Prius (Gen 2) :: Light Tapping Sound In Brake System When Engine Is Not Running?
Mar 11, 2015
I have this light tapping sound that I don't believe is native to the otherwise healthy Prius II I'm currently driving. Mine is a 2007 Prius II with about 106,000 miles. The sound occurs persistently when the vehicle is ON but the engine is not running and the ventilation system is off. If I press down on the brake pedal I hear a light tapping similar to tappets in older cars.
But since the engine is not running at this point I don't think the problem is there. If I let up almost all the way on the brake the noise goes away. I bought this car with 103,000 so I know there may be things that I need to tend to. I'm not experiencing any braking problems. I'd rather have some idea of what's making this sound before I check with a mechanic and incur a few hundred dollars of expense.
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It is a 2002 or 2003 Chevy truck with a diesel engine. He was going down the road the other day under normal driving conditions when the motor made a racket and then white smoke started coming out of the back like a chimney. The truck will still crank and run (and smoke), and now there is a knocking or tapping noise that is coming from the engine. The engine is running kind of rough, and has the tapping or knocking sound, but it will calm down for 1/2 a second at which time the rough idle and noise stop, but quickly return. There is no engine code showing, so my code reader is useless. I once had a Chevy 350 with a spun main bearing that sounds similar, but the motor didn't idle rough or smoke. I don't know enough about diesel engines. I was told there was a possibility of a bad injector pump or bad injector itself. Is there any way of testing this yourself, or does it require a shop trip?
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2005 F-150 4.6L 2WD, 268,000 miles....
Recently I got a flashing 'Check Engine' light and a rough running engine (along with a tapping noise) when I was passing someone (and pulling a trailer). I retrieved codes 300, 304, & 305. I can't swear to it, but I think the tapping noise started at the same time as the coil problem.
I replaced coils #4 & #5 (later that same day) and the engine smoothed back out but the tapping noise is still hanging around. The noise speeds up at higher RPM's and doesn't go away if I shift into neutral. Oil level and pressure are fine and I only use Motorcraft 5W-20 and Motorcraft filters (and change the oil every 5K miles).
Not sure if this is relevant: I think I have bad valve guide seals (blue smoke after long idles) but no other problems that I am aware of. It sort of sounds like a lifter, but is there a good way to pin it down? Is it possible that this tapping is related to the bad coils?
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I purchased an '07 Touareg within the last 30 days. Right after purchase, I began to hear a tapping/flapping sound from the front passenger side, seeming to be somewhere in the dash.
I currently have it at the dealership and have been getting mixed answers. First they thought it was something they could fix and today I was told that it was a "normal sound on a Touareg".
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My hybrid system warning light came on last night in my 2005 Prius with about 89,000 miles. The car may have run out of gas (I wasn't driving). This car will only take about 8.5 gallons when the fuel light starts flashing. I started it this morning, light was still on, only 2 bars on battery, my car usually runs near the green, and the gas engine stalled after about 30 seconds. The gas indicator was flashing, so I added a 1/2 gallon I had at the house, and unplugged the 12v for about 10 minutes to clear the system. Upon restarting, fuel light was still flashing, but no hybrid warning light. Drove a few miles, filled up with gas, and drove another mile.
So my question, could running out of gas and driving a very short distance (light came on as my wife turned into our driveway), cause this warning light to come on? If so, will there be any lasting effects? Did unplugging the 12v battery clear the computer codes, or can I still get these read to learn more about what happened?
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I like to stop for a morning coffee en route to work, about 2 minutes out of my driveway. I'd like to keep the engine running during that time to continue warming the cabin, so I have some chance of taking my gloves off at a traffic light rather than once I'm on the highway. It's about 90 seconds that makes all the difference.
However, only a fool would leave it running and unlocked, while running inside the store. The keyfob can't lock the doors like this (it's ignored while the hybrid system is on), so I use the hard-key once I'm outside. However, that's slow and fiddly, especially with gloves, especially unlocking it again when I come out with my purchase in my hands.
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I charged the almost dead 12v with a slow charger and it is fine now. but immediately after charging the brake system light came on. I believe brakes are just fine, and want to reset the light and see if it will ever give again.
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At just about 21800 miles and 19 months service this morning the brake system warning light came on. This is the yellow brake system warning light, not the red brake warning light or the generally similar looking yellow low tire pressure warning light. No other warning lights are on in the service indicator panel. What troubleshooting can I do myself before taking it to service facility?
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2008 Prius touring model, owned since Dec 212. Brake system warning light went on when our rainy season started and went off briefly, but is now on all the time.
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This morning, during a routine drive to work in my 2007 Toyota Prius, my instrument panel lit up with the brake light and ABS light. The car braked normally, although when I tested the anti-lock brakes in a parking lot, the car slid and the ABS did not engage. I brought it to a shop - they ran a diagnostic and came up with a Malfunction of the Hydraulic System - right rear. They said I need to take it to a dealer for repairs. This car has cost me a lot in repairs over the last year...and with 170,000 miles, I'm not willing to put in a lot more.
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I have a 2008 with a tapping sound from engine - Sounds kinda like a diesel engine when cold. Not real loud.
It stops once the engine is warmed up. Is that most likely a tappet?
88,000 miles... I bought it two months ago with an extended warranty.
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I bought a 2009 F-150 King Ranch a few months back. It has 125k miles on it and the only aftermarket thing on it is some larger tires. I love the truck but twice now (at two totally different driving instances) I have started hearing this bad sounding tap in the engine. The majority of the time it has ONLY been when I am in drive or reverse. I can especially hear it if I am going through a drive through. Anyways as I was backing into a parking space today it started making an even louder tapping sound. I recorded it and have provided the link to youtube..
It continued to make this terrible sound until I revved it slightly and then it went back to normal idle. This all started as I was in reverse backing up but this is the first time it has continued even into neutral. Really hoping for not terrible news on this. Ive read about the cam phaser issue and nothing has been done to those yet. It is the 5.4L and a 4x4. How to fix this and not have a clunker for a truck...
Here is the link to the youtube video of the truck running... it was too large to be uploaded on here : [URL] .....
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We have a 2005 Avalon that was leaking oil from the oil pan about 8 months ago. Took it into a local shop and they pulled the engine and repaired the leak; everything seemed normal. Fast forward to a couple of months ago and the engine started developing a tapping sound from the valve cover. Over the span of 2 months, the tapping had become significantly more pronounced. It went from barely audible to HOLY $#!% we can hear it from inside the cabin at freeway speeds.
We finally took it to the dealer and the problem was so much worse than we were expecting. They only pulled the front valve cover, but two of the hydraulic lifters had a ton of play in it and there were very large flakes of metal in the oil. They also found whopping amounts of RTV along the seam where the timing chain cover attaches. And it was a ton! You could see goops of orange stuff all over the inside of the timing chain cover seam. While Toyota wasn't able to find the exact cause, the working (and very likely) theory is that the excess RTV broke off and blocked some of the oil ports (and possibly did damage to the pump), thereby starving the engine of oil and causing excessive metal on metal wear.
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My 2008 Prius has started making a noticeable soft whirring sound whenever the engine is running. You can hear it both inside and outside of the car. The sound lasts exactly 30 seconds, then pauses for 4 seconds, than repeats . When the car is turned off, the sound can be heard for about another 10 minutes before it shuts off entirely.
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I bought a use 2009 Matrix S 2.4L (2AZ-FE) with about 81000 miles on it. when the car is at idle i hear a light tapping sound on the passenger side. It sounds like the engine but am not sure what it might be. What is causing the tapping sound and how to fix it? (i saw some ppl post about the OCV.) The car also has a light vibration when am at a stop n in gear. Its annoying because i bought a car not a tractor.
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I started getting this weird sound after 10K miles service. I noticed it when i parked my car in the garage and the engine was off. I get this sound with or without turning the AC.
It sounds like a very fast tapping/clicking under the hood. (it is like a cooling sound but much faster) ..I don't think i got this kind of sound before. I don't know how to describe it.. Here is the youtube link: [URL] .....
It usually last for 30 mins-ish... Is it normal?
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My 2001 Prius makes this sound when the engine is running. All the battery lights are on all the time, I think it needs a new HV battery but I'm not sure if it's worth it. Perhaps the other battery is faulty I really don't know. All the engine lights are on and if the brake light comes on it starts shaking or the power steering fails or it just completely shuts off on the road no lights no power steering nothing. When that happens I use a battery booster that I keep in my trunk to get it going again but it's really dangerous to drive now.
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I have had no issues with this car of 120K miles until today, although my MPG has decreased to 35 MPG. The following lights came on with a loud beeping sound : Brake warning lights, malfunction indicator light, master warning light and the hybrid system warning light. These stayed on for 25 minutes and then went off. I drove 12 miles without any issues with all the lights and sounds beeping.
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The EMS service in the county next to ours lost one of it's new trucks for a few days on Tuesday. While going on a call, the engine made a tapping sound for only a few seconds, then a loud pop and shut off. Ford dealer went and picked it up and took it in for evaluation. VERDICT: Broken rod and cracked block. I have to say, this is the first I've heard of a 6.7L having a problem like this in our area.
Ford was really interested in this engine, as a new one is already on the way and the old one is to be shipped back for complete breakdown. So far, the Director and County Manager have been impressed with Ford's response to this problem. Dealer has told them the truck should be ready by the middle to end of next week. If I hear anything else, I will let you know. Any engine can break at any time, I'm just glad they are moving quickly to rectify the situation.
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I have a 2002 prius with 147612 miles on it and a problem with my braking system. When I turn on the car the ABS and Brake light turn on and there is a high pitch sound that beeps continuously. Sometimes after a while the warning lights and beeping stop only to return a little while later. I can drive the car when the warning lights are on but i have to press harder on the brakes than normal to get the car to stop and the braking system feels looser. However, when the warning lights turn off I can brake as i normally do and the system feels normal. This problem goes on intermittently as I'm driving.
I took the car to the dealership today and paid $143 for a diagnostics and was told that DTC C1251 was retrieved from the diagnostic computer. The technician told me that the ABS Motor is bad and because of that the car thinks I'm skidding so the ABS shuts off. He recommended that I get the ABS Motor ASSY ( Part #47071-47010) replaced.
Also, I read a post to resolve it by flushing the brake fluid. I checked the brake fluid level in the cylinder and it is at the max level and there aren't any leaks. Would that be an option?
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When i brake completely when im at a red light my 2007 prius makes a knocking/clunking sorta sound... What could this be?
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