Prius Plug-in 2012-15 :: High Pitched Revving Sound
Jun 27, 2014
I'm rolling down the freeway in stop and go traffic, so I have been EV stacking. Clicked from EV to HV several times over the course of 5 minutes. Then, I hear this fairly high pitched revving sound - even and constant rev up, not rev/idle/rev. I thought it was the truck next to me, so I turn down the radio and away from the truck but it happened again. I would stomp on the gas for a moment, and it would subside - not completely because it would start doing it again very soon. I'm not accelerating, but it would be like throwing it into neutral and revving. When I come to a complete stop, it would not go to EV - the light isn't on like when it is warming up the ICE.
My exit was coming up soon, so I would alternate pumping the brake and gas to get it to stop. Only when I was at the light that I powered off the car to reboot. Since then, it did not recur. Strange... Perhaps related, but I doubt it - I had bumped into a vehicle around 3-4 mph the day before. I was... drowsy.
View 9 Replies
Advertisement
Last night around 1:00, I was awakened by a noise I think was coming from my car parked below my window. It was plugged in at the time. I heard a loud, high pitched whine, followed by a couple of knocks or thumps, then a sound like R2D2 makes when he turns his head, then a couple more knocks, and another R2D2 noise. I think I may also have seen lights flashing around the the edges of my blackout blinds, but am not sure, since I had just been sound asleep.
View 4 Replies
When I test drive the PIP, I kept hearing a high frequency pitch noise whenever the car was accelerating. It almost sounds like when you lightly touch the trigger on a cordless drill. Sales guy and my wife couldn't hear it, but I do have extremely sensitive hearing.
A quick search didn't reveal anything, so I am wondering if this is a problem, or maybe part of the pedestrian warning system (although it happens at higher speeds as well).
View 19 Replies
I bought a new 2014 Prius plug-in base model two weeks ago. No problems until yesterday.
The engine has started revving really loudly on occasion. It's much louder than the normal ICE noise in hybrid mode - 2 or 3x as loud (much louder than our regular Honda Civic engine).
When the revving happens when I'm in EV mode, the EV mode light on left side of dash stays on (but it's clearly not in EV mode). The EV and Eco symbols above the power bar go blank. The MPG won't go above 25 mpg, no matter if I'm not touching the accelerator. Switching from EV to Hybrid mode and back does nothing.
The only way to get it to stop is to stop the car, turn it off, turn it back on, and then it's fine - EV or Hybrid mode, it sounds normal again. I have not tried to drive more than a mile with the noise to see if it goes away. It occurs when:
-If the fan, heat or defrost is on when I turn the car on - turning them off doesn't stop the revving.
-If I switch the fan, heat or defrost on when stopped at a light - turning off doesn't stop it. (But it doesn't happen if I turn heat or defrost on while moving in EV or Hybrid mode.)
-If I switch from EV to Hybrid mode while stopped at a light.
The weather is cooler now and I'm fine with the ICE starting to warm up the engine, the compartment, etc, but the revving noise doesn't seem normal.
View 11 Replies
I just got my MKVI late January, and it currently has 3k miles on it. 2DR CSG.
Almost everyday in the mornings when I drive my car to work, there is this high pitch ticking/clacking sound coming from the passenger side vent/dash/A Pillar area.
It only happens over dumps on uneven surfaces or when I launch from a stop/red light. Keep in mind I have a manual. Its a rapid ticking/clacking sound that goes with the uneven surface or any sort of vibration on the road.
It usually goes away maybe after 20 mins of driving (I'm thinking it has to do with the temperature warming up). Or if its sunny out, it just magically goes away.
I've brought it to the dealer at least 3 times with no cure, because it takes me at least 20 minutes to get there. The tech would literally have to come to my house in the morning and listen while i start the car up and drive to "duplicate" the sound.
I originally thought it was static coming out of the right speaker due to bad wiring. Had the right speaker replaced already, sound is still there.
View 17 Replies
I bought a CPO 2010 Camry LE (2.5 4 cyl, 6 sp auto) a few months ago. The car had around 34K miles when I got it, and ever since then, it has had a high pitched whining noise when accelerating or revving the engine in park. It is noticeable from around 2500RPM up, and seems to be a little louder when the engine is cold.
I have left it at the dealer twice, and both times they have come back and said it is normal. I can't believe this, because I have owned many cars over the years, most of them being fairly dilapidated, yet most of them haven't had a noise like this. I think I have read a comment online somewhere that an issue like this was found due to a bad power steering pump .
View 5 Replies
Yesterday after a 45 minute drive home (GA and above 90 degree heat), I noticed a moderately high pitched whining noise after shutdown. The noise continued for about 5 minutes. From my understanding, the inverter coolant pump redistributes the coolant after shutdown and I have heard a humming noise previously which I assumed to be this action.
View 10 Replies
Noticed the barely audible (with good ears) high-pitched sound that emanates from the car when you let off the throttle enough to prevent any charge or discharge bar from showing? It goes away if you completely release the throttle or if you press the throttle a tad bit more.
View 19 Replies
I have a 2002 prius with 147612 miles on it and a problem with my braking system. When I turn on the car the ABS and Brake light turn on and there is a high pitch sound that beeps continuously. Sometimes after a while the warning lights and beeping stop only to return a little while later. I can drive the car when the warning lights are on but i have to press harder on the brakes than normal to get the car to stop and the braking system feels looser. However, when the warning lights turn off I can brake as i normally do and the system feels normal. This problem goes on intermittently as I'm driving.
I took the car to the dealership today and paid $143 for a diagnostics and was told that DTC C1251 was retrieved from the diagnostic computer. The technician told me that the ABS Motor is bad and because of that the car thinks I'm skidding so the ABS shuts off. He recommended that I get the ABS Motor ASSY ( Part #47071-47010) replaced.
Also, I read a post to resolve it by flushing the brake fluid. I checked the brake fluid level in the cylinder and it is at the max level and there aren't any leaks. Would that be an option?
View 9 Replies
I was driving today and had just gotten off the highway. I was going at no more than 10MPH when I heard some high pitched sound. At first I couldn't figure out what it was and thought maybe it was some outside noise. It quickly got louder over the span of the next few seconds and then I realized it was the engine. I had the pedal barely down so was definitely in electric mode.
I quickly glanced at my Scan Gauge and actually saw the RPMs go from 1200's up to 3400 in no more than 10 seconds. I have never had the car rev this high, probably just 2400s when I'm on the highway going 70's. By this time I was getting very perplexed and worried, and had my foot completely off the gas pedal. I immediately pulled to the side of the road and parked (hit the P button). The car seemed to go into park mode fine and then over the next few seconds the RPMs went back down to 992, and I made it back to the house no problem.
View 18 Replies
My Prius IV with about 10K miles started to emit a high-pitched electrical humming sound under the hood when it was in Ready mode. It did not have this sound before. I opened the hood and found the sound was coming from somewhere around/under the engine area. I want to know if this is normal on Gen 3 Prius? I have seen post on the same noise in Gen 2 Prius but the posts (thread) stopped without a resolution.
View 19 Replies
It's been three days since I topped off my tank in my Plug-In and I have been running almost entirely in EV Mode. Today, I had gone 153 miles so I topped off my tank again. The pump clicked off at 0.37 gal. I squeezed the pump handle two more times and got the gas up to 0.49 gal. That comes out to 312 MPG. When I entered it into Fuelly, it did not register the MPG. The last time it did when it was 112 MPG. I guess 312 MPG is way out of range of what Fuelly will accept.
View 8 Replies
I was doing some N coasting, mostly because it's a pain to try to keep regen at 0, and I noticed while the engine will start idling in drive at ~64mph (62mph GPS I imagine), the system indicates it'll stay off above that if I stay in N in EV mode. On the plus side, it can make for some higher speed engine-off coasting, but do that could push MG2's speed too high?
View 19 Replies
Found the answer... it's the brake booster pump...
View 3 Replies
Often when I am turning the steering wheel, even a little it now seems, I hear a whooshing/rubbing sound and feel just a little bit of that rubbing. It feels/sounds like it's coming from the housing right behind the wheel itself, maybe where the shaft bearing is. Is this normal?
View 9 Replies
I got in my car today and realized it was making a whining noise, kinda like the whine of a super charger, I don't hear it at idle but when I accelerate or rev it in neutral it gets louder and higher pitched. Friend had this problem in his Mercedes and he said it was a bad belt.
View 3 Replies
On my 2014 pip. (4500 miles)
I notice when I go over expansion joints on the freeway with my window open I can hear a bit of a clank sound. I do not hear it with the windows closed.
Also it must be done at speed > 55mph.
I do have a trailer hitch but it seems quite tight.
Is this normal? Is it an issue I should bring up at the 5k service?
View 8 Replies
How is the turbo in this new design cooled? Sometimes when I restart a hot engine, there is a high pitched whirling sound before I take off. Is this the turbo in action? Are there active shutters in this car? Twin Power Turbo 2011 BMW 535i....
View 6 Replies
I got to work this morning and had about 3.5 miles left with the EV. Tried to go home and nothing works. I could not open the door. I thought it was my remote battery so I Changed the battery and still nothing works. I get the Orange caution light on the dash and a clicking sound from the engine area . No lights come on. Nothing.
View 5 Replies
I am a V8 owner and have about 6,000miles on the car...recently the car has been making really high pitch exhaust sounds (rasp/high pitch/weird) @ WOT...it did not do this before...
View 2 Replies
I am in the process of tracking down a very intermittent "tick" sound coming from the rear driver side door area. How to remove the door panel.
View 2 Replies
