2000 STS Rough Ride/Resistance
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Suspension, Brakes and Tires Discussion, 2000 STS Rough Ride/Resistance in Item Specific Cadillac Discussion; Hello, fellow Caddy fans... I've got a 2000 STS that I love dearly. It is my daily driver, but being ...
  1. #1
    JMKinney75 is offline Cadillac Owners Member
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    2000 STS Rough Ride/Resistance

    Hello, fellow Caddy fans...

    I've got a 2000 STS that I love dearly. It is my daily driver, but being 15 years old, it's getting a bit delicate.

    Lately (past few months) I've noticed a ride issue that seems to directly correspond with the wheel speed. When rolling on a smoothe, level surface, it feels (& sounds) like I'm rolling on knobby, all-terrain tires. Beyond that, the car seems to be battling some rolling resistance. It's hard to quantify, but I can tell that something is impeding my car's ability to coast freely.

    My tires are not a matching set, but they are the correct size, and I've been keeping the air pressure consistent.

    I don't believe it's a transmission issue, because the fluid is clean, not "burnt," and the issue exists even when rolling in neutral.

    It just feels like I'm riding on off-road tires. I'm a little puzzled. Due to budget constraints, I'm doing all I can to diagnose/repair as much as I can on my own.

    Has anybody else out there experienced this issue? Any thoughts?

    Thank you

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  3. #2
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    Does it sound line the tires are growling? Wheel bearings make that sound when they fail. Does the sound change as you turn at speed?

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    JMKinney75 is offline Cadillac Owners Member
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    MoistCabbage, yes, it seems to diminish when turning to the right. Would that indicate a suspect bearing on the left?

  5. #4
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    Actually, it would point to a bearing on the (front) right. When you turn right, the weight transfers to the left, and the right bearing is unloaded.

  6. #5
    JMKinney75 is offline Cadillac Owners Member
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    You're correct. Maybe I'm still getting "left & right" figured out! Heh heh heh...

    I just researched swapping the hub assembly, and it doesn't look too difficult. Have you ever done it? Any tricky spots to consider?

  7. #6
    basscatt's Avatar
    basscatt is online now Cadillac Owners Master
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    Re: 2000 STS Rough Ride/Resistance

    Quote Originally Posted by JMKinney75 View Post
    You're correct. Maybe I'm still getting "left & right" figured out! Heh heh heh...

    I just researched swapping the hub assembly, and it doesn't look too difficult. Have you ever done it? Any tricky spots to consider?
    ===========================
    get the car off the ground -
    hold the wheel/tire at 12:00 and 6:00 positions - (top and bottom_ -
    gently wiggle it - ANY movement at all indicates worn bearings -

    nothing "tricky" about it -
    EXCEPT that they might be rusted in place -

    be sure to only use TIMKEN or ACDELCO hubs -
    or you WILL be replacing them again - soon -

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