Prius noise when idle. Passed both with no codes or problems and was pleasantly surprised with the 3 life expectancy tests - 75, 75, and 77%. Occ installed off pcv. Jul 6, 2017 · 1) The remanufactured battery is going out. Your red blood cells take about 3 months to turn-over. It seems louder some days more than others. The contact owns a 2008 Toyota Prius. I noticed it after I got home and started it up again. Common sources of dirt in the fuel system include old fuel, dust, and dirt. Mobile1 0w20 oil. Both the wheel bearing (easy fix) and tranny stator (expensive) will change in pitch according to your driving speed, so if yours does not, you probably aren't hearing either of those. Vacuum Leak. Noise is first noticed once i get over 15mph ish. The symptoms you described says normal brake wear, but the sound Feb 10, 2017 · CO is very reactive, so it 'sticks' to your red blood cells (Hb) and is almost impossible to remove. There are gadgets that can tell you what speed (there are 5~6 speeds), and battery temp as well. It is a great car. Page 2 of 2 < Prev 1 2 I have a 2021 Prius Prime with a little over 8k miles. Shut it off and re-started ok, but very concerned. Dec 14, 2019 · chrillermiller said: ↑. Didn't notice it when I was inspecting it or driving. The three most basic things to check are ignition, compression, and fuel. Nov 13, 2022 · 2007 Prius Weird noise when idling/braking Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by sarahs , Mar 19, 2023 . Jan 23, 2020 · The egr system design is faulty, which causes carbon buildup thru out the whole system, including the spark plugs. Oct 21, 2012 · In that case you might have a new kind of hum we're not as familiar with. Sep 6, 2013 · All those things attach to the throttle body and may not have been securely reattached. To be specific when the acceleration level is at P letter of PWR. The contact stated that while driving at 35 mph, there was an abnormal noise coming from the front passengers side. Noise from under vehicle after turning off the hybrid system: . You should also consider replacing the small screen on each head which they use in the external oil line which feeds the oil to them. Aug 17, 2020 · Vehicle: 2008 Prius. Vehicle: 2012 Prius. Sep 11, 2018 · Here is a guess. Apr 26, 2018 · Easy fix for a common passenger-side vibration for Gen 3 Priuses. Should begin to throw codes sooner or later. Feb 4, 2007 · Help needed: Booming Resonating Noise in Cabin at idle and low rpms. It's making a weird grinding noise and I can't figure out where it's coming from. The vehicle was taken to an independent mechanic, who diagnosed that the engine mount became loose and needed to be replaced. However, over time these mounts may wear out and cause vibration while driving at idle speeds. Posted via the PriusChat mobile app . 3. Saving a couple bucks per fill up can do real damage to your engine. Mar 14, 2013 · It could be an exhaust-related noise. The junction between these two parts is a clamp, and if you don't re-tighten it there can be un-metered air entering the intake cycle. Model: IV. #2. No coolant or oil loss (knock on wood) EGR / intake system cleaned. The company states that a constant 3% load makes your PC’s fans spin faster. The past couple of days it has had this rumbling when I start the engine. That does sound like a phaser knock, and you can use a mechanic's stethoscope to localize the noise. If the bumping sound goes away as the engine heats up it is almost surely exhaust system related. It's most likely to do with a faulty servo that controls the vents on your HVAC. You should not be concerned. I have a 2009 Prius that is making a terrible grinding sound when the engine first turns on. CVT fluid changed. Check your engine coolant level. The inverter often makes a high-pitched noise when the Prius is READY. I had an annoying noise that was driving me crazy while driving the Prius Gen 2. Additional source. My 2008 Prius has been running just fine, 1000 miles until my next oil change. Check engine light on. Apr 16, 2018 · 2016 Prius. Dec 27, 2007 · I have a 2005 Prius with 55k miles. Sounds like you've pretty much covered the ignition angle. The troubleshooting procedure is shown in this video, how we diagno Jun 22, 2010 · It can also rev. My observation is that the fuel injectors will spray badly at startup then start spraying correctly when warmed up. Dirt, grime, and other contaminants can build up in the fuel system over time, leading to clogged or blocked fuel injectors. #4 xliderider, Aug 16, 2021. Mar 9, 2016 · 2010 Prius. I recently noticed that the engine coolant "heat storage pump" (someone please educate me on the correct term for this pump) is making an unusual noise. Since he replaced the mechanical engine water pump, Prius gets air lock easily. 2. Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by renovator20, Jan 7, 2014 . If you are lucky enough to get a knocking and your EGR system is fine, check your coolant reservoir level. Oct 25, 2017 · New Yawk. I think of it as "shivering". If the former then look at all the plates and tap on them when the exhaust is cool and see if you find anything lose corroded or worn. Apr 4, 2007 · Discussion in ' Prius v Care, Maintenance and Troubleshooting ' started by desmondlee, Sep 13, 2013 . 2010 prius. Jan 21, 2011 · Model: III. If your coolant level is low, chances are Inverter Pump Failure Noise. Sep 7, 2019 · Spark Plug Wires – While only some models and engine combinations of vehicles today come with spark plug wires (a lot are now coil-on plug), if your Prius happens to have them, they can go bad and cause a rough idle. Jan 7, 2014 · Louder Engine Noise. Oct 1, 2022 · Here are eight reasons why your vehicle might be vibrating while idle: 1. It changes pitch when I start applying brakes again even lightly. Jun 11, 2018 · N/A. It’s the high pitch buzzing/whining. My name is Eric and I also have a 2007 Prius making ticking noise . Apr 10, 2021 · Knock, knock! Who's There? Cylinder Number 1. Here's a video where you can hear it. #2 Air_Boss, Oct 26, 2017. Prius tests. This was (is) is a widely known problem. Turn the heater temp to high and let the engine warm up until the thermostat opens (If it will run). Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by belbert@metrocast. Engine mounts serve to securely mount the engine to the frame of a car, helping reduce vibration and noise while keeping your engine in its correct position. Bad engine mounts. The whole car shakes and rattles. She has 150000 miles. Sounds like something vibrating at engine speed, bumping into subframe or some other structure. I just purchased a pre-owned 2016 Prius 3 from a (Subaru) dealership. #T Jul 6, 2014 · Location: Oklahoma City, Oklahoma. #3 car compulsive, Apr 23, 2013. Any experience and advice would help. All I have done is fluid changes, 12v battery replacement, and tires. edthefox5 said: ↑. It seems to be getting progressively louder. Oct 2, 2021 · Most likely either the exhaust heat shield or the cat core itself. Doesnt affect fuel economy, just alarming. Any lower or higher and the noise goes away. Jan 21, 2012 · I parked my 2011 Prius Five in my garage for a day, started it and when the engine kicked on I turned it offnot letting it go through the entire warm up c Sep 5, 2019 · QRP Tensioner Pulley Bolt Socket - Toyota 1ZZ 2ZZ All. It occurs when the Prius engine is cold (soaked at ambient temperatures below 50 degrees F) and it is started for only a few seconds in order to move the car from one location in the drive way to the garage (or something similar). Here’s a great video on how to diagnose faulty plug wires with a multimeter. if the battery is "fully" charged, as it will try to dump the excess charge by spinning the engine with the electric motor. Model: Five. 2) Engine sound can be valves out of spec (more of a clatter) or bad connecting rod (knock). On hard acceleration when the engine RPMs would get over about 3000, I would hear this rattling/fluttering noise. For the past couple months I have had a humming coming from the rear of the car. Oct 30, 2007 · Possible clue: I notice that the valve noise is a bit quieter when the engine is on but not charging the hybrid battery as when it is making heat. Greetings Gen2 Prius owners, I just wanted to share my experience with you all about a noise I chased for quite a long while. I'm hearing a rattling sound when accelerating up a hill or from a stop. Close to 300,000 miles : r/prius. Now, the pump has an additional "groan" sound. Nov 9, 2012 · I owned a 2010 Prius Gen III which had an engine vibration problem at start up. I also have a 2007 camry hybrid and it doesn't have that sound, also my friend has 2011 prius and said that it didn't have that noise either. After you remove the serpentine drive belt, rotate by hand the engine coolant pump pulley as well as the idler pulley, to see which feels "rough". Pearl will "idle" in the cold at over 1200 RPM, trying to keep warm. In instances like this, the muffler or tailpipe probably needs to be replaced. It will run rough until the computer adjusts the mixture. But the rattle/knock cold start and rough idle on cold start doesn't appear until the spark plugs get carbon buildup on them causing misfired on 1 or more cylinders. If you need to be using premium fuel, use it. The wrong fuel can also cause a knocking sound. no noise when parked at idle or in "maintenance mode" (where the gas engine is forced on). Watch my video to find out what i did to finally fix this irritating noise. jtburns3 said: ↑. Motor is toast. If the noise is your lifters (also known as lash adjusters), I suggest you go to a reputable auto supply store such as NAPA and ask them for an additive to quiet them. Clean it first. $2600. I can hear it at very low speeds some days. #3 · Oct 17, 2020. Will do. I own a 2014 Prius with 97,130 miles and am experiencing a rubbing/scratching/grinding noise from the left front wheel area. The most common reasons for there to be high-pitched noises coming from under the hood/bonnet of your Toyota Prius are having a belt slip (drives accessories like air conditioning, power steering etc) or having a vacuum leak from your air intake hoses being worn or cracked (most common noise when accelerating). Nov 30, 2016 · Two. Before the batteries were replaced I had one of the rear wheel bearings replaced. There is noise with the air turned off or on. If the Noise is coming from closer to the front bumper it's the Inverter pump failing. Garage temp likely 10-15 degrees higher than outside air. I have now noticed the engine/drivetrain is louder when driving at highway speeds. Just started - i was on a highway trip, and noise started while on the highway - noise has stayed about the same since then. net, Oct 13, 2014 . bwilson4web likes this. A good, experienced mechanic should be able diagnose it immediately by ear. I own a 2007 Prius Touring w/120kish miles. To clean the throttle body you had to remove the air cleaner assembly. Bad fuel can cause your Prius’s engine to knock. . This is air that has not passed by the MAF. Aug 22, 2019 · Toyota Prius Generation 2007 engine sounds, was it normally? If everyone knows please let me know. The noise is worse at idle and low speed. I took my 2013 Prius v in for it's 5k maintenance - I asked if there was a fix for the brake noise and they said there was a new bulletin just recently issued. If you turn it off and the noise stops then you'll know for sure. -Chap. Dec 1, 2010 · I have a 2002 Prius with 170,000+ miles. If it's closer to the firewall/interior of the vehicle it's the 3-way coolant valve failing. If you happen to have a faulty ignition coil and/or bad injectors, that could be the cause of a misfire as well. I have an 09 with 115000 miles. Apr 16, 2017 · Like I said, a Prius is never OFF and makes a lot of strange noises all the time, even many many hours after you leave it. Start shopping for new long block. There is no vibration when coasting (100 MPG on the gauge/meter on dashboard) or when I am accelerating pretty modestly. Aug 22, 2016 · (And to be clear the SOC is usually 50-60% so it's not at the 40% when it usually turns on) So fearing the battery was going bad I got an OBDII and did the Dr. May 15, 2020 · Sure does sound familiar; cars have been having misfires as long as there have been cars, even cars without EGR and cars without failed head gaskets. You only gave us 7 seconds of sound, but that sounds like the inverter coolant pump running. Thanks for Oct 17, 2020 · Vehicle: 2009 Prius. The only sounds I hear in my quiet garage at cold startup are charging of the brake system when I open the door, beep when ready after hitting the start button, and the ICE starting about 14 seconds after hitting the start button. They recommended plugs, coils, EGR cooler and valve. #1 and #2 will hopefully resolve your issues. For example the fuel evaporation leakage check starts approximately five hours after the hybrid system is turned off and you may hear sound coming from under the vehicle for several minutes. Aug 23, 2013 · 1. Its only at idle. Model: Two. Sometimes a few seconds after the start. Model: II. If the battery is running hot and full speed fan it might be going. Jul 16, 2018 · Is my Prius supposed to make this noise at Idle? Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by dhman2006 , Aug 18, 2018 . It most often happens when the Prius C has been shut off for some time – or when it has been shut off for a while, moved a short distance and restarted some time later. Transaxle does not knock. I kinda don't believe I didn't notice it until now 😅 Apr 9, 2018 · Touring. It started a month or so after I had my spark Apr 27, 2015 · Two. It only happens when I start moving, when slowing down/stopping, and when I'm driving below around 15 mph. Jun 7, 2015 · This is for the cold/warm start knocking that lasts for a few seconds when you first start the car then disappears. Oil level is great. A perished isolator/mount, perhaps. 2006 GT - 5MT - 321rwhp 333rwtq. If you continue to hear it, could be it's running at higher or top speed. Model: Four. Sometimes, an exhaust system clamp gets loose, creating a rattle. Vehicle: 2012 Prius v wagon. What’s this noise on my gen 2 prius. This post relates to a loud knocking sound that is only occasional. Key-Rei, Oct 2, 2021. Apr 10, 2015 · 2012 Prius c. If it fails your brakes should be really bad stiff pedal and poor braking and lots of codes on the dash. If you are exposed to too much CO, it will keep building up in your blood, and make you slowly suffocate over days / weeks / months. Location: Whitehouse Station, NJ. Started horribly knocking, shaking a few weeks ago. change engine and inverter coolant. We are currently experiencing a huge booming resonance at idle and low RPMs. It ran perfectly yesterday, but when I started it today, it sounds really loud, like maybe the catalytic convertor, muffler, etc is now shot. Dec 16, 2009 · From the owner's manual: . Aug 20, 2014 · 555. If your 1ZZ pulley has a black plastic cap covering its bolt head then it is more likely a standard Torx bolt. #6 ChapmanF, Nov 12, 2012. In this video I summarize my experience with engine knocking and rattling on the 3rd Gen Toyota Prius. Feb 6, 2024 · 4. 4373 posts · Joined 2007. If the latter, not much can be done other than a rather expensive cat replacement. It might not fix every noise but it has helped a lot of people. Consider the possibility that the noise is coming from the idler pulley, not the engine coolant pump. My 2010 Prius engine shakes/vibrates when the engine is showing between 50-75 MPG on the gauge/meter on the dashboard. I've seen ours get up to around 140F and fan speed 4 (monitoring with scan gauge Mar 16, 2019 · Two. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction. Model: Three. Another cause of rattles under the car is a failing catalytic converter. 0. Previously, I would describe the pump sound as a fast-paced diaphragm pump low pitched clicking sound. If your pulley has an exposed bolt this is the right tool. Model: N/A. The car probably eats engine oil and was allowed to run so low on oil the check engine light came on from lack of oil pressure. Jan 16, 2023 · dcm0123. I have an 04 Prius with 140,000 miles also, so there is no question that the noise is abnormal. Aug 29, 2019 · Fuel injectors are responsible for delivering fuel to the engine, and a dirty fuel injector can cause problems such as a rough idle. change your spark plugs. This happens at all speeds up to even 68mph. Picked it up after 2 days and upon starting heard a very loud rattling sound from engine; as if it were going to drop right out of the car. Dec 12, 2012 · Vehicle: 2007 Prius. The sound also appears in neutral and isn't affected by application of brakes. My son has a 2010 Gen 3. As soon as the ICE engages, it sounds like a hemi. Only when accelerating very softly. I usually hear it after i come to a stop and idle for a few seconds Oct 16, 2020 · Bullitt95. 225,000km. Dec 18, 2006 · Vehicle: 2007 Prius. It had one owner and clean history with about 22,000 miles. Vehicle: 2014 Prius. I recently had my oil changed at Toyota dealership at 11,700 miles. According to HP, one of the leading PC manufacturers, an unnecessary process consumes 1% to 100% of the CPU. On highway, no passing power, system seems to not try enough to charge the battery and it gets to 1 or2 purple bars. 2005 prius making weird clicking noise while in idle and drive? Close to 300,000 miles. Stops both times 15+ seconds while she waits, performing no other functions save possibly bumping up heat temp, adjusting radio, etc. toyota prius hybrid engine rattling, shaking, misfiring heavily, No DTC stored in the ECU. It's a common problem on 3V engines if they've been revved hard (and they do love to rev) and if oil changes have been neglected. Good Morning all- I'm at my wit's end. The rattle or engine knocking is only happening when the hybrid system indicator shows power in the red zone. I talk about when the knocking problem first appeared Oct 26, 2015 · > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, My car is making this noise. sarahs New Member Sep 8, 2021 · Vehicle: 2007 Prius. Very odd. New plugs, pcv. Not every headache is a brain tumor. will let you know if it solves the noise problem. Aug 9, 2019 · So within the last few months I've noticed that my engine now ticks. Vehicle: 2011 Prius. These were 3-4 starts at least a few hours from each other. clean maf sensor (same place as throttle body) 4. Approximately five hours after the hybrid system is turned off, you may hear sound coming from under the vehicle for several minutes. It seemed to come from the passenger side of the engine compartment, although my wife said it sounded Dec 25, 2011 · 2010 Prius. Was showing Generic Missfire codes and missfire on cylinder 1, 3, 4. Just one of those real low oil events apparently damages the piston rods and then comes the engine knock. It happens whenever I am on the gas (even lightly) or when coasting to slow down. 3-way coolant valve Failure Noise. #4 Anas Al-Mustafa, Jun 7, 2015. Then after it warms up, it still makes ticking noise at idle and is noisier than it used to be on acceleration. Jan 16, 2021 · Vehicle: 2008 Prius. It has happened in both cold and warm conditions. It also does this when you start to drive and the engine turns on. clean throttle body. Model: One. Brake noise in 2011 Prius when brake pedal is pressed current mileage is at 129k Miles, Toyota dealer technician applied brake software update but no change Nov 10, 2013 · Vehicle: 2012 Prius. Jul 17, 2020 · Failure Date: 07/24/2014. Sometimes, your CPU fans may make a loud noise when corrupt processes overburden the processor. hello guys, my mechanic has cleaned the throttle body on my Prius 2006 and has also replaced the PCV Valve and after driving it for two minutes, i started noticing this weird sound inside my hoodit happens when i hit the brake and i am almost coming to a full stop, i thought first it was the fan but it felt like the engine was revving I just bought the car. Nov 4, 2019 · Wrong Octane/Bad Gas. It reminds me of drive-shaft noise. that would make sense, I have been having issues with the HVAC recently, such Apr 14, 2013 · Michigan. When its very cold-20-30 degrees, it makes a loud tapping noise like a bad lifter for about a minute or so. Yes, noise is immediately present at push of start button in an unheated, closed garage attached to home. Aug 18, 2019 · A malfunctioning PCV valve could be the cause of the rough running at idle/low speed if it's stuck open, letting in crankcase vapors and loosing vacuum, which affects low rpm performance more than higher rpm performance, when the valve would be open anyway. It seems to be a drive-train noise. Neither are super expensive to fix. The inverter coolant pump (located behind the driver's side headlight assembly) sounds like an aquarium pump when the Prius is IG-ON or READY. Nov 6, 2020 · Rust and corrosion also cause the deterioration of the exhaust system itself, which can cause rattles. What the hell is this noise. Using fuel with the proper octane rating is important. The engine knock appeared in cold and warm weather. Corrupt processes. 176. Probably not what happened to you this time, but just for info. Took to local shop. Be aware the G2 suffers from the abs module failure which is very expensive and makes a barking sound. The batteries were replaced last summer. 225,000 miles. Special socket to fit the bolt that secures the pulley to the belt tensioner on most 1ZZ and all 2ZZ engines. Model: ----USA----. Please let me know if you have any ideas! #1 Dylan Peterson, Oct 17, 2020. on qj sd zo ql bu ek hi tt kv