Passenger side vibration

Discussion in 'Mechanical Problems & Technical Chat' started by PainlessCandy, Nov 14, 2017 at 10:49 AM.

  1. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    Hey guys, so I've got a nice conundrum on my hands. My car has been at the dealer since Friday. Prior to that I had been experiencing a strange oscillating vibration coming from the front passenger corner. The vibration would come and go almost at random and could be felt through the entire car including in the steering wheel, in the floorboard, in the brake pedal while braking, and when accelerating it feels like something is fighting the engine - if I didn't know better I would think it was a caliper locking up, but that is not the case. At first I thought it might be a tire not balanced or a wheel bearing going bad. So I waited til I swapped my snow tires on in order to rule that out. Omw home from the tire shop (last Thursday) I felt it again, so that rules out wheels causing it.
    The time if felt worst was Wednesday night when I came home from work. It was about 40°F and I still had my summer tires on, and as i approached my exit on the highway it started vibrating, but it kept getting worse until I came to a stop, and at it's worst it felt like my wheel was going to come off - it very much reminded me of when I was young and put the spare on my parents mini van and failed to tighten the lugs all the way and got a quarter mile down the road and thought the car was going to shake itself apart.

    Since Friday, the technician has gone over my brakes making sure the rotors are true and have no corrosion causing an imbalance, the wheel bearing, tested the wheels and tires to be within spec of being true (one is ever so slightly bent, but it was the passenger rear wheel and still balanced on the machine), and pulled the CV axle and found no evidence of play or wear in it.

    At this point, I am not sure what to do or what to look at next. Any input, hypothetical or personal experience, is welcome.

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  2. ron v
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    ron v Fear The Stache

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    Wasn’t ur car experiencing this before? I could’ve swarm it was u. If not I know someone on the forum was having the same problem.

    Do u remember hitting any potholes or bumps hard on that side?
     
  3. webby
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    motor mounts? suspension component not torqued... even up top on the strut in the engine bay? If it's not constant, I think that would rule out anything like your rotors/wheels/tires etc. If it were there it'd just increase/decrease constantly with speed. If it's intermittent, I'd think road imperfections or something is enough to get it to start the imbalance or whatever.
     
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  4. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I did have some issues with my BBK that have been largely sorted out, but this is different.

    I dont recall hitting anything that would cause this. I was surprised to hear it was bent, though the bend is so slight that the wheel still balances.

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  5. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    When I spoke to the service tech this morning, I brought up the motor mount as a possibility. I have the rear mount upgraded already, and made it known to her that if there is any sign of wear in the remaining stock mounts that I would be happoy to upgrade the rest.

    It's just so bizarre that it did it so violently the one night, and now it won't do it but a little from time to time. It is worth noting that when it happened the worst that night, I put it into neutral coming off the highway before braking and did not feel the vibration change, and then could feel it strongly in the brake pedal, wheel, and seat as I came to a stop. It did not change depending on how hard I pushed the brake, and seemed to fluctuate as I shifted weight from one side of the car to the other and back coming around the curve on the ramp.

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  6. webby
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    ^ that makes me think suspension component/bolt/bushing being bad or slightly loose. I had an issue with a car once and Honda told me they just randomly used the impact/air gun on suspension bolts and found one that was loose. It resolved the issue I had.
     
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  7. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    Could this be indicative of a shock absorber about to fail?

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  8. webby
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    I wouldn’t think it’d be a shock itself unless it was loose in some way. Normally you’d just have bounce/rebounding issues or clunks when a shock is bad. It would also be leaking fluid potentially if the seals were bad.
     
  9. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I only bring it up because last time I was in they noted there was evidence of a little fluid leaking from the rear shocks; They are of an age that they are due to be replaced anyways. And myself and the tech are currently at a loss as to what it could be. He has double checked the suspension components for anything loose since this morning.

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  10. webby
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    I've read more about feeling vibration issues in the steering wheel with the front shocks being bad, but if the rears are leaking, I'm surprised the tech isn't saying you need them replaced? Did he say the motor mounts were fine? How many miles on the car?
     
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  11. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    250
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I'm at 98,300 miles, the current suspension (HFP) went on around 30,000 miles. The tech noted there was the sign of a small leak, but that they still worked fine, basically just warning me that they would need replaced soon. They did not say anything about the fronts leaking. I was planning on getting all new suspension in the spring anyways, so hopefully it lasts til then, though I might end up throwing parts at it to see if it fixes the problem.

    They said everything they could possibly check is fine. Motor mounts, suspension components, tie rods, sway bar end links, CV axle, wheel bearing, brake rotor, you name it. I even asked them to double check the strut tower bolts in case they were loose, as you suggested. Nothing seems to be out of place.

    At this point, I'm trying to figure out what parts I should throw at it first. I am hesitant to upgrade the rest of the motor mounts first since that will only increase normal vibrations being felt in the car.

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