Do you feel ur Yaris shaking when waiting at red light?

[Yawesh]

just curious if you can feel the floor area where you place your feet(by pedals) - shaking when idling

[YAR1S]

when the AC is on... and when the exhaust hums a bit..... happens rarely, but I notice it.... could be another car next to you? Sometimes I find myself tapping my foot and that much of a movement can shake the whole car, hhaaha.

[ZING]

My yaris does a lot of funny things, there's this very weird sound I keep hearing..creaking sound...learned to ignore it hehe

EDIT: Answer to question; I don't feel it.

[Yawesh]

when the AC is on... and when the exhaust hums a bit..... happens rarely, but I notice it.... could be another car next to you? Sometimes I find myself tapping my foot and that much of a movement can shake the whole car, hhaaha.

nope tested on a empty quiet place, not on a bridge/highway either

it shakes alright

[ddongbap]

when the AC is on... and when the exhaust hums a bit..... happens rarely, but I notice it.... could be another car next to you? Sometimes I find myself tapping my foot and that much of a movement can shake the whole car, hhaaha.

Dude, thats for sure.

[ddongbap]

nope tested on a empty quiet place, not on a bridge/highway either

it shakes alright

Maybe you're running 12030912930 lbs of torque.

[XYaris]

Having a tach installed helped me to immediately understand what the shaking is and that it is not a real issue.

When I idle at a light, in nuetral (5sp) but Im not pressing on the brakes the engine will be idling @ ~1000rpm. When I apply the brakes the rpms drop down to say 700 or so, causing a definite vibration. If I let up on brakes, the revs go slightly higher and the shaking goes away. The power brakes are parasitic to such a point on this engine that you can feel the engine adjust to running them. I could see this being a more continual feeling if you drive a automatic.

Anyway, this is the only vibration I have noticed in the car. Im not sure if thats what your referencing. The phenomenon I described seems totally normal and harmless to me.

[chibipod]

When I idle at a light, in nuetral (5sp) but Im not pressing on the brakes the engine will be idling @ ~1000rpm. When I apply the brakes the rpms drop down to say 700 or so, causing a definite vibration. If I let up on brakes, the revs go slightly higher and the shaking goes away.

That's odd - when mine's warmed up it will idle at 600rpm rock solid (with or w/out brakes applied). Haven't used the A/C much yet, but I'll see if that changes things. 1000rpm seems a bit high.

Doesn't shake, either.

[gid]

yes , the '08 automatic does most of the time , worse on cold starts ( sits all night ) . This is without the A.C. that's used very little . Is a bit concerning . The '08 5 speed L.B. very seldom . Wonder if this is only for the automtics :iono: . Is yours an automatic that idles rough ?

[mackie421]

Having a tach installed helped me to immediately understand what the shaking is and that it is not a real issue.

When I idle at a light, in nuetral (5sp) but Im not pressing on the brakes the engine will be idling @ ~1000rpm. When I apply the brakes the rpms drop down to say 700 or so, causing a definite vibration. If I let up on brakes, the revs go slightly higher and the shaking goes away. The power brakes are parasitic to such a point on this engine that you can feel the engine adjust to running them. I could see this being a more continual feeling if you drive a automatic.

Anyway, this is the only vibration I have noticed in the car. Im not sure if thats what your referencing. The phenomenon I described seems totally normal and harmless to me.


Wow, I'll be installing my tach this weekend barring any weather related setbacks, and I'll definitely look for this once I get it working. I haven't noticed the engine to be revving any higher with the brakes on in neutral. I have noticed the engine rev a little higher for a few seconds randomly, regardless of whether or not the brakes are on.

[Forrest]

Never noticed any unusual shaking on idle..yet.

[XYaris]

to clarify. The engine slows down when the brakes are applied, or when the fan is turned on as well but to a lesser extent. I have an '09 so I would imagine they tend to do it from day one. Its a subtle feeling and for the most part not worth mentioning because it is harmless, but it does cause cause a slight vibration. If this is the shaking the poster was mentioning, I think its a non-issue.

as for the rpms...i defer to your numbers mainly cause I dont feel like going outside and checking (say they drop from 700 down to 550). my point was that parasitic loss is more noticeable on these little engines and the drop in rpm that occurs when a demand exists causes a slight vibration.

[firemachine69]

It's normal. Don't worry.

[smofskra]

i feel my car shaking all the time but thats beacuse the stereo is up too loud

[YAR1S]

i feel my car shaking all the time but thats beacuse the stereo is up too loud

hahahaha .............:laughabove:

[saplaymate]

just curious if you can feel the floor area where you place your feet(by pedals) - shaking when idling

Yes Yarises tend to become frightened around large vehicles, kinda like chiwawas!

[gid]

Yes Yarises tend to become frightened around large vehicles, kinda like chiwawas! the anxiety passes . :wink:

[talnlnky]

I don't feel anything through the floorboards... but then again, I've got 2-3layers of sound mat all over my floorboards plus a layer of foam. Even before that though, didn't feel it.

The engine on our car is tiny, there shouldn't be much kick to it.

[gid]

for those of you whose YARIS shakes . Is it an automatic ( L.B. included ) ? Please reply . Could tell us something about the engine / tranny combo . The '08 Liftback 5 speed manual does not / less shake ( rough idle at stops ) than the '08 automatic sedan . Also , noticed that when put the auto sedan into neutral at redlights , stop signs , or when parked the car shakes less ( better idle ? motor mounts for YARIS with automatics ? :iono: ) . Is this the case for others ? Give it try and let us know the results . THANKS .

[Altitude]

08 LB MT - no shaking here.

[chibipod]

'09 LB MT - no shaking here either.

[Yawesh]

for those of you whose YARIS shakes . Is it an automatic ( L.B. included ) ? Please reply . Could tell us something about the engine / tranny combo . The '08 Liftback 5 speed manual does not / less shake ( rough idle at stops ) than the '08 automatic sedan . Also , noticed that when put the auto sedan into neutral at redlights , stop signs , or when parked the car shakes less ( better idle ? motor mounts for YARIS with automatics ? :iono: ) . Is this the case for others ? Give it try and let us know the results . THANKS .

yup it's an auto, and when i shift it to neutral when idle, it shakes less - but i do hear the engine "tapping" better.

[Snyprwlf47]

Yes Yarises tend to become frightened around large vehicles, kinda like chiwawas!

I dont know what you guys are talking about. My yaris revs uncontrollably when a larger vehicle is near :burnrubber:



07 LB MT

I wouldnt really call it a shake, its more of a anxious quiver, yari were not meant to sit still^-^

[talnlnky]

08 LB MT - no shaking here.

dito

[1NZYaris1]

Mine only shakes when it see's a prospective partner pull up along side, :laugh::laugh:

[yaris-me]

2007, lb, AT, no shake.

[IsLNdbOi]

I noticed this shaking / vibration when stopped and pressing the brake pedal on both my '07 AT 3-door LB and my '09 AT 5-door LB.

[TheSilkySmooth]

If I have on the defroster or Ac, the engine will shake as its trying to set the low idle. I think this is normal for the car; THE ECU is trying to find lowest stable idle speed and it overshoots on the low end periodically. Maybe Toyta Service Centre have a flash reprogramming since a lot of people notice and complain.

[XYaris]

for those of you whose YARIS shakes . Is it an automatic ( L.B. included ) ? Please reply . Could tell us something about the engine / tranny combo . The '08 Liftback 5 speed manual does not / less shake ( rough idle at stops ) than the '08 automatic sedan . Also , noticed that when put the auto sedan into neutral at redlights , stop signs , or when parked the car shakes less ( better idle ? motor mounts for YARIS with automatics ? :iono: ) . Is this the case for others ? Give it try and let us know the results . THANKS .

The power that the brakes need is what causes your rpm change and in turn the 'shaking' The car does it less or not at all in neutral because the brakes arent being used. For the same reason, a manual shakes less or not at all because less brake force is needed or none at all because the car wont drive away if one lifts up on the brakes. At the risk of being repetitive, this slight vibration is ok and represents the car adjusting rpm to a higher load. Having a tachometer to witness these clearly methodical and exact rpm adjustments would likely put your concerns to rest.

[gid]

the brakes are applied at a stop even in neutral , otherwise the car ( and occupant(s) ) could / would roll away into traffic , etc.. This is less evident when taken out of drive and put into neutral when at rest . I feel it's more of a motor mount thing . Not a brake vacuum issue . Any car will idle rough when pumping brakes ( violently / too fast ) at or before a stop . Which I don't do as common practice . Could be wrong about THE SHAKES :tweetz: . :iono: .

[kou]

it idles @600rpm somtimes dropping to 500rpm. the yaris is pretty close to stall speed at idle it was designed that way to get better FE when stopped.you will feel some shaking from the motor.

[TheSilkySmooth]

[QUOTE=XYaris;223129]The power that the brakes need is what causes your rpm change and in turn the 'shaking' The car does it less or not at all in neutral because the brakes arent being used. For the same reason, a manual shakes less or not at all because less brake force is needed or none at all because the car wont drive away if one lifts up on the brakes.=QUOTE]
-
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I have a manual and it shakes a lot. Better now after its broken in though. The brakes dont use any electrical power other than the brake lights. The ECU knows you have applied brakes and is hunting for lowest idle. Having an AC "on" sequence will cause a temporary idle speed drop-and-rise and the ECU will hunt again for lowest stable idle speed. I think the ECU programming could have better anticipated the ac on cycle and performed a concurrent idle 'up' whilst the compressor cycles 'on' which sucks up power in the mechanical accessory drive PLUS some significant electrical for the ac clutch electro-magnet.

[Kal-El]

it idles @600rpm somtimes dropping to 500rpm. the yaris is pretty close to stall speed at idle it was designed that way to get better FE when stopped.you will feel some shaking from the motor.

Yeah, that's exactly what my 5MT does. When I'm idling, it's generally 600 and smooth, but like you said it fluctuates sometimes down to 500 causing some vibration. I do wish it just stayed at 600 because I feel like it causes some kind of engine wear when it vibrates to a close stall.

Does this have any adverse effects on engines over time?

[AlexNet0]

^ +1

[Kal-El]

I'm considering having my idle adjusted to stay at 600-700 rpm (after fully warmed up) to avoid the engine shaking. I'd rather burn slightly more gas than have it vibrate. This is an easy adjustment, right?

[SeaYa]

it idles @600rpm somtimes dropping to 500rpm. the yaris is pretty close to stall speed at idle it was designed that way to get better FE when stopped.you will feel some shaking from the motor.

+1
My tach hovers just above 500rpm and if I pop the hood I can see the engine vibrating pretty good, and just a slight tap on the throttle, to get it up to ~1000rpm and the engine looks completely still (nice balancing +1 Toyota Engineering!). OP, this is propbably the shaking your feeling, and even though it's normal, it drives me nuts cuz I like everything to be smooth. I feel your pain :drinking:

Does anyone know how to tweak the ECU to make it idle a bit higher?

[Yawesh]

+1
My tach hovers just above 500rpm and if I pop the hood I can see the engine vibrating pretty good, and just a slight tap on the throttle, to get it up to ~1000rpm and the engine looks completely still (nice balancing +1 Toyota Engineering!). OP, this is propbably the shaking your feeling, and even though it's normal, it drives me nuts cuz I like everything to be smooth. I feel your pain :drinking:

Does anyone know how to tweak the ECU to make it idle a bit higher?

thanks, just not use to seeeing a new car shaking already lol

[SunBug]

I have a 2010 Yaris (automatic) and my car shakes when my car is idol, in drive, with the brakes applied (at a red light). When driving its fine, and when in neutral or park its fine. But the minute I come to a red light the entire car begins to shaking. Does any one know what could be causing this?

[nobodywise]

I have a 2010 Yaris (automatic) and my car shakes when my car is idol, in drive, with the brakes applied (at a red light). When driving its fine, and when in neutral or park its fine. But the minute I come to a red light the entire car begins to shaking. Does any one know what could be causing this?
It's normal I think, mine does it all the time

[kimona]

I have a 2010 Yaris (automatic) and my car shakes when my car is idol, in drive, with the brakes applied (at a red light). When driving its fine, and when in neutral or park its fine. But the minute I come to a red light the entire car begins to shaking. Does any one know what could be causing this?

2007 AT (87K miles) with no shaking at idle in drive.

[CoryM]

It's normal. My car idles at 550rpm when hot.... that is VERY low for a tiny 4banger to run smoothly so it runs a bit rough (it's actually impressive it runs at all at that rpm).
Cheers.

[KCALB SIRAY]

http://31.media.tumblr.com/tumblr_m0mql0vs4x1qfy2kdo1_500.gif

[ezhacker1]

any chance of a vacuum leak?

[CoryM]

any chance of a vacuum leak?

Actually re-reading it, yes. I missed the " with the brakes applied" part. Sounds like your brake booster may be leaking. See this post for more info:
http://www.yarisworld.com/forums/showthread.php?t=43093

[hondajt]

^^Thanks for linking that, as I never would have figured out how to test that. Thanks.

Anyone know if I can raise the idle a little? I understand the vibration is normal and coming mostly from the low idle at red lights, etc....but I dont like it. I feel like raising the idle RPM's a little would alleviate the problem without causing harm.

[Jcp123]

The NZ is indeed a naturally vibey engine...in my Echo all the way up to today's Yaris. Just the way it is. Kinda un-Toyota-like, but the low idle is probably another attempt to keep fuel economy high. If so, it works.

I often shift to N (mine is an autotragic) or just turn the engine off at lights.

[nookandcrannycar]

http://31.media.tumblr.com/tumblr_m0mql0vs4x1qfy2kdo1_500.gif

:bellyroll:

[SunBug]

Just an update. I changed my spark plugs and filters. Only to suspect my transmission mount. Both the transmission mount and bottom motor mount were bad. Replaces those, and now the whole car just sounds rough. Im going to assume its the motor settling in. .. I love my car, but all this work is going to drive me nuts. I just hit 100k and have a feeling my Zippy is going to need alot more work. He still looks beautiful though.

[Jlively]

I have a 09 AT LB and I get a slight vibration in drive full stop while holding the breaks. I havent messed with it really to see if it goes away if I lightly let the breaks up some so Idk on that note lol. Its not a very bad shake, rather minor. I hear it shaking the front under carriage plastic molding on the under side of the motor where it meets the wheel well... *mine is slight messed up and a lil out of line* but I hear some of the plastic shaking more than I feel it shaking.
Ive had other cars do similar and after a quick spark plug change it stopped so I just assumed I might be due for new plugs. Im just about to hit 89k and I do believe they are the factory iridium's. I dont recall the previous owner ever changing them, and if they had I would be the first they would have called to do it for them lol. The slight vibration doesnt bother me much, just curious as to what was causing it, and like usual this site has answered another question for me. :D

[Jcp123]

It's more vibey than any four-cylinder I have driven, with the possible exception of the Chevy Aveo...a car which, BTW, was a big disappointment in so many ways, the interior looked so inviting in pictures! Of course my Echo is bad, it has 250k of some of the most poorly-maintained miles I have ever seen behind it, but also a series of 2010 Yarises or Yarii or whatever :D back when I worked rental cars. I also found that the Yaris' extra weight sapped all of the power and FE advantages I found in the Echo which made up for its un-Toyotalike lack of refinement.

[Jcp123]

Having a tach installed helped me to immediately understand what the shaking is and that it is not a real issue.

When I idle at a light, in nuetral (5sp) but Im not pressing on the brakes the engine will be idling @ ~1000rpm. When I apply the brakes the rpms drop down to say 700 or so, causing a definite vibration. If I let up on brakes, the revs go slightly higher and the shaking goes away. The power brakes are parasitic to such a point on this engine that you can feel the engine adjust to running them. I could see this being a more continual feeling if you drive a automatic.

Anyway, this is the only vibration I have noticed in the car. Im not sure if thats what your referencing. The phenomenon I described seems totally normal and harmless to me.

It's not the brakes themselves, your engine is pumping that vacuum either way. It's the brake lights. I can feel the same thing running wipers, headlights, rear defrost, etc. that energy has to come from somewhere...

[sang pengembara]

Hello there,
I wana share the experience with Y-07 sedan.
1. Vibration during idling
2. More Vibration when AC is on
3. Vibration are common in all gear position P/N/D/3/2/L
4. Noisy vibration is entering the cabin...

I do solved these problem by replacing the Engine and transmission mount (total are 3 pieces ).. Now My Yaris-07 is nice to drive. no more vibration and noisy cabin ... .. I hope the tips will be useful.

[CueBall]

09 MT LB Mine does sometines..
I dont believe this is 'normal', as some have stated theirs does NOT do it.
My experience is the same as XYaris'. Most noticeable after a freeway run when stopped at the offramp, in neutral, brake lights on. RPM does a little dance.. about 550 then dips to 450 for a sec or two, shakes, then back to 550, then back to 450.. up and down til I change something. Very annoying, feels like it's gonna die.. it would be fine if it would just hold 550 RPM.
I will be looking at the motor and trans mounts for possible wear/breakage.
If it were just an ECM flash, like some say, I would gladly give up the miniscule amout of fuel it would take to keep it running smooth..
I was thinking I might have some carbon buildup in the idle control valve (or whatever controls idle ???) and maybe I do.. Any tips on where/what controls the idle - and how to clean it??? :iono:

[esse10]

I hate to bring up this old thread but was wondering if anybody has come up with a solution to this RPM Idle being too low and fluctuating up and down causing the motor to vibrating as if it's gonna stop? I think that motor vibration at Idle will cause wear & Tear on your engine Mounts.

[mr_robot]

09 MT LB Mine does sometines..
I dont believe this is 'normal', as some have stated theirs does NOT do it.
My experience is the same as XYaris'. Most noticeable after a freeway run when stopped at the offramp, in neutral, brake lights on. RPM does a little dance.. about 550 then dips to 450 for a sec or two, shakes, then back to 550, then back to 450.. up and down til I change something. Very annoying, feels like it's gonna die.. it would be fine if it would just hold 550 RPM.
I will be looking at the motor and trans mounts for possible wear/breakage.
If it were just an ECM flash, like some say, I would gladly give up the miniscule amout of fuel it would take to keep it running smooth..
I was thinking I might have some carbon buildup in the idle control valve (or whatever controls idle ???) and maybe I do.. Any tips on where/what controls the idle - and how to clean it??? :iono:

Did you ever find the idle control valve? Where is it on this car? Bought a gasket for it to replace it when I clean it but seems like it's part of the TB?

[bobthesilent]

I hate to bring up this old thread but was wondering if anybody has come up with a solution to this RPM Idle being too low and fluctuating up and down causing the motor to vibrating as if it's gonna stop? I think that motor vibration at Idle will cause wear & Tear on your engine Mounts.


as long as the RPM stays around 500 to 550, it will not stall. I have found that TURNING OFF the defroster when you dont need it is the best way to fix the problem as it uses the AC condenser and the extra load causes the momentary dip in RPM. Wiper blades will do it too. It seems to be a normal function of the small engine.

[bairjo]

Put it in neutral while you are at the light...vibration should go away.

[rayfloyd170]

I experienced this, the mechanic dismantled the Throttle Body and cleaned it. Put it back and everything went back to normal.. A lot of dirt accumulated in the plates and the sides of the airway of the TB.

Once in a while TB needs to get cleaned, for desert people, it is required often. I used original engine air filters from toyota and i normally blow them every 10kkm during change oil,,, however i replaced them every after 20-30k km just to be sure they are still efficient in filtering dusts...