased it. I decided to see if I could rebuild the HV battery on my own.
I'm very mechanical but not the brightest bulb in the room when it comes to batteries and anything electrical.
So here is where I'm at so far:
- I removed the HV battery.
- safely rested it on 2 horses (I used horses because it would give me easy access to the bottom to remove the bottom screws)
- Removed all 38 modules from the battery pack
- cleaned the busses in vinegar
- inspected each wire that connects between buss and the nut.
- tested each battery ( one of the batteries tested at -0.1, the others tested at 6.8)
- I don't know how to load test the modules, so I couldn't tell if they would drop dramatically under load, so I ordered 38 used replacement batteries off of Ebay. (Gen II)
- these replacement modules were about a half inch longer than my original modules.
- The replacement modules arrived. I cleaned the terminals, tested each one and installed them.
- Connected the battery back into the prius.
- Installed new 12V battery from the Toyota dealer.
- The Prius started right up.
- Drove it around for the first time for about 10 minutes.
- When i was driving it, the monitor in the Prius would show the engine running most of the time but sometimes it would show it charging the HV and other times charging the 12V. the engine would shut off at stop lights and resume when I pressed on the gas pedal.
- while driving back into my driveway, all of the warning lights came on and the battery fan kicked into high gear,
- I can't remember the code I pulled but it was in reference to the cells being out of balance I think. I'll have to check it again tonight when I get home.
- I removed the HV and tightened the nuts around the busses hoping the issue would be resolved.
- I was able to drive it only a few minutes before the issue returned.
other issues I noticed.
While waiting for the replacement batteries to arrive, I did the following:
- changed the cabin filter
- did an oil change.
- changed the tranny fluid and removed the tranny pan to clean out the slime and clean off the magnet.)
- changed the rear brake shoes.
- changed the front brake rotors and pads. ( they were in awful condition due to sitting so long)
***when I pressed on the brakes, only the rear brakes seem to engage, not the front. I never attempted to bleed them because I know only the dealer can do that)
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My 2010 with 110k is now making a single yet audible "click" sound when I accelerate off of the line. It makes the same exact sound each time I press the brake pedal at speed. Just one click, not a continuous clicking. What's wrong??
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Today was the second time I have walked into the garage and heard my Prius making a weird noise. It's not the noise that comes from the front when you open the door or press the brakes....It's coming from the rear of the car. It stops when I press the start button. I made a video of the noise (nothing to see, as it was dark in the garage, but you can hear the noise.
My concern is that it's something running that will wear down my battery if I happen to not notice it is doing it sometime in the future.
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About a week after I picked up my "vee" one of the passenger side brakes started to squeak when I would leave the house only after sitting for a while. Is this normal it only seems to be happening on the passenger side. I am thinking it might just be some condensation on the rotor or something but its definitely only coming from one wheel and goes away after driving about a block.
I am planning on having the dealer look at it as there is already a seat squeak / groan. I know where its coming from but I will leave the dealer to fix it.
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My brother-in-law has an '04 with ~160K miles that we're potentially interested in picking up from him. It's been sitting for awhile with the parking brake on. When going to try it out today I released the parking brake (it seemed to release okay) but both rear wheels were stuck. I drove it a few feet and the left rear freed up but the right rear would not budge (multiple attempts.) It was dragging on their driveway and I could barely get the car back out of the way.
Looking for (videos, manual, etc.) how the parking brake works? Is there an external adjustment I can reach or some place to try to release the cable? We had an '06 that our daughter now drives but I've never had any issues with rear brakes in 200+K miles on that car.
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Today was a very warm day... I pressed on the air conditioner button.. On the screen it looks like everything is ok.. But actually nothing happens.. The air conditioner is not turning on at all.. What can i do?
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Its a 2005 model with 45000 miles on the clock, so low mileage for the year. The problem with it is the engine starts up ready fr a journey, and as soon as the accelerator pedal is pressed, the engine cuts out.
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I have a gen2 2007 prius (right hand drive). Problem I am having is [INTERMITTENT]when pressing the ignition button to turn off the car. When I press the button the system completely shuts down instantly and rather roughly and nothing is active (the Key is still in). I then remove the key and the system starts up! I then press the button to stop the system, put the key back in and restart it. It then works fine - until the next time. Clock resets itself as does the climate controls. Not sure what to make of this. I have just recently replaced the 12v battery in the boot.
PS. Forgot to mention that when the system goes dead, if I fold down back seat and thump the floor panel above the battery under the seat the system goes on?? Any clues. Will take it to mechanic as soon as he gets back from holiday!
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I'm hearing a squeking noise when I go over bumps and when I i press the brakes. sounds like it could be my springs or some such related thing.. Could it be a different front end issue?
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My car has three codes P0102 - MAF or VAF Low Circuit Input, P0030 & P0050 which are signaling O2 sensor issues.
Car symptoms are a hiccup type sputter when accelerating for the first few times after starting the vehicle. The RPMs will drop down under 1000rpm and it will come back without taking my foot off the gas. The power comes back faster if I flutter the pedal. The last few times it stalled while taking off.
After the car is warm, it runs better smoother. I'm also noticing slightly poor fuel economy. The exhaust smells rich to me.
I'm wondering if there is a fuse that could cause all three codes? Seems like a power problem? Where is the fuse for these sensors?
Should I replace MAF? Can I use the MAF from a 2004 2.4L engine that's at the junk yard? How to proceed.
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2004 Prius base
191K miles
There is a squeaking (for lack of a better term) noise from behind the dash..
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All of a sudden, my 2008 prius, basic package without the smart entry system, stopped locking or opening the doors when i pressed the button.
At first i thought it must be a dead battery, so i replaced it with a new one and got the exact same behavior. i checked the old battery and it was still giving off 3 volts as was the new one when i checked that with a volt meter. when i press any of the buttons on the key, a small led light goes on and on the dashboard a picture of a key lights up briefly. the owner's manual does not show the key as a warning light.
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I recently crossed 21 K miles in my Saturn. The brakes make a squeaky sound every time I press them. Is this a sign that the brakes need to be replaced?
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