Prius (2004-09) :: Strange Engine Noise
Jul 9, 2014
I 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.
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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?
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I first noticed a strange noise coming from the engine compartment a day ago. I had left the car to sit in the sun for a few hours. When I got in the A/C was set to on and the system was on auto. I tested to see if the noise went away when I turned off the A/C and it did. I turned it back on and it returned. I know the A/C operates at different speeds based upon cooling needs and that it can get sort of noisy but I didn't think that it could/should get this loud. The system seems to begin working quickly and it does seem to put out cold air. If the noise is unusual do you think that it indicates another underlying problem in the A/C system?
Just to clarify, the ICE is not running in the video. The cabin fan is set to low and the temperature is set to low. The person in the car presses the A/C button and the cooling fans in the engine compartment come on as well as the A/C unit. The sound gets louder a few seconds in. Here is the link to the recording I made of the sound.
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I have a 2005 Prius with 218,000 miles. Over the past month or two it's started making a horrible noise, which has finally gotten to the point that I can barely stand driving it. I used to keep my radio around 25 or so, but now need to crank it to twice that to hear anything. I can't tell what it is - it sounds vaguely like wheel bearings, but somehow different. The front bearings and a trans drain/fill was done by an independent shop 6,000 miles ago. That shop says the noise is the transmission and definitely not the bearings. My Toyota dealer says the noise is the bearings and definitely not the transmission.
Here are two videos I took this afternoon, which seem to more or less capture it, though it does sound a bit different recorded on a phone than in the cabin:
(this one has a clearer example of the noise)
Background:
I didn't have any complaints with the car until just before the 200,000 mile service was due, when I started hearing front bearing noise (I've had bearings done in about 5 vehicles, so it sounded pretty obvious to me). I brought it to the dealer and was quoted an outrageous amount for front hub assemblies (they told me they couldn't do the bearings, only the whole hub assembly), sway bar end links, alignment, transmission flush, tire rotation and the engine top end service.
I got a much better quote from my local mechanic who I've used for about 3 years, so I had him do the work. This was back in June, at 212,417. He said that they'd never done the flush on a Prius transmission before, but they had the shop manual and were sure of the procedure, and that their Valvoline rep confirmed the correct fluid, and gave them a written warranty in case of any problems. He did note that "a fair amount of metal shavings came out with the old fluid" when they did a drain and fill (not a flush). He also told me that the tires were worn unevenly so I could expect a bit of road noise after the rotation and re-alignment. They an oil change, sway bar end links, front bearings, tire rotation, alignment and reans drain and fill with Valvoline Max ATF, "Toyota Type WS fluid spec." He told me the same thing about the front hubs being complete assemblies, and the part he listed (PBR930641) appears to agree with that.
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Very hard to describe this sound but it is coming from under the hood and lasts for about 10 seconds.
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Have been driving my Prius with no issue all week. I leave the car home and take my wife's vehicle, while she drives it today without incident. I come home and hear the car making some strange beeping noise (NOT the anti-theft alarm, different). I hop into the car and try to start it, and the check engine and ABS lights come on for a second before other lights in the speedometer area kinda half come on. The gear indicator comes on and has boxes blinking on all of the letters.
The MFD never comes on.
It appears to be the 12V battery dying. The car has 150k miles and I have never replaced the battery, so it seems I was way overdue for this.
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My prius 2008 94k miles makes this strange noise from time to time, randomly. What it might be?
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Passat 2002 1.9 TDI 74KW strange engine noise
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I drive a 2005 Camry SE. In the mornings, when I start it up for the first time, my engine almost...growls. That's the only word I can think of. Not even growl. But instead of purring like a kitten, it purrs like a tiger . And it's only when I first back it out and then take off. Once it's good and warmed up, it drives and sounds perfectly. Shifts beautifully.
And this morning, I let it warm up for awhile and it didn't make any noise when I took off.
I talked to my coworker about it and she said she had a similar issue with her 2004 Saturn Vue and it was something about a manifold, but couldn't remember what it was called. And she said her mechanic was able to fix it, but only temporarily and then told her it would cost her big bucks to fix it permanently.
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I have a 07 Camry with i4 engine. It's making noise like the YouTube video link below. I only put around 35,000 miles on it so far.
[URL] ....
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About a two weeks ago, I had a CEL pop up. I brought it in to the stealership to get it scanned. I don't recall what the exact code was, but the description was something to the effect of "Cooling System Performance." I hadn't noticed that the engine temp was any different than it had ever been, so we kinda figured it was just a bad sensor. We popped the hood just to take a look at things, but he didn't really notice that anything was off. I thought the engine sounded a little difference. It wasn't idling rough, but there was a very subtle ticking noise. He didn't think anything of it. So he cleared the code, and sent me on my way.
The code came back a few days later, but disappeared about a week ago. Since then, however, my .:R has been feeling a little different. Like I'm losing torque. The ticking noise has become distinctly louder, although I can only hear it when I pop the hood. Last night, i was listening to it, and there are two separate noises, coming from two different locations. One is coming from the left side of the engine, most likely from one of the belts. The other is the one that worries me the most, as it's quite a bit louder. This ticking noise seems to be coming from the engine itself. The longer I let the car idle, the louder it gets.
One of my friends took a listen, and he suggested that it could be a blown piston ring. This would explain why I'm losing torque, but I haven't noticed any blue smoke coming from my exhaust.
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I have a 1999 BMW 3 series, 112K, 5 speed, immaculate condition, only full synthetic oil used. After a cold start - even today at 55 degrees - I get a strange noise from the engine compartment which gets louder according to RPMs. The BMW dealer replaced the oil separator for the motor ventilator and some of the respective hoses and valves associated with it. They also checked the oil pressure when the motor was hot and cold and advised it's fine; however, the noise is still there. (A different BMW dealer service advisor said, just after hearing it, it was an oil pump issue.)
On an unrelated note, when the motor is warm and I'm in stop and go traffic, the idle speed will sometimes go up and down (500 RPM - 900 RPM), and when it reaches 500 or so RPM, it dies. The car always starts back-up right away. Spark plugs are new and I used OEM BMW spark plugs. My thoughts are the idle air control valve.
Otherwise, the car is great; yesterday I took it on a 250 mile RT highway trip without any problems.
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When I accelerate a strange noise appears to be coming from the passenger dash.
Sounds like some kind of baffle or low rumble sound it only does make the noise under acceleration.
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i drove my wifes 04 with 87k miles. driving at 40+ mph, there appears to be a rubbing noise coming from the front passenger side, i lightly applied the brakes and the noise was still there but slowing down to under 40 it was gone?
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After coming down a mountain pass my engine started making a weird sound and then died. I am told that it was because I was in too low a gear for the speed I was going (I was using the triptronic or whatever it is called to stay in a lower gear coming down the pass). I had clean and ample oil and no warning lights came on and there are 98,000 miles on it. Does this cause make sense? I have been reading in other discussions that many cars have crank shaft sensors, do VW cars have this? VW Golf 2005 TDI .....
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I have this strange noise coming from the engine compartment on the passenger side of my vehicle. Here are the characteristics of the sound:
1) Sounds a bit like a skipping tranny. Fast paced creaking type sound.
2) Only happens when coasting and the car is up to temperature. Meaning when I'm accelerating or braking the sound is not present.
BTW, the vehicle has 28k-29k miles and is 18 months old.
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It doesn't happen all of the time and it's not consistent as to when it occurs. Originally, I thought it happened when it was cold outside, but since it's been pretty cold here lately, I have not heard it. Also, it has occurred when the engine was warm (after driving for 20 min or so).
It sounds like it's coming from the engine block, but I'm not 100% sure. I have a 1996 ford explorer 6 cylinder 4.0L engine with approx 249,000 miles.
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My 2008 Prius with 105k miles recently started having a strange clunking noise when turning at low speed. Dealership diagnosed it as the steering shaft and yoke to replace.
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Yesterday morning, my 2010 had a very strange noise happen at startup. I'll preface this by saying that it was very early in the morning and I wasn't quite 100% awake, so the exact chain of events are a little foggy to me.
It was about 65 degrees when I went to start the vehicle in the morning. I noticed it was pretty humid out and the first humid morning of the year (I live in central PA). When I hit the power button, a very loud noise came from the engine area. It sounded like metal grinding and the motor having difficulty idling. I depressed the brake to attempt to put the vehicle in drive and the yellow "!" indicator light came on with a message on the on board display (i cant remember what it said). I shut the vehicle down and after a few seconds hit the button again..... same thing. This time, the idling and "grinding-like" noise went away and then the car seemed 100% normal. I noticed there was a little bit of blue smoke coming out of the exhaust while it was idling/grinding roughly.
Perhaps not the smartest thing to do, but I left for work and the vehicle has worked 100% fine since the mishap yesterday morning. In total, I have driven about 150 miles since the issue with no problems.
I read a sticky post concerning a service bulletin for engine knocking at start-up but what i heard seemed to be more than knocking and it was well above 40 degrees.
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I have a 2010 Prius which I have had for a couple years. I get this strange noise from time to time that happens while braking. It starts, it will do it for a while, and then go away. When it's doing it, It will also happen after I turn my car off when the engine does it's shutdown phase. Occasionally, when my car is not moving and the engine is off, if I push my brakes it will do it too.
The noise comes from the driver side, by the firewall. the noise is a loud rachety sound, and it does not sound healthy or normal. I took my car to the Toyota dealership 3 different times explaining what was going on, but since it is random in when it happens, they have always told me everything looks normal. (of course I am out of my 1 year warranty too I got when I purchased it used.)
Is this noise something I should be worried about? What it is? Last thing I want to do is burn out some component of my car when I can save it now.
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I have the IV, with navigation. My most recent sound is from the cd player. If you open up the navigation (like your going to load a cd) it's even louder. It sounds like like a computer hard drive searching and writing data, and goes on for about 10 minutes (or longer, my patience doesn't last too long). Maybe the navigation system is uploading a database or something. No CD's vs. loading a cd do not make a difference, and the audio system is off. Weird. Only way to hear it is on a quiet night, in EV mode. Reminds me of when I used to reformat a hard drive on my old computer. I'll continue to listen for it when I pull up to a stoplight.
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