Passat (B5) :: Engine Pinging Intermittently When Accelerating At Fairly Low RPM
I have a 99 1.8T Passat (with automatic) and I hear it pinging slightly here and there when it is warm outside. I use name-brand premium gas every time. The spark plugs are fairly new and the temperature gauge consistently shows that it runs at 190 degrees F. I have 103,000 miles and it runs fine otherwise. It doesn't ping all the time, but does so intermittently when accelerating at fairly low RPM. I change the oil every 4,000 miles religiously and just switched to synthetic oil. The "check engine" light is not on and it easily passed the California smog check just a month ago. What it might be? Could it just be a little carbon buildup due to age?
View 8 RepliesPrius (2004-09) :: HV Battery Going Up And Down Fairly Rapidly
Last 2 weeks my 2006 HV battery seems to be showing the SOC very erratically. Going up and down fairly rapidly, sometimes staying at 4 bars for a good 20 minute drive on the highway. This weekend after driving 7 hours in 110 degree heat, the battery fan came on. It was blowing on high for about 15 minutes and then it quieted down.
I believe these are signs of it's potential upcoming failure. The car has only 127k miles so I'm still in warranty. So fingers crossed that I'll be close to home when I see all the warning lights pop up.
Prius (2004-09) :: Vibration / Noise From Front When Driving On Fairly Smooth Roads
So i am trying to diagnose my vibration/noise that i am getting from the front right side of my 08 prius (176k miles). It kind of like a rattle vibration when driving on fairly smooth roads. I jacked up the right side to take a look around to see if anything is out of the ordinary. I did the push pull around the tired to see if there was any motion (there was none). Although there is some play when you manual rotate the wheel, about and inch of circumferential motion. Is this normal ?
View 6 RepliesPrius (Gen 2) :: Engine Stutter At 20 MPH On Acceleration
2005 Prius, 135,000. At 20 MPH on acceleration engine stutters, solution?
View 3 RepliesPrius (2010-12) :: Engine Rattle At Low Rpm Acceleration
I'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 RepliesPrius (2010-12) :: Engine Choked Off - Sluggish Acceleration
Lately I have found that when I am trying to go up an incline on my road, that my car has trouble accelerating. Almost as if the engine is being choked off like it is about to stall or is out of gas. I have to press the accelerator almost to the floor to get up the incline. The suddenly it will lurch and accelerate rapidly as if I have put the car in Power Mode.
I should also add that this only happens when the engine is cold. I didn't have this problem last year at all. I usually wait a couple of minutes after the engine starts before I try to drive, but that doesn't seem to work.
Prius (2010-12) :: Unusual Acceleration When Engine Is Warming Up
Basically, when driving shortly after turning on the car (when the engine is still warming up) I often experience a 'shot' of acceleration despite not further depressing the accelerator. In other words, I'll be driving along smoothly and suddenly the car will speed up slightly by itself without me having done anything. This only occurs when the HSI is past the middle (i.e. when the engine is powering the car) and when the car has recently been switched on. It's almost as if the sensor that detects my acceleration is re-calibrating itself while I'm driving, increasing the input to the engine.
The first time it happened it was a bit of a shock and I was a little scared, however I'm used to it by now and can anticipate it happening (however it doesn't happen 100% of the time). It's nothing too serious - it probably only accelerates a couple of KMs above what I'm actually doing but still is a bit of a worry. I'll be taking it in for a service shortly and seeing what they say about.
Prius (2004-09) :: Engine Turning On At Low Speed / Acceleration
I have noticed that recently my engine seems to be coming on when I accelerate from a stand still even with very slow acceleration.
For example today: battery over 50%, foot off break and onto gas very gentally, 0 to 10 in about 4 seconds at about 8 mph I feel the engine kick in.
Over the last few days it has seemed like the engine has been running a lot in town or when moving slowly in heavy traffic.
If I press the ev button I can accelerate quiete aggressively before the engine will start.
Prius (2001-03) :: No Power Steering / Acceleration - Engine Seemed To Die
2 wks ago, my 2001 Prius with 113,500 miles suddenly failed...no power steering, no acceleration, engine seemed to die. I coasted into a parking lot. Dash warning lights were dire...triangle of death, red car w/ !, main battery, power steering. After powering the car off and on 3 times, everything reset and it drove fine. Took it to dealer next day...ICE not getting fuel and 12v reading low. Cleaned throttle, replaced 12V...things ran perfectly over Christmas weekend...over 400 miles driving all types of roads/conditions other than snow. Dealer had said there was a power steering recall...so I took the car the next week for that work.
Car failed within 7 miles...same warning lights but an entirely different feel to the failure...felt like the transmission was bumped into neutral...no acceleration...but retained PS and was able to steer car easily to a pull-off spot as engine(s) didn't die. Restarted w/ no problem...we limped home, having to stop and restart car 2x in 20 miles as the feeling of transmission in neutral returned. Returned car to dealer next day...they say hybrid battery has failed. I can drive the car short distances but every few miles, I must stop and start it...almost like re-booting a computer...so I'm driving it very little. I do not have the codes from the 2nd failure...I was too shaken up to ask...but will get them ASAP.
Prius (2004-09) :: Engine Misfire On High Acceleration?
Motor started to misfire while out on grocery run. scanner said mifire on #1 so I bought a coil and plug. car ran well for a day then same thing on # 2.. repeat.. then # 3 repeat so did #4.
Now it did it again on #3. I switched the coil #2 and #3 to see if scanner would show if it followed the new #3 coil but so far no code. The misfire is on light acceleration, push down hard and it does not miss. Today I will try some fuel injector cleaner.. Is this the trail I should be following ?
Prius (Gen 2) :: Engine Suddenly Start To Race With No Effect On Acceleration
I'm having a bit of a problem with my 09 Prius. I've got 120K miles on it, and I have multiple codes on the hybrid battery. I don't know exactly which codes they are, I will see if they are on the paperwork that I have and post them if I can find them. Either way, the battery will be replaced.
But it's the problems I'm having in the meantime that have me concerned. While I am driving, and seemingly under any condition, my engine will suddenly start to race with no effect on acceleration. In fact, when it has happened on the interstate, the car will decelerate. When I pull the car off the side of the road and power cycle the car, it temporarily clears up the problem. The frequency of this occurrence is increasing. The first time I experienced the problem, last week, it happened twice during a 3 hour drive. 2 days ago it occurred 12 times during another 3 hour drive.
Prius (2004-09) :: 2007 - Engine Noise Occur Upon Acceleration
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 RepliesPrius C :: Acceleration From Stop With Electric Engine / Clicking Noise
My Prius C II is at a little over 6,000 miles. I've noticed when I'm accelerating from a stop using the electric engine, that at around 11-15mph I hear a clicking noise coming from the left hand (driver) side of the vehicle.
To hear the sound my windows have to be down and my stereo not playing.
Is this clicking sound while accelerating normal? I know there's a clicking sound that happens when I start my car and when my car sits after parking for a second but this clicking noise sounds like its coming from the front left hand side... not inside the cabin.
Prius (2004-09) :: 2008 - Red Triangle / Check Engine And VSC Lights On - Low Acceleration
Some days ago while I was driving, the check engine, red triangle and vsc lights came on and immediately my car slowed down. It would take longer to accelerate and every once in a while upon getting to a stop sign, it would take long to get to 5 from 0. could this be my hybrid battery going out? My regular scanner can't pull up any codes on a prius.
View 11 RepliesPrius (2004-09) :: 2006 - Rattling Noise Coming From The Engine Under Acceleration Only
i have been hearing a rattling noise coming from the engine under acceleration only. It isn't a super consistent rattle, seems to only happen when accelerating from lower speeds. And sometimes you don't hear and other times you do. It's not a bad rattle or knock it's more of a ticking/light rattling sound that is definitely abnormal.
I know my brake accumulator is barking at me and the 3 way coolant valve is going bad as sometimes I get a constant pumping sound. I don't think these have anything to do with it but thought I'd mention it.
Prius (2010-12) :: Slightly Shaking Engine - Rattling Noise On Acceleration?
Slightly shaking engine and rattling noise on acceleration,it happens when the car is hot and especially when the battery level is very low ,I guess is when as more load . If I accelerate and keep it steady at 20mph I can feel a constant vibration but goes away once accelerating more....like if you're driving on a rippled surface ....that is only when engine is on , doesn't happen on electric only.
The noise it sound like a tapping coming from the engine when slowly accelerating from 0 that goes away as soon I give more gas ,is annoying wile in the traffic.? Can the sparks plugs be the problem?they been changed 120k ago.....,I cleaned the egv pipe but problem still there. Like I said is only when the engine is up to running temperature.
Prius (Gen 3) :: 2010 - Engine Check Light On / Loss Of Power And Decrease In Acceleration
I was driving my 2010 Prius on the Highway (less than 2 miles) and the engine check light came on.... shortly after the ! (triangle with exclamation light came on and then started flashing). I exited the highway and was going back home. On the way home, I noticed a decrease in acceleration and then a message 'Hybrid...'
I was able to coast into an apartment complex and then got a ride home.
After about a couple of hours, I went back to the Apartment Complex. I reviewed the manual and one of the options was to check the gas cap. I filled the tank up last weekend and haven't driven it since today.
Prius (2004-09) :: 2007 - Whining Noise From Engine Compartment (Proportional To Acceleration)
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).
Prius PHEV Plug-In :: Chirps On Occasions / Engine Drops Out Under Light Acceleration
For those of you with more experience with the Hymotion pack than I:
1) What does it mean when the car "chirps?" It seems like I get 3 or 4 chirps on occasion, with each chirp itself being a rapid succession of 3 individual chirps? I assume it is something to do with the Hymotion pack because I never heard them before the pack was installed.
2) Under light acceleration, say 1 mph/sec, when the engine is just barely contributing to acceleration, at around 31mph (+/-) the engine stops putting out power (the arrows from the engine disappear), the car noticeably hesitates when the engine drops out, I get 3 or 4 chirps, then the engine comes back "online" about a second or two later and all is well. Under normal (i.e. faster) rates of acceleration, this does not happen.