Prius engine knocking. As the car sits over night more water is able to accumulate in the cylinders which is why it’s worse in the morning. The easy way to cause the knocking is to start the Prius with a cold engine and let the engine run for only a few seconds. It hasn't happened in over a year now for me. 4---You may try a different brand of oil to minimize the ticking. When I did this today, I only got ~4 quarts, much less than my prior experience. Things I've done to troubleshoot the problem: * Swapped the following parts with another working 2010 Prius. Back in June the engine was knocking in only the most terrifying of ways. 1. With the wrist pin unglued the piston arm is free to cut a hole down the side of the engine block. Vehicle: Other Hybrid. Apr 10, 2021 · Cylinder Number 1. Jun 11, 2015 · I had a 2010 toyota prius last year which had Engine Knocking problem at startup in cold/warm weather and it was solved by this video after trying everything including TSB's I hope it helps someone out there with the same problem. I just purchased a pre-owned 2016 Prius 3 from a (Subaru) dealership. Jan 7, 2023 · If your engine has worn rod bearings, knocking can occur. That is why I have 2 of those. Aug 21, 2007 · The horrible knocking is not limited to cars with EGR. We're having problem with our Prius where car suddenly started to make weird clunking noise from the engine (28k miles, 2011 Prius). I have a 2008 Prius and recently hit the 85K mark. Car is parked outside in Dec 4, 2021 · In this video my experience with engine knocking and rattling on 2012 toyota Prius v/ZVW40R/1. #4 Raytheeagle, Jan 6, 2018. It involves taking a decent portion of the engine apart, which is above the skill level of most Apr 27, 2015 · Two. Engine knocking, also known as detonation, occurs when the air-fuel mixture in the combustion chamber ignites prematurely. Hi everyone, Just last night my '05 Prius transmission developed an intermittent knocking/juddering sound at start-up. Knocking is bad as it reflects lower engine bearing damage. If you need to be using premium fuel, use it. Just one of those real low oil events apparently damages the piston rods and then comes the engine knock. This start up was after the car sat for 2-3 weeks while I replaced my engine coolant pump, cleaned my EGR system, cleaned my intake manifold, sprayed my MAP and MAF sensors with MAF sensor cleaner, replaced my PCV valve, replaced my engine and inverter coolant, and replaced my spark plugs. 2012 Prius Plug In 247k miles. Same i had a very high fuel consumption reading on my Prius board computer. Jun 7, 2015 · Get all your Car Accessories at https://newcargadgets. So like 10-30MPH. Jun 21, 2010 · On June 9th, 2010 Toyota released T-SB-0146-10. If your Toyota Prius has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. It seems to be an intermittent, rare event. Start shopping for new long block. Sep 20, 2023 · 2010 Engine Knocking/shuddering, help. Should begin to throw codes sooner or later. The original engine was at around 170k Dec 24, 2009 · Many cars use hydraulic tappet capsules, and similar capsules for thrust on the cam-chain tensioners (instead of a spring). Jan 21, 2011 · Model: III. Subscribed. Model: Two. The TSB description is as follows: Immediately following a cold soak startup, some 2009 – 2011 model year vehicles equipped with the. The sound disappears on driving the car a few hundred meters and usually does not reoccur for several months. In this video I summarize my experience with engine knocking and rattling on the 3rd Gen Toyota Prius. Jun 7, 2014 · Placing the car in the maintenance mode, the car will start and idle normally then immediately start and stop the knocking when it switches from HV charging to non-charging mode. Time: 1:30 AM. Now it knocks while driving and after the engine is already warmed. It wont hurt you. Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Pat006, My prius (189k on the ODO) started Jul 2, 2014 · Yes I fell in love with Prius. Oct 27, 2015 · Alot of posters post about top end noise and alot find out they have the beginnings of a spun main bearing. Apr 16, 2011 · Vehicle: 2007 Prius. I figured first I'd address the low reservoir issue. #3 andrewclaus, Feb 20, 2016. - New sparkplugs --> still same problem. Air/Fuel Mixture Too Lean. To be specific when the acceleration level is at P letter of PWR. Attachments are working again! Check out this thread for more details and to report any other bugs. The most common reason that a lifter will tick is because the lifter itself has gone bad. Unfortunately, I am having some problems with it. It seems like the hybrid battery wouldn't charge either. A brief lack of oil on start-up can easily give a brief knocking, until oil gets to where it needs to be. Mar 17, 2019 · "Some 2010 – 2011 model year Prius vehicles may exhibit one or more of the following conditions at initial engine start after cold soak in temperatures below 40 F (4. 4. It's kind of a wah-wah-wah-wah or wuh-wuh-wuh-wuh noise that gets faster the faster I'm going. Do not drive the car in this condition as the traction control is disengaged. 5 C): • MIL “ON” with Diagnostic Trouble Codes (DTCs) P0300, P0301, P0302, P0303. Its not from lack of maintenance engine looks excellent. I would never describe the Prius as noisier than a typical 4 cylinder. Example shown: Problem appears when the car is idling with the AC on. Vehicle: 2008 Prius. Model: II. the other issue may be a clogged egr. Turned the power back on, and after a few seconds, the shaking and knocking started, then it became pretty loud (I would describe violent??) then the check engine light came on. Went to run an errand and was surprised at a rough running engine start in my wife's ZVW30. At 0:22 seconds t May 22, 2017 · The prius runs on 87 octane, but higher grade octane or boosters will not fix the knock. what can cause detonation (the sound you're hearing) is incomplete combustion. They had to replace a piston in the engine because the hole that was drilled in it to accept the connecting rod was too big. The engine starts with knocking, rattling, and vibration that lasts for about 5 seconds. 2012 Toyota Prius v engine knocking. Average failure mileage is 55,600 miles. Be sure to check your owner's manual to find out what octane rating is right for your car. Average failure mileage is 181,000 miles. It has 2 DTC codes P0302, P0401. Average repair cost is $3,500 at 164,750 miles. Okay, so what could be causing this issue. The only solution is to replace the bearings, which is never an easy job. Model: Three. I just recently replaced my head gasket two days ago, and went to go start it up and right away a knocking sound started to appear. Dec 6, 2019 · The knocking will sound very metal on metal. Service Engine Soon Light– P0401 will illuminate the service engine soon light. Causes of 2021 Toyota Prius Engine Knock. The knocking sound is usually the worst at idle, or when backing down off of the gas. Feb 20, 2007 · 2004 Prius. yurtdweller New Member. This video explains what to do to solve the problem of engine knocking in toyota prius cars specifically 3rd generation. 8L Prius, cold-start, engine knock. Oct 16, 2011 · Since it is a check engine light, a generic code reader will be able to get the codes. Model: IV. There was no sign of HG failure in the Gen 1 where I had the horrible knocking. I think you are experiencing two separate issues that just happened around the same time. Oct 6, 2009 · Model: Prime Plus. Vehicle: 2010 Prius. 1) The remanufactured battery is going out. "severe knocking" - there have been reports of a piston wrist pin becoming unglued when the oil is low or engine overheats. If it sounds more metallic, it could be a motor mount, or something that has worked its way loose. Dec 25, 2011 · 2010 Prius. I went to my Toyota garage, but they cound'nt tell me what was wrong, so I did some investigating of my own: - All engine mounts seemed OK. Looking into it, Toyota Jun 10, 2013 · 2010 Prius. 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. On hard acceleration when the engine RPMs would get over about 3000, I would hear this rattling/fluttering noise. Jan 17, 2012 · I have a 2013 Prius that bought about two months ago. Jul 27, 2020 · Toyota Prius Lifter Tick Causes. Feb 16, 2015 · There are many threads here on how to bleed the Prius system, including the need to run the CHRS pump and using the upper radiator bleed valve, or using an "air lift" system. Jan 7, 2011 · Vehicle: 2011 Prius. My friend suggested that I go to reddit to get some other people's opinions. Los Angeles, CA. It had one owner and clean history with about 22,000 miles. The 2013 Toyota Prius has 33 NHTSA complaints for the engine at 57,397 miles average. Transaxle does not knock. I'm hearing a rattling sound when accelerating up a hill or from a stop. Engine knock codes are: P0301, 2, 3, 4, last digit is the cylinder number. " May 11, 2005 · It doesn't do the cold knock currently, but it happened in the past a few times. Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by bwilson4web, Nov 26, 2012. Jan 16, 2022 · A secondary issue is 2010-2014 Prius engines have flawed piston rings that often cause excessive oil consumption that ends up in the egr cooler passages. 5L Prius but we're trying to characterize what it takes to reproduce the 1. 2) Engine sound can be valves out of spec (more of a clatter) or bad connecting rod (knock). Sep 15, 2018 · Start thinking about what your going to do when that battery fails. 2 weeks after that, the same incident happened whenever it wasn't allowed to warm up. With nearly 250,000 Prius in the North American market and the onset of cooler weather, it is time to see how frequently this occurs. The horrible knocking is not limited to cars with failing head gaskets. There may be a slight ping or knocking sound on rare occasions. Jun 10, 2013 · This is also European Prius (Originally from Netherlands). Greetings Gen2 Prius owners, I just wanted to share my experience with you all about a noise I chased for quite a long while. On a cold start, first thing in the morning, there is an irregular, sharply metallic, shaking-the-junk-drawer knock that starts the moment the engine actually fires (a few seconds after MG1 starts spinning it) and subsides after a couple seconds. Unplugging the wires as a way to check for a clogged EGR system doesn't make any sense, because with the wires unplugged the valve will stay closed, which is the same effect as having a clogged EGR system. There are no Check Engine light. It has happened in both cold and warm conditions. Any lower or higher and the noise goes away. Drain the engine coolant by loosening the valve near the CHRS canister and draining into a suitable container. The con rod would rattle inside the hole when the engine was running causing the knock. Engine oil is pushed into the intake plenum, where it builds up, and then sucked into the cylinders upon start up. Car sounds unsafe to drive around, so I left it parked in the drive way. After the dealership tried some of the cheaper fixes, the engine was deemed kaput. Maybe make the cuts 90 degrees apart around the dowel, and label the cyl no for each with a sharp-tipped felt pen. The rods start to tap the crankshaft because of excessive play in the bearings, which is what causes the noise. 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. Last night my 2007 Prius engine started making noises in the engine area. I've started it on multiple occasions (never more than 20 secs) and it doesn't go away. Car unused: ~48 hrs. This can lead to a knocking sound and potential damage to various engine components. A sputtering engine can indicate a number of problems. When you get them, post em up, but of misfiring, they will probably be P0300 through P0304. Some early gen3s with frequent oil changes do better on oil consumption. Afterwards i turned on the car and the engine turned perfectly fine without the loud knocking. Jan 27, 2017 · The 2011 Toyota Prius has 3 problems reported for knocking at start up. Jan 6, 2020 · Michigan. It’s not recommended to drive with engine knocks as it may pose more problems, such as engine seizures. Oct 11, 2018 · Toyota Prius P0401 Symptoms. Stops both times 15+ seconds while she waits, performing no other functions save possibly bumping up heat temp, adjusting radio, etc. Apr 21, 2017 · Model: Plug-in Base. The pcv hose that toyota put on the block it too low and too short. Nov 15, 2017 · 2010 Prius. Start keeping an eye on that battery's charge behavior and not worry so much about a valve ticking noise. I'm not aware of a wide-spread problem with cold-start, engine knock in the 1. and/or P0304. Here are some of the most common causes of a ticking lifter: 1. There was no compression problem and no coolant being drawn into the cylinders. Check engine light is blinking which describes misfire. Harry73 said: ↑. 181K views 3 years ago. Usually caused by running the car low on engine oil. Jul 17, 2013 · Vehicle: 2012 Prius v wagon. Apr 11, 2020 · A few days ago, it misfired on the freeway and again on residential roads, but it was quick. I changed out the original spark plugs at 238k miles. Replacing a lifter is a pretty challenging job. Oct 15, 2020 · Vehicle: 2007 Prius. #5 dick_larimore, Sep 24, 2014. NEW!!! Service Bulletin for Engine Knocking at Startup T-SB 0012-10. There are some pretty nutty ideas in circulation about how the EGR system even works. The prius needs an Oil Catch Can (OCC). My 2008 Prius has been running just fine, 1000 miles until my next oil change. Oct 22, 2023 · Low oil level. Basically, engine knock (also known as pinging, detonation and spark knock) occurs when the air/fuel mixture inside a cylinder is incorrect, which makes the fuel burn unevenly. I had it in a 2001 Prius, Gen 1, which has no EGR. Jan 16, 2021 · Vehicle: 2008 Prius. Apr 16, 2018 · 2016 Prius. Today when it started up there was a knocking noise when the gas engine started. Most recent activity: oil change on Saturday. this can happen when you turn the car off during the warm up cycle. Apr 26, 2021 · 2011 Prius with knocking sound. No fault codes or any other malfunctions were present (yet), just very little shaking when driving on highway steadily around 80-100 km/h and when the engine is settling down at low rpm and lot of torque is taken out. Put the car in inspection mode (youtube: Prius Inspection Mode) and then while its running get under engine and listen with a rod to your ear to the oil pan and see if you can hear some banging in there. Treatment: The first thing I did was put HEET in just in case there was some condensation buildup. The 2012 Toyota Prius has 3 problems reported for unusual noises from engine. The causes of engine knocking sounds may range from bad fuel, faulty spark plugs, or even a dirty combustion chamber. Also, the oil-filter often houses the prime-retainer valve for the oil pumping system. unburned hydrocarbons sit in the intake manifold and the next time you turn it on, bang, bang, bang. 2. A leaking head gasket may allow small amounts of coolant and/or oil into the cylinders (and allow combustion gases to escape through the coolant and/or oil). Apr 10, 2015 · 2012 Prius c. xcntrk said: I've noticed occasionally on cold start the combustion engine has a terrible vibration and knocking that occurs for the first 1-2 seconds of ignition. Oct 12, 2008 · Then shift to P and fully depress the accelerator pedal 2x. I have seen a few separate threads regarding a front rattle/knocking noise on some Gen II Prius. 8K. Not sure if I've heard it do it at speeds above that. I just joined Prius Chat to ask this question. The engine was warped so I bit the bullet and replaced it with a lower mileage used engine. Detonation Knock: Bad Timing. Mar 30, 2008 · The weather had just gotten chilly. Nov 5, 2013 · Vehicle: 2005 Prius. Sometimes a few seconds after the start. My 2012 Prius v, which has done about 47,000 km, has intermittently developed a knocking sound when the IC engine is idle, or while driving at a low speed (under 30 km/h). The sound continues when the egr is unplugged. 8 liter engine. May 10, 2021 · PRUIS HEAD GASKET AND HOW TO DIAGNOSE. • Initially runs rough. com : Car complaints, car problems and defect information Nov 2, 2016 · So after having the prius sit for roughly a few hours, i start up the car and i heard really loud knocking noise and the engine shaking violently and I felt the car also shaking a bit too as a result of this i immediately turned off the car. With a rod knock, if you drain your oil you should notice metal shavings. In this short video, I show how to find out easily if the death rattle in your Prius is the EGR, meaning it’s NOT the head gasket (unless sadly it’s both)Her Jan 1, 2016 · Location: Bedfordshire. Model: Prime Plus. A couple of weeks ago, about a week after my most recent oil change, I started noticing a noise when I accelerate. The 2006 Toyota Prius has 1 problems reported for engine knocking. It sounds like a piece of metal is loose. Vehicle: 2011 Prius. Aug 2, 2016 · Knocking is much worse and sounds much lower frequency and much more distinct. 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. bwilson4web BMW i3 and Model 3. The egr was cleaned to like new. It took a couple days for the engine codes to pop up, and I got P0300 (multiple misfire), P0301 (cylinder 1 misfire) and P0303 (cylinder 3 misfire). Your Prius’s engine is a giant pump. So, if you put regular unleaded in your car that demands premium fuel, this could be the source of your knocking sound. #14 · Feb 14, 2014. Model: Plug-in Advanced. Additionally, if you are getting pre-ignition/engine knock/misfires the check engine lamp should be FLASHING. Keep us posted . May 3, 2020 · 784 subscribers. Temperature: 63F. Jul 5, 2015 · Discussion in ' Gen 3 Prius Care, Maintenance & Troubleshooting ' started by sa177, Sep 4, 2012 . It started knocking when under a load a few weeks ago. I had a jeep that made the same noise. It sounds like something is loose and banging/rattling about, but what I cannot tell. I initially thought the same thing, bad gas and then went with 93 octane and fuel cleaner. It didn't clear the issue. I recently had my oil changed at Toyota dealership at 11,700 miles. But a couple days ago, I was idling a lot waiting for my girlfriend to finish errands, and after another 30 minute idling session, my engine started knocking and shaking hard. I have fresh oil, new battery, and had my car checked about a month ago. toyota prius gen 3 engine knocking solved. When your high mileage engine experiences engine knocking after it warms up, one possible cause could be a low oil level. 2010 Toyota Prius - Makes engine knocking sound at intermittent times. 8L/2ZR-FXEHybrid 4CYL/auto*DisclaimerWe are not responsible for Jul 24, 2019 · So I've had several brief periods of engine knocking on startup over the last couple months, but they went away and my 236k 2010 Prius drove fine afterwards. The wrong fuel can also cause a knocking sound. Those shavings are tiny pieces of the rod bearings that have disintegrated. Oil was very low but had changed it recently. Bad Lifter. So far we have tried the following: 1. No check engine codes, nothing showing up on scanner. You will see the hybrid vehicle icon appear on the MFD and the gasoline engine will run continuously. The Lexus service bulletin about a loud engine knock or rattle noise at initial engine start after cold soak applies to 2011-13 CT200h May 15, 2009 · My Prius had some shaking and knocking sounds from the engine (it felt and sounded as if I had a flat tire) while I was driving. To know if you have coolant or head gasket issue is causing your cold Nov 2, 2023 · Popped the hood, reservoir almost empty and droplets of coolant on underside of car, however not dripping on ground. I can't agree that "sounding almost like a diesel" is normal. (Page 1 of 2) Engine rattle/knocking noise on first morning start up on occasion. once in awhile , the hybrid indicator system will flash “temp” with a picture of Jul 1, 2020 · July 1, 2020 by Jason. Now you have pointed that out I can hear it. I did not change the coils. I bought my GenIII prius a few months back and, after a while, I noticed that the motor would start shaking in low RPM - high torque conditions. Knocking Sound– In very rare cases, a noticeable knock may come from the vehicle. Discussion in ' Gen 3 Prius Care, Maintenance & Troubleshooting ' started by seilerts, Jan 12 May 27, 2015 · My '06 Prius lost power on the highway today just as a loud knocking noise started in the engine. She has 150000 miles. Jan 27, 2019 · There was no knocking when I turned the car back on. Sensor issues can cause the air/fuel mixture to lean out. It pulls in air (where it is measured by the mass airflow sensor). It sounds like it’s having trouble just running the engine. . Sep 8, 2021 · Indiana, USA. Yes, noise is immediately present at push of start button in an unheated, closed garage attached to home. • Loud engine knock or rattle noise. It seemed to come from the passenger side of the engine compartment, although my wife said it sounded Jan 12, 2012 · NEW!!! Service Bulletin for Engine Knocking at Startup T-SB 0012-10 | PriusChat. 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 May 19, 2019 · 2012 Prius Plug-in. Jun 9, 2021 · Use a very very flat/even blade atop the valve cover case to put a mark on the dowel for each cylinder. 1AR-FE and 2AR-FE engines may exhibit a brief knock/rattle noise from the engine compartment for . The past couple of days it has had this rumbling when I start the engine. I talk about when the Jul 6, 2017 · Texas. Posted January 1, 2016. The engine makes a loud knocking noise that disappears after accelerating. Mar 14, 2013 · I took my car for the engine knocking at 34xxx miles to the dealer here in NJ. Again. Here’s my experience with obd2 code p0301. Oil level is great. Got Engine code P0117 - ECT sensor. If your coolant level is low, chances are you may have a failing head Nov 8, 2018 · Hi everyone, I have 2011 Prius Base, 137K. Replaced 12V battery last week. Then press on the brake pedal and make the Prius READY. Sure appears not. I think the noise that's bugging him, is this kinda rapid drumming/knocking, intermittent sound, over top of the regular engine sound. I know that there have been issues with 2010+ Prii with cold engine startups, but my 2012 Prius has had two episodes of the same thing that people have posted and that lastest episode was just a few hours ago and it wasn't even cold, 70+ degrees. We turned off the power at a stop light. 7. Mar 29, 2012 · 50 posts · Joined 2013. This is not the engine mount metallic-knock sound but rather a subtle rattle coming from the front end when going over smallish bumps at low speeds and sometimes accompanied by a slight knock in the steering wheel. Jan 7, 2016 · If this happened after a drive, this does not sound like the rattle on startup issue. Nov 14, 2010 · 2017 Prius Prime. Prius, the trouble code reveled a P0011 Camshaft Position "A" Timing-Over Advanced or System Performance. CarComplaints. It is intermittent and rare but if we can come up with a protocol that reliably reproduces it, we have a chance of getting effective, corrective action. Almost like someone is beating your Prius’s engine with a hammer. When you start it up the engine will knock and shake for a few seconds. Jun 11, 2018 · N/A. In every other driving conditions the engine was runnig perfectly. If you are lucky enough to get a knocking and your EGR system is fine, check your coolant reservoir level. The poll has two parts: frequency and season. I quickly went back in the car to shut it down - and was terrified On restart it was fine and has not happened since. It starts fine, gas engine starts fine as well, after about 30 seconds or more since gas engine starts, engine starts to shake, vibrate, knock so violently that it feels like it would blow up. Shut the engine off and let the car sit for several hours. It ran perfectly yesterday, but when I started it today, it sounds really loud, like maybe the catalytic convertor, muffler, etc is now shot. Our 2008 Prius is making a rattle noise when you first turn it on and the gas engine starts. Garage temp likely 10-15 degrees higher than outside air. Model: N/A. p0301 is the first CEL code this car has ever thrown, and it happened right at 247k miles. In Drive mode at low speeds and gentle throttle, it feels as though the transmission Oct 22, 2019 · It’s impossible to diagnose from here but it sounds like the head gasket has blown leaking coolant into 1 or more cylinders causing engine rattle and the white smoke is probably water vapour. Using fuel with the proper octane rating is essential. Motor is toast. Then check if all the cuts are level. Driving it is very shaky as I gas it at all. Apr 24, 2013 · Vehicle: 2008 Prius. Sep 29, 2020 · Engine knocking could indicate different issues, including low engine oil levels and engine bearing failure. There is some noticeable noise when accelerating hard from a dead stop and it revs high but if it sounds like it's knocking or chugging like a diesel I would be concerned. A few seconds after Ignition ON, the ICE would normally start and the knocking/juddering sound comes alive. i cleaned the hell out of the EGR and changed all its gaskets. edthefox5 likes this. The rattle or engine knocking is only happening when the hybrid system indicator shows power in the red zone. These were 3-4 starts at least a few hours from each other. The one I am discussing here has almost 200k miles on it now. jtburns3 said: ↑. Bought it with ~160k miles on it everything was fine. AS IF THE RODS WERE KNOCKING FOR A MINUTE THE PROBLEM STARTED WHEN THE Oct 15, 2023 · An engine knocking while accelerating is a problem faced by many people in the course of driving. The engine is loud, much louder than our 2012 V and much louder than our old 2010. Jun 13, 2019 · High octane fuels burn more uniformly and resist knock. #10 massparanoia, Apr 25, 2012. Jul 13, 2020 · After booting up Dr. The Prius is difficult to bleed correctly and failure to do so could lead to other problems. 3. The headgasket, timing chain, and rod bearings were replaced. Have you ever ran the car so low on engine oil it threw the engine icon on the dash. Mar 8, 2008 · Remove the flexible air duct where it attaches to the engine air filter housing inlet. The first thing you should do when diagnosing engine knocks is to check the oil level and refill it if necessary. Both issues were redesigned on gen4 engines. Took off splash shields, found a few droplets between the engine and the firewall (driver's side) and on those Jun 7, 2014 · The front (plastik) manifold Intake was (blocked by soot lump), Preventing the hot air coming from the turbo air pump reaching to the engine where combustion takes place, then the engine cylinders goes out of sync, and the knocking and shaking occurs. This post relates to a loud knocking sound that is only occasional. It only lasted 3-4 seconds but it acted as if the engine had an intermittent spark plug failing. Shut it off and re-started ok, but very concerned. The knocking speed rate increases with the rpm. Both 2010. I did check engine oil level and it was at F level. 2010 Prius engine is knocking Again. This sound is not only disturbing to the ears but also has a destructive effect on the engine and its internal parts. The og plugs looked great, no oil no water. Humidity: high. Most of the time, there will not be symptoms associated with P0401 in the Toyota Prius. Aug 27, 2020 · This action creates a "knocking" noise and will stop after a few seconds of run time once the engine has run the coolant out. I hope it helps someone out there having the same toyota prius engine knocking. Aug 14, 2019 · Bad fuel can cause your Prius’s engine to knock. Jan 30, 2017 · P0328 is also a CIRCUIT code, essentially the input VOLTAGE is HIGH. #15 05PreeUs, Feb 4, 2017. I push the start button and the engine knocks, it continues not for more than 5 sec. They mentioned it was the EGR that was clogged, so they replaced it. While originally seen exclusively in hybrid electric applications such as the earlier-generation Toyota Prius, later hybrids and some non-hybrid vehicles now feature engines with variable valve timing, which can run in the Atkinson cycle as a part-time operating regimen, giving good economy while running in Atkinson cycle, and conventional Jul 29, 2014 · This problem has been discussed in numerous threads. Could be when the car was reassembled after repairs something may have not been torqued down correctly. : r/prius. No sign of leakage at sensor. 5. Mendel Leisk said: ↑. Engine knock is among the most disturbing problems a vehicle can have, but not many people know what it is, or how it is caused. Model: III. Has anyone also run into similar issue? #1 txl146, Mar Nov 25, 2005 · Prius cold engine knock poll. The only code they were running was a PO4 code. The noise could be early signs of a head gasket leak, which is not uncommon on a higher mileage Prius. com use promo code P4D4JYXDZJ5Rtoyota prius gen 3 engine knocking solved after trying every TSB Website Dec 9, 2009 · Opened it and the knocking sounds were definitely from the "Electric" side of the front end. Vehicle: 2012 Prius. Low Oil Pressure. Almost two months ago it was around 6 Am when it was around 40F outside. As soon as the ICE engages, it sounds like a hemi. The engine develops a bit of power, maybe to get it up to 30mph or so, and there are no engine lights on. Apr 3, 2020 · Watch this Toyota Prius truck with a nice little bed and click to subscribe to Torque News Youtube for daily It has the 1. Hope that helps. I checked on the forum for 'knocking sounds', but nothing - so thought it was a fluke. go vp sy ii vw ac bh bd qr ap