So lately I've been hearing what sounds like a slight lifter knock that develops at 1500 rpm to 2700 (I have ultragauge) when accelerating or maintain speed, and it only appears when the engine is at operating temp and disappears when rpm is below 1500 rpm and above 2500 rpm my oil is running at 3900 miles using Toyota synt 0W-20 and it looks pretty clean and at high mark of the dip stick.
View 3 RepliesI'm having a trouble when accelerating at low rpm the engine begins to rattle. Tried removing the connector plug on the egr, to my surprise the rattle is gone but the engine light comes on saying that the EGR circuit is incomplete. Took it to the dealer and they diagnosed it to be the EGR valve opening but failing to close, so they instead proposed to fill in gas with a bottle of their injector cleaner. That made no difference, so tried replacing the EGR valve but again makes no difference. What could the culprit be?
View 11 RepliesCurrently have 85k miles. About 20k miles ago I noticed when I have the driver window down I would hear a rattle coming from under the car when accelerating. Doesn't happen every time but does quite often. Usually goes away almost immediately. I'm not having any other issues and with my warranty out I'm not anxious for a drip to the dealer.
View 3 RepliesI bought a used Certified Prius with 49k miles on it. I noticed when accelerating (and the display shows that I am using the ICE but not so much that it shoots up into the "Power" portion on the far right) that the there is a clicking noise coming from the front passenger side of the car.
It sounds very much like this:
I don't hear it when only the electric motor is running, and I don't hear it when I really punch it and the power meter is completely filled up. Its more when the power meter is in the middle of the display and the ICE kicks in and I am slowly accelerating.
My 2010 Prius has been making an odd noise intermittently while accelerating. I haven't been able to reproduce it for the mechanics (of course). The best description I have for the noise is this. It sounds like the click/rattle sound a car makes when it is stalling. Just sped up. This can happen at any time I accelerate (even at highway speeds) but it usually happens just after I start moving from a stop. When it occurs it feels like there is a drop in engine power and I either have to take my foot off the accelerator, or push down harder and power through.
View 10 RepliesSo I have searched about engine rattle/knock and I have found lots of results for cold starts but I haven't found it for the issue that I am having. I have a 2010 and anytime the battery is real low, around 2 bars and the ICE fires up to charge it, any time I give it a little throttle input, I get heavy valve rattling. It doesn't matter if its cold or hot, it does it as long as the battery is low. I never get this noise when battery is charged up, only when low. I have a link to the video below and you can see once I give it some input, it starts to sound like an old diesel tractor. Prius has close to 200K on the odometer and all my maintenance is up to date. Please turn the speakers up but the noise is right at 5 seconds in or so.
View 13 RepliesI've been recently having the engine rattle/knock noise occasionally when I start the car. After my first oil change, I mentioned this to the dealer and demonstrated this to them while they documented the issue. I left my car at the dealership for investigation.
The following day, my dealer said they called Toyota and created a case about this. Toyota responded saying they heard about this and the possible root cause is the Motor Mounts on the Prius. They will be sending parts (date is still unknown) to fix the issue. :rockon:
I specifically asked if there is any damage to the engine and they said absolutely not and there is nothing wrong internally with the car. This also makes kinda sense because if I press the accelerator to the ground when it starts up, the knock doesn't appear. It also works if I put the car into D and drive away.
I've been recently having the engine rattle/knock noise occasionally when I start the car. After my first oil change, I mentioned this to the dealer and demonstrated this to them while they documented the issue. I left my car at the dealership for investigation.
The following day, my dealer said they called Toyota and created a case about this. Toyota responded saying they heard about this and the possible root cause is the Motor Mounts on the Prius. They will be sending parts (date is still unknown) to fix the issue. :rockon:
I specifically asked if there is any damage to the engine and they said absolutely not and there is nothing wrong internally with the car. This also makes kinda sense because if I press the accelerator to the ground when it starts up, the knock doesn't appear. It also works if I put the car into D and drive away..
Both my lowbeam bulbs went out at the same time on my 2011 back around 48k miles. I believe I read there is a TSB on this issue along with a strange engine rattle at startup.
View 5 RepliesI have noticed in certain circumstances that the engine seems to be in a resonance where it is shaking noticeably and getting worse not better. It happens in two situations.
One is after gliding and slowing to make a turn (with the engine off). As I am exiting the turn and hit the gas the car shakes a lot for about a second or two, then smooths out.
I've noticed that when accelerating from a stop and turning onto an adjacent street to the left or right, there seems to be stuttering or shaking coming from the engine. I'm usually in ECO and only 1/3 of the way into the "engine half" zone on the HSI. It's not consistent but has become a bit of an annoyance.
View 19 RepliesMy good ole trusty Prius is still running good, change the oil every month (3000-5000 miles) and still drinks oil and a little over half a quart every 1000 miles.. No big deal. Well over the last 20,000 miles I started to notice this off rattle, noise when accelerating mid throttle mostly when up hill. I thought it may have been the timing chain after changing the water pump, spark plugs and using all sorts of fuel additives, but no change.
After time it's only gotten worse, my works buys my fuel (regular 87) but one day I bought my self a tank of super premium, and hey!!! It sounded great, quiet, powerful.
My question is.. Is this because of a worn timing chain making the knock sensor do this, is this because of carbon in the engine? What should I know? I really need to fix this.
I have a 98 f-150 4.6L 5spd that has a weird rattling noise coming from what sounds like the engine. The noise will only happen when the truck is in gear and under a load. It will not happen if I keep the RPM's low, unless I am going up a hill. When I rev the truck in neutral, the rattling noise isn't there. Also when I'm driving and hear the ratling noise it will go away when i push the clutch in(which im guessing takes the load off) but will come back when i let out on the clutch. Seems to happen most when I'm in gear and trying to accelerate.
View 9 RepliesIt happens mostly after the engine warms up. When I accelerate, I hear a weird cranking noise coming from under the hood (sometimes it doesn't happen). I popped the hood to see if there was anything wrong, but i didn't find anything major (there were 3 loose screws that I tightened because I thought they were causing the vibration but the noise persisted).
I doesn't make the sound when I rev the engine, only when I am was driving. It happens roughly between 1500 and 3000 RPM. I read some of the archives to get a few ideas, but the noises people are describing are not like the one I am hearing from my car. The closest thing I found this: [URL] ....
I made a video. You'll hear the noise the loudest when I first start pressing the gas, from a complete stop: [URL] ...
We've got a 2012 Hyundai Accent GDI. I've been hearing the rattle "ping" when the engine is under load (accelerating hard or uphill). I've read that this is typical for these engines.
I took it to our local Hyundai dealership since it's still under the 60,000 mile warranty. They updated the computer settings and I put in a fuel additive to clean up deposits. They also told me to buy name brand gas from here on out (Exxon, Shell, Mobil) as these engines don't handle cheap gas well.
Now that I've given you enough of a backstory, here are my questions:
- For those that have experienced the rattle "ping", what did you find fixed the problem?
- Any tips or things to look out for when cleaning the throttle body etc?
I posted before on this issue and wanted to include a video I just made yesterday.
Noise occurs @ 0:03, 0:12 & 0:42
So I've noticed this alarming engine rattle when I first start car as if there is no oil? It only lasts a few seconds! Was it diagnosed with Hyundai? Maybe a quirk of the motor, but seems like over time would cause excessive wear on engine?
View 14 RepliesUnder your Prius, you have "guards" made of plastic and held in place by fasteners that unscrew off but press onto the bolt studs coming down from the metal. They basically shield the underside from debris but have holes to let water flow back out.
I had a persistent squeak for the last couple of weeks that was really annoying me. So, I set out to see what I could do about it. I thought I'd have to add an adhesive pad as a "bumper" between two parts, but when I tapped on the guard (reproducing the noise), I could tell there was a lot of pea gravel in there.
It took a while to get the first fastener off. They don't just "unscrew" that easily. The slightest pressure and you wind up pushing them back on. So, I had to work with two tools with one being a screwdriver gently prying it away from the panel so each turn made it come farther off the bolt. Once the first one was done, the rest were easy. Three in total on each side.
I got a cereal bowl full of pea gravel out of each guard. I was shocked that so much road debris was trapped up on there, but this stuff was big enough to not flow out with the water.
Based on Rattle from driver's side door.
View 1 RepliesI purchased my 2014 GX a couple of months ago and already logged in about 2K. The car has been great so far. The only thing that I'm not so used to, is a strange feeling when accelerating or going uphill (even slightly) - I can feel the engine roar(?) through the steering wheel - I can't really describe it well - it's not a vibration per se, but more like you feel the engine working harder than usual through the slight vibration of the steering wheel. This is my first V8 car - I used to have a V6 Acura MDX before, and never felt that. There is a good chance this is normal for a V8 based truck, but I wanted to get others' input.
View 9 RepliesI have a 2015 Hyundai Elantra Limited. Lately, the check Engine light comes on when I accelerate from a full stop and stays on for 3-5 seconds. It has also happened when I accelerate to get on the interstate (that just started today). There is no issue with the car accelerating. Everything else seems to be fine. It's just the Check Engine light that is freaking me out a bit. I've had the car since June so I'm not ready for any major issues. It started two days ago. I took the gas cap off and put it back on last night to see if that was the cause but it's still happening today.
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