Dealership says engine knocking means I need a new engine. I have put 3000 miles since last dealership visit. No change in engine. Could this be a catalytic converter or other problem? Do not hear the noise at 70 mph only at 0-40 mph.
View 2 RepliesI bought a 2007 Prius with 198,000 miles on it. Since then I've got it up to 200,000 ish. The previous owners took very good care of it, and did not encountered any severe issues.
I recently took it in to a toyota dealership for the free inspection, and they said it was in remarkably good shape. I asked about the engine noise, and they took it for a drive and said everything sounded pretty normal, at least compared to the prius with 130,000 miles on it that they had apparently just serviced before me. I went ahead and lifted up the hood, set my phone recording at the front of the car, and started it. I let it run for a few seconds, then shut it off.
So after doing some troubleshooting and researching in trying to find out on my 87K 2008 Prius Std "Noise in the engine while accelerating", "Approximately 10% reduction in fuel efficiency, due to lack of power from engine" & "Glide seems to be degrading over time", here is what I have observed.
1) When I push the gas when the car is parked the engine does not seem to rev in a stream, it goes up for about 3 seconds then goes down for 1 second, then again goes up and then down and this keeps happening until the gas pedal is kept press. In conventional cars the rev should be streaming continuously and proportionately to the pressure applied on gas pedal. This almost seems like a misfire, but from the drivers seat I do not hear any blasts, I have never tried this before so I don't know if Prius's are suppose to be like this. Also no Alarms on the MFD.
2) After using the 5.25 oz fuel injector cleaner in back to back half tanks I saw the engine regaining power and hence bettering the fuel efficiency. Does that mean I should get a Fuel Injector cleaning done by Toyota?
The spring (or let's call it a few warmer days) has finally came to Ireland and my sensitive ear started to notice rather quiet clicking noise from the engine. The noise gets faster (you'd get more clicks pers second) when the engine revs up.
It is not very obvious, the two mechanics I asked told me that they can't hear anything and instructed me to enjoy the sun - but I definitely can notice when the ICE starts or shuts down just by presence of this clicking noise.
What's strange, when it has been raining for some time I don't hear it anymore, the engine runs very smooth and quiet. It will keep quiet in the roofed parking garage too - so it is not the rain just masking the sound.
It does not matter if the ICE is hot or cold too. I removed the serpentine belt and have run the engines for a moment without water pomp - but the sound is still there... The oil and filter has been recently changed too.
Apart from that the car runs fine. I get slightly below the typical fuel economy (5.9l/100km = 40mpg(us)) but I think it is still OK: I run only short distances (5-10 miles tops) and decided to ignore the pulse'n'glide technique as it kept my focus off the road.
In my 2005 prius with 17k miles, when I turn the car off, Ive been hearing this loud screeching sound coming from the engine bay area.
View 11 RepliesOur 04 Prius makes a really scary metallic noise at the top of the engine when it is engaged. All maintenance has been performed within 100 miles of the warning light. We are the original owners and the car has 160k miles. No pulleys are touching their surroundings. Make no mistake, this a LOUD noise that has been growing with time. No warning lights,,,oil level is fine,,,and no metal visible on the dipstick. Sound is originating at the top of the engine and is not a "knock". It is more of a metal on metal type of noise.
View 4 RepliesDeveloped a whining type noise in my '07 prius engine compartment. Noise only there when gas pedal pressed. If I let off on gas the whining noise stops.
View 9 RepliesI have a 2006 Prius with 215000 miles but the engine developed a clacking noise that could of been bottom end, could of been lifters or could of been a broken timing chain tensioner......anyways I decided to purchase a used pruis engine from a totaled 2006 Prius with 102k miles for $200.
I installed the engine, removing it from the top rather then dropping it from below.
2005 has 130,000 trouble free miles. Recently during a long trip the engine started to make more noise than usual. This occurs during acceleration up until the point when you hear the engine really start to work.
I took the car to Toyota and they said it sounded normal. I am picky about my car and know a new noise. My wife even said she can hear it.
I think it sounds a bit like the old lifter rattle my 289 Ford made in my 67 Mustang.
I have a 2007 Prius with 136,500 miles on it. Love this car. Getting 53.3mpg currently. A while ago I started noticing a strange sound coming from the passenger side of the car where the engine is. Recently the sound has become more pronounced and it has me stumped. The noise occurs upon acceleration, but not all of the time. If the battery is at 2 purple bars and I accelerate, the noise is very noticeable. But once I get to cruise speed it goes away. Again, this is sometimes and not all the time. Hopefully it's nothing, but I figured I would post this incase something is on the verge of failing so I may catch it in time.
View 7 RepliesWe were driving on mt highway and ran over rock. Had the undercarriage checked immediately and mechanic spotted the mark inches from transmission but said all was fine. Last evening the engine began to run very rough and loud particularly when not accelerating; true even when idling/parked. Also noticing a small rattle that is infrequent and disassociated with any consistent pattern. We are in Taos Ski valley at about 8k elevation. Still have two weeks of vacation driving ahead of us.
View 4 RepliesI have a 2004 Prius that has a ticking noise coming from the engine compartment It speeds up and slows down with the idle of the engine or the pressing of the accelerator. Appears to be coming from the passenger side (US). No diagnostic codes have come up.
View 15 RepliesI've decide to replace the engine in a 2005 Prius. For whatever reason it went bad around 110,000 miles. It was making some noise and then went all at once. I don't know the complete maintenance history of the car, but I know it was pretty regular. I also know the car was driven mainly highway miles and on A LOT of dirt roads. So, the oil may have needed more frequent oil changes.
View 19 Repliesit was warmer the day than it usually was so it dosnt make the noise as bad however there is usually a lot of clatter/knock from the engine when cold. does it at idle and while accelerating. it gets less once the engine warms up but has been doing it for a while. car has 93k miles and synthetic oil is used. there is also a metal rattle sound almost like a heat shield that is loose. idk if that is part of the engine issue or not. but it only happens in winter or when temps fall below 60 degrees. kinda hard to hear on the vid but its there.
View 19 RepliesMy 2005 Prius sounds louder to me than normal. The car has 117,000 miles on it and is in great condition. Anyways I can hear, maybe, on the gas engine what sounds like a bad water pump or tension pulley, not sure though? I checked the water pump area and there is no visible signs of a leak or dried pink coolant. If the water pump is indeed bad what can I expect at the Toyota dealership cost wise?
View 18 RepliesToday we had the oil changed and everything was good, drove to the hardware store and when we came back I put a heavy box of tile in the truck (I set it down hard, it was heavy). We then started it up and backed out and noticed the master warning light along with the vsc light and check engine light. I stopped it and checked the oil and all was fine. Started it back up and lights still on. I drove it across the street back to the oil change place and when we got into the parking lot there was no gas pedal. Pushing it all the way to the floor and it barely made it into a parking place and the battery on the mfd showed 1 bar.
When we restarted after a few minutes and when the engine came on it made a clunking noise. The guy from the oil change place came and cleared the codes. I didn't write them down like an idiot. After the codes were cleared it started fine with no noise and ran around the parking lot fine and has run perfect since (8 miles). I forgot that we put gas in as well in between the oil change and hardware store. The gas cap seemed fine. Is it possible the slamming of the box of tile caused a fuel pump inertia switch to cause all this? Could a loose gas cap cause this? It has been perfect since we bought it new with zero problems till today.
When I'm going up hill or any time I'm at high RPM's, a flicking (not clicking) noise starts. Additional revving of engine. At first, I thought it was the AC blower motor. It's def not that though.
View 3 RepliesThe other night I was going up the mountain and while going it started making a clicking noise..probably from no oil..We had been told from the dealership there was a small leak but nothing to worry about at the moment.We tested it and it wasn't leaking visibly but I guess with it getting cold out the hole got bigger and we didn't notice so all the oil leaked out as we were powering the lil car through the mountains..Needless to say on the cruise down it started shaking i saw some sparks and I think the rod went through my engine block and we broke down. It's completely dead. The car has right around 200,000 miles on it and has always been very well taken care of.I just traded my dad the car about 7 months ago for my 4-runner cause of gas prices..I moved across the country and of course have had NOTHING BUT PROBLEMS since day one.
View 8 RepliesMy '06 Prius just started making this noise. the check engine light is NOT on. I haven't really heard this noise before in my recollection. I just got an oil change 3 days ago and when I got the oil change there was no indication from the dealership that there were any issues. The engine only makes this noise when the combustion engine is engaged. I can't see any wobbling on the belt drives or and loose parts in the engine. The spin appears to be coming from the engine block or around the pullys for the belt. My first thought is that it could be dirty gas because I first heard this sound after filling up. I am 300 miles from home and have to drive home today.
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I do a lot of diagnostic and keys programming but my mechanical knowledge isn't' that good. I had a minor accident last week and a car hit my Prius from the passenger front corner, Areand left a small dent, check the red X in the pic.
I noticed after the accident that the engine noise was much higher, I checked all ECUs with Techstream, I found only one error on the Transmission ECU:
C2318 Low Voltage Error(Power supply Malfunction).
Cleared it and didn't show again even after driving 200 milesIs
there anything behind this area that can cause that noise? or something responsible of reducing the engine noise might be damaged or broken?
04 with 200k miles, car started stuttering like out of gas, when stopped there was a grinding noise from engine. Took to dealer on trailer, when it was taken to the mechanic all problems went away. Changed oil looking for metal chips, none. Did computer upgrade which was the only code on the check engine light.
Drove car for two days on short trips, four or five times 20 to 30 miles. Ran great. At around 40 miles on next day same problem. No lights or codes of any type. Carried to dealer again, they said they were not sure if it is the engine, transmission, or something in between. I was told they would have to take it apart to find out and the least amount it would cost is $5,000.
The grinding occurs when the engine is running only. when revved up it is louder, at idle the noise changes while sitting in park, louder quieter etc. when driving on electric, sounds perfect. (no sound at all)