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Thoughts needed after curbing

Discussion in 'Gen 5 Prius Care, Maintenance and Troubleshooting' started by AH83, Jul 3, 2024.

  1. AH83

    AH83 New Member

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    Hey All,

    I am in need of some thoughts and advice.

    Two days ago I was making a left out of a parking lot and curbed the car pretty hard on an island (right front passenger side wheel), idiotic I know. I managed to scrap the front bumper and catch part of the middle of the car as well.

    I had to replace the tire but was told the wheel was fine other than the scrap. The tire is holding air no problem and it was balanced out I was told, although I don't see any wheel weights but do see where the old weights were prior to the tire swap.

    The issue and concern I am having is now I am getting a sound above 25 mph and above, more prominent at highway speeds. The sound is similar to what you'd hear when driving over highway grooves but it's consistent and is what I believe louder when steering is slight angled, exiting or going on overpasses.

    The car alignment appears to be fine. The car without any steering input or assist, drives in a straight line and brakes in a straight line with no issues.

    I put the car on jack stands and looked for play in the wheel hub but there was none. I put my hand on the coil spring and rotated the tire while in N and there was no vibrations whatsoever, perhaps it needs to be loaded.

    Aside from the sound I am also getting some vibrations but not in the steering column or wheel but rather in the area where the dead pedal is floor is. The issue is that the hit was on the passengers side and not drivers side.

    Just wondering if the hit was hard enough to cause some sort of mechanical damage to engine/drive train? The car drives fine other than the sound and that minor vibration I get.

    Thoughts or ideas on what I should do next?

    IMG_2792.jpg IMG_2794.jpg IMG_2795.jpg
     
  2. PhoS

    PhoS Active Member

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    Ouch.

    Looks like a solid hit however I doubt you damaged the suspension or drivetrain. You could have some plastic loose plastic flopping around that is causing the vibration?
     
    GcinFl likes this.
  3. AH83

    AH83 New Member

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    Checked pretty much everything I could think of. Took it to a couple of mechanics. One couldn’t hear it and the other picked up on. The one who heard it looked at tire wear and advised me to get alignment done. I also swapped out the curbed wheel with one from a friends Prius to see if it made a difference and it helped. I think my alignment is off perhaps by the tire wear he pointed out and the hit tweaked it some. He also doubts it’s mechanical. The car runs smooth no jerkiness. I’ll take it to get alignment and consider getting a new wheel or picking up the used set someone has on sale here for the price of the new single wheel.
     
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  4. AH83

    AH83 New Member

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    Have not driven it for an extended period of time, any thoughts to the experts out there. IMG_2812.jpg
     
  5. PhoS

    PhoS Active Member

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    Looks like the Toe was off so you probably tweaked a tie rod but they were able to correct it. Did the sound change after the alignment?
     
  6. AH83

    AH83 New Member

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    Yeah the sound def changed after alignment. I still think my wheel is tweaked though. I threw it on the back end and its less noisy. I'm also thinking the Toyo's are just too noisy as well. Much happier with the car overall though.
     
  7. vvillovv

    vvillovv Senior Member

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    Since you said you got the center hung up some, I'd suggest you get under her and pull the engine cover, like you're doing an oil change. Inspect with a good flashlight, unless you can see where you got hung up without one.
    Simple stuff under there can make the cars sound like they are going to blowup at hwy speeds. Check the plastic push pins and the engine cover. Don't wait for a service appointment to ask about it. There's no guessing what you might hear, if you do.
     
  8. AH83

    AH83 New Member

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    The center I was speaking of is shown in the picture where the reflection of my head is visible. Not the actual center or the car.
     
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  9. Kenny94945

    Kenny94945 Active Member

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    curb shoot.
    yes, rim, tie rods, ball joint, struts, strut tower, axle, a-arms, hubs, bushings, x-member, frame all could have taken damage.

    certainly check the rim for "run out" is prudent.
    seems visually mechanics find no bent suspension.
    alignment you've indicated is ok.
    but, a vibration remains.

    my first two-cent comment relates to the wheel bearing.
    the impact may have damaged (dented) the bearing's race, hence the vibration.

    going deeper I would inspect the axle and its "straightness", splines, and bearings, with perhaps the worse case being damage inside the transmission housing.

    maybe easiest to check would be all the bushings for compression or tears and their attaching bolts for straightness.

    without further disassembly and measurements, the damage may be hard to find by eye or feel.

    crashing sucks :)

    good luck.
     
    #9 Kenny94945, Jul 9, 2024
    Last edited: Jul 9, 2024
  10. vvillovv

    vvillovv Senior Member

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    Initially (at first read and view ) I could only make out the damage showing in pic 1... Pic 2 and 3 are pretty hampered by shadows and or reflections.
    Now after your update I can see the damage ( dent, scratches and slightly stretched plastic to the bumper? ) in Pic 2, but I still can't make out where on the car and what Pic 3 is showing.
    edit: I think I now see what looks like it might be some damage to the ( middle of the lower bumper? ), but if that is what you are trying to show, the damage is not showing up from the angle you shot it from. It could just as easily be the angle of the light reflecting off the car. It happens a lot in car pics and in body repair shops.

    If you've ever seen the lights used in paintless dent repair videos on youtube, you'll see what I mean about the angles of reflected light when it bounces off a cars body and how many different directions damage needs to be looked at to see (highs, lows and crowns) in damaged areas. And that's under controlled conditions with special lighting.

    For example: Clark is one of the best I've seen. I'll get you far along into this video where he shows different angle views of a fender dent, that don't even look like the same dent after changing cameras position and adding a pdr light.
     
    #10 vvillovv, Jul 9, 2024
    Last edited: Jul 10, 2024
  11. Zeromus

    Zeromus Active Member

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    Could it be, if everything else is seemingly okay, that you lost a wheel balancing weight, thus introducing a bit of vibration? This vibration would sound like those grooves because the tire is making the noise, and it could also be rattling something else thats every so slightly lose and making the vibration sound even worse.

    If you didn't have the wheel rebalanced, could be worth trying that. Especially if the wheel had those stick on weights that go on the inside of the rim, they're only held on by an adhesive and can be bumped off. And balancing is finicky.
     
  12. AH83

    AH83 New Member

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    @Kenny94945 the mechanic said a wheel bearing would be audible at low speeds not just high speeds so he's ruling that out.


    @vvillovv Pic #2 is the front bumper passenger side, same side I hit the curb. I beat the bumper up first and then jacked up the wheel.

    Pic #3 is the bottom molding/trim about half way on the rear passenger door, towards the seam between front and rear door. No dents at all on the underside, just scrapped it. Doors open and close fine. I fixed the molding now so there's nothing vibrating there.

    @Zeromus Wheel weights are correct as I had the tire shop balance them all out at time of alignment. I'm not sure what to think at this point.

    There's no vibration on the steering wheel or wheels for that matter, the vibration seems near the dead pedal but there's nothing there, the car took the hit on the opposite side though that's what tripping me out.

    @Zeromus you've got a Prime, do you hear anything running in EV mode on a smooth surface. A noise like the car would be running on a long grooved/patch of road? The vibration is def less but it's still there. I don't normally hear the radio in the car so it kind of bugs me but perhaps its just one of those things I didn't notice before I curbed it and it's always been there. Obviously if I put the radio on, the sound is drowned out.

    Maybe it's been there all along but I'm just now picking up on it or my hearing is super sensitive?? I'm used to road noise and wind, etc. I know the car has its nuances. The car on HV mode with the AC sounds like a cow mooing and maybe this is just another one of those things.
     
    #12 AH83, Jul 10, 2024
    Last edited: Jul 10, 2024
  13. AH83

    AH83 New Member

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    I drove a regular Prius Hybrid, 23' model but cannot replicate the sound because under load the car is loud, engine noise that is.
     
  14. Kenny94945

    Kenny94945 Active Member

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    "There's no vibration on the steering wheel or wheels for that matter, the vibration seems near the dead pedal"

    I don't know what else to do.
    If I understand, there is a vibration not related to suspension.
    Does a passenger feel the vibration?

    I believe you also mentioned you hear "something".
    This may be your best lead; to isolate where the sound is coming from.

    My best guess is related to a damaged bushing.
    A second guess is a spot weld somewhere on the chassis or behind the dash has broken.

    If I may, just maybe since there was damage, you may be "sensing" all the traits of the car as you drive on public roadways; not driving on a smooth race track surface?

    FWIW This may be your next step: "There are numerous tools that automotive engineers use to measure the amount of noise and vibration in a vehicle including microphones, accelerometers, load cells, force gauges, dynamometers and even anechoic chambers for smaller components." May take hours of shop labor rates if you consider this step plus these professional tools are not inexpensive.

    Good luck.
     
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  15. AH83

    AH83 New Member

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    Passenger faintly hears noise and doesn't sense vibration. On newer asphalt I can hear it and feel the vibration on cement roads not so much, very minimal. I'd really have to be keeping an ear out for it. Everything is on the left side though, while the curbing was on the right.
     
  16. Zeromus

    Zeromus Active Member

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    The car is really quiet on smooth roads in EV mode. Nothing more than regular road noise, doesn't sound like I'm driving on grooved roads.
     
  17. AH83

    AH83 New Member

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    Thanks for the reply. I'll do some more crawling around under the car, otherwise I'm going to chalk it up to it's all in my head.
     
    vvillovv likes this.
  18. vvillovv

    vvillovv Senior Member

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    Give yourself a reward for putting in the time and doing an extensive eval.