Prius (2004-09) :: Sound Is Coming From The Engine Compartment
Sep 22, 2011
First off it's a 2008 Prius with 80K on it.
There is a new sound that has started coming from the front of the car in the engine compartment or even lower. It is a turning turbine like sound that is mostly obvious when driving at 60 mph, but my guess is that it is always there, but not as audible at lower speeds. The air and heater are both off and have no effect on this sound. The only thing that could have had anything to do with it is that a day or two before, the tires were low so I filled them to 40 psi. The other thing is that it clicked over to 80K the last week and the friendly red maintenance required light came on.
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I 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.
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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've had a used 2007 V6 Camry for about six months now.
I recently started noticing a quiet set of rapid clicks/clacks sound coming from engine compartment/firewall area more or less on driver side. I'm not sure if it was there all along or if I just began noticing it.
It occurs after starting the car, putting it in drive and as soon as I let off the brakes and begin rolling. It might only happen going forward. I will have to notice if it does it in reverse.
It happens rapidly and stops and I don't hear it again until I repeat the steps above after the car has sat a while. I don't believe it will do it again, if say, after doing it once I stop, put it into park and then back into drive and go.
I don't believe it's the CV joints. It does it once and stops and is not related to movement of the steering wheel. It almost reminds me of a relay switching something.
I'll also add that I had a 1995 Prizm and 2000 Corolla that did the same thing. Both were manual transmissions. The click they made was much louder though their cabins were not sealed as well as the Camry. The clicks would happen only after the car had sat a while as soon as the car first started rolling and then would stop. Could it be the same thing in all three cars?
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I just got a new clutch and clutch slave cylinder in my 1998 Ford Explorer. Driving it home from the mechanic, I'm hearing a sputtering sound coming from what seems to be the lower part of the engine compartment. It sounds like a VW Bug exhaust. I've never heard this sound before. It's troubling that it has appeared now immediately following a repair. I presume there is a outside possibility that it's not the mechanics doing, but that seems improbable. (The engine was revving high right before the clutch blew out last week, so maybe those brief high revs caused some damage? I can't imagine that being the case.) Or was there something in the clutch repair process that could have resulted in this?
I made a recording of the sound here.......
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It's a lite creaking clunk/shifting sound and only occurs in forward and when braking to a stop.It only makes the noise... when the brakes are initially applied.If the brakes maintain their engagement the noise no longer occurs.So... if the peddle is intermittently pressed when braking to a slow stop the slight shift/clunk noise will occur on each depression of the pedal.
The sound is located inside the engine compartment..guessing related to the brakes /or suspension components.If I were to take a stab at it's location in the bay.I would think it's loudest nearer the driver's side.I don't really hear it when I brake hard/stop abruptly.It's fairly audible within the cabin.I can't say it's a clunk... at least not fully yet but something has to be shifting slightly !? well maybe the front brake calipers/bolts are loose and the caliper is moving slightly... ? Or maybe a loose bolt on the suspension might be culprit.Could even be described similarly that of a dry coil-over seal compressing.but surely these struts/shocks can't have failed at only 30k ?I haven't pulled the front wheels off, yet, to inspect.
Very difficult for me to ascertain what might be moving/shifting while I'm operating the vehicle to make it occur.But I have to believe that fault lay with either the brakes or suspension.I'd also like to avoid the cost of a dealership diagnosis
some facts:
2010 LX
30K (well maintained/2nd Owner)
factory/everything original
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Ok, my question is, when gas pedal is pressed half or more down-ward, a squeal sounding is coming from engine compartment. 2003 ranger v-6 3.0 flex....
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I started noticing some strange sounds coming from the engine compartment after shutting off the car ( a 2007 with 90K miles). It's different from the hum for several seconds that I often hear after switching off the car. This one is a squeaky rough sound like a small motor wearing out. I think it's from the driver side of the engine compartment. Is that where the inverter pump is? This car didn't have any record of needing the inverter pump changed for the recall as far as I could tell.
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Found the answer... it's the brake booster pump...
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I just bought a 2006 F150 SuperCrew with a 5.4L engine and since the weather has turned cold, I've noticed an intermittent high pitched squeal coming from the engine compartment. I've replaced the serpentine belt and the idler pulley plus another belt pulley but none of the above worked.
I've also had two separate mechanics look at the problem and both are at a loss as to what could be causing the noise. The guess is maybe its an air leak coming from either the intake or vacuum lines. But nobody is really sure.
The noise seems to really become noticeable when the temperature gets below 20 degrees and around 2000 rpms, but sometimes it happens at other times. Where this extremely annoying sound might be coming from?
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I have an 04 mountaineer and when i shut it of i get a loud banging noise from it. Its sounds like its coming from the engine compartment. The truck itself runs great and I didn't see any exhaust leaks. It has 70,000 on it.
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After having the rear axle seal replaced 3rd time, my 2004 Toyota makes a sound/noise behind the dash, drivers side, in the engine compartment. Noise is intermittent and only when braking. Hard to describe....electronic sound. Brake pedal feels like ABS system is kicking in. But no ABS light comes on. Mechanics all tell me, "when light comes on, bring it back". Had the brake system flushed today? Still makes the noise.
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I would describe the noise as a whirling/vibration sound that can be heard as soon as the gas engine portion of the car kicks in (even in park) but gets louder and more noticeable as the car is in motion, especially at highway speeds (55 - 65mph). Opening the hood and listening to the engine block, the noise is definitely coming from around the area of the silver-covered portion by the driver's-side, which I believe is the hybrid synergy engine. The noise has gotten to the point where I really get bothered by it driving anywhere, and I have to turn up the radio to try to drown out the noise.
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My 04 hyundai accent about 2-3 months ago acquired a hissing noise which seems to be coming from the middle of the engine compartment. The car only has 100,000 miles on it.
It is a constant hiss that only stops when the gas pedal is pushed initially. I have looked all over the car and can not see any fluids leaking at all. It is pretty loud and can be heard easily outside the car when the car is on.
I hooked up my obd2 reader and found these codes:
P0304-Cylinder 4 misfire (I notice it when the car sits at idle for about a minute)
2x P0121- Throttle Position circuit range/performance problem
2x- Evaporative emission incorrect purge flow.
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Developed 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.
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I had whining from the engine compartment when I am coasting and accelerating, much noiser than in the past. I had been getting a C1310 code along with C1253 , C1241 and C1300, but I changed out the Anti Skid ECU and these went away. However I still get the red triangle of death VSC and ABS lights on after driving on the highway for about 10 minutes at speeds over 65. So I then got P0A2B 250 codes, Drive motor A temperature sensor. After it rested a while and I restarted the car, all but the red triangle would go out. After two more starts the Red triangle went away too. This happened for a few weeks, until one day after a trip, the car just stopped. Would not start at all, no ready light went on. Testing gave me a P0AA6 526 code, Hybrid Battery Voltage System Isolation Fault. Now I know the 526 could be multiple faults but with the whining and the P0A2B, I am thinking the transaxle is the smoking gun.
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A few days ago, while on a road trip from CA to CO, I noticed a loud squeak from the engine compartment every time I pushed the brake pedal, no matter how lightly, no matter what speed. It even happened when the car was off. I have almost 60K miles on my '05.
When I arrived in Denver, I dropped the car off at a Toyota dealer for troubleshooting. They isolated the fault to a bad ABS actuator. They had to overnight the part, and spent a day and a half installing it. Sounds like a major project!
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I need to diagnose an issue I've had with my 2007 Prius with 79,000 miles on it. Several months ago I noticed a distinctive whining/humming noise coming somewhere from the engine compartment of the car while driving. The noise may be present at lower speeds, but the volume of the noise appears to increase proportionately with my acceleration and as such is most noticeable at highway speeds of 50 - 70 miles per hour. As I accelerate faster, the noise level seems to increase. If I take my foot off the gas and coast, decreasing speed, the whining noise gets lower in volume. I believe I first noticed this noise about 6 months ago, but wasn't more proactive about it like I normally would be because at first the noise didn't seem overly loud and my extended warranty unfortunately was up once I hit 77,000 miles. Now 6 months after I first noticed the noise, I believe it's definitely louder than it was when I first heard it, so much so that I can pick it out over the radio being on at a decent volume.
After checking some forums I thought the culprit might be a wheel bearing. I took it into a local Midas shop at they informed me that my passenger-side front wheel bearing was actually breaking apart in pieces. Obviously I had that wheel bearing replaced but I was also hoping this was the source of the whining noise. Unfortunately that wasn't the case as driving it home the noise was still present. They also said the tires were not balanced properly (from my Toyota Dealership no less when I had them install new tires) so I had the tires rebalanced as well. They did take the car for a test drive but probably stop looking for issues with the car as soon as they saw the wheel bearing in that condition. Also that shop does not specialize in Prius' or hybrids so they might not be able to notice the noise that shouldn't be there like I can.
Other than wheel bearings, where this noise could be coming from. Some posts on here possibly pointed to the ICE water pump or transaxle fluid (which as far as I know has never been replaced since I bought the car new).
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For the last two days I've had a very intermittent (tck, tck, tck) sound coming from what sounds like the glove compartment area. It has a rep rate of around three times a second and is very regular. It sounds like a relay to me. It has only lasted less than 20 seconds on each occurrence so don't have time to troubleshoot. I took that area apart and I see two 12volt 25 amp what look like relays just to the right of the glove compartment. I've left that area torn apart so if it happens again I can feel the relays and get it down to one-and or eliminate them as the cause of the noise.
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I have a 2011 RX350 and recently noticed rattling sound coming from inside the glove compartment.
I think it comes from the plastic cover of the aircon filter at the back of the glove compartment. This cover seems bit loose even when installed back properly and the vibration (especially when driving over uneven roads) is causing the rattling sound.
I know it's a minor problem but the rattling sound can get irritating at times. My temporary fix is to push back the heavy owner's manual on that cover to prevent vibration.
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The passenger side of my jeep accumulates water when it rains. (leaking Sunroof) I remove the water as soon as possible, however Lately it has developed problems starting. There is a clicking sound that is coming from under the glove compartment or maybe the fuse box in the same area. Is it possible that the fuse box could be causing the shortage and my next question is can this problem detected/ corrected, by rewiring entire box or damaged wires? I love my Black Beauty, very little problems and only 112, 000 miles.
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