Bump Steer

Discussion in '6.7L PowerStroke Engine & Drivetrain' started by Chewman, Jul 17, 2018.

  1. Chewman

    Chewman SDD Junior Member

    Messages:
    47
    Likes Received:
    1
    Joined:
    Jul 7, 2005
    Location:
    Michigan
    I have a 2018 F250 with almost 5000 miles on it. All of my Fords have had a steering stabilizer and this one doesnt. Bumps will move the wheel more than I am used to. Bumps my Challenger doesnt react to.

    I have looked at putting an aftermarket stabilizer on it but no one makes it without already having a lift on the truck.

    I have the stock 20inch rims and tires on it.

    Is this an issue others are having?

    Thanks
     
  2. DaveBen

    DaveBen SDD Senior Member

    Age:
    69
    Messages:
    9,539
    Likes Received:
    65
    Joined:
    May 31, 2005
    Location:
    Ukiah, California
    The stabilizer is attached to the AXLE and works on the AXLE. I don't see any interference with a lifted truck or a flattened truck. Suspension has nothing to do with the stabilizer, just the steering.
     
    Chewman likes this.
  3. 01yellerCobra

    01yellerCobra Full Access Member

    Messages:
    322
    Likes Received:
    70
    Joined:
    Jul 18, 2015
    Location:
    San Diego
    How much is the steering wheel moving? I'd be concerned that a stock vehicle has that much bump steer.

    Sent from my SAMSUNG-SM-G935A using Tapatalk
     
    Chewman and DaveBen like this.
  4. DaveBen

    DaveBen SDD Senior Member

    Age:
    69
    Messages:
    9,539
    Likes Received:
    65
    Joined:
    May 31, 2005
    Location:
    Ukiah, California
    You are right yellarCobra, it should not have any bump steer to speak of.
     
  5. snicklas

    snicklas Super Moderator Staff Member

    Age:
    44
    Messages:
    397
    Likes Received:
    20
    Joined:
    Aug 10, 2008
    Location:
    Greenfield, Indiana
    When you hit a bump, does it move the steering wheel and move the front wheels enough to change the direction of travel? Or do you just get a jolt in the steering wheel that you’re not used to?

    I’ve noticed on my rear wheel/4 wheel/all wheel drive vehicles, wither there are gearbox or rack and pinion steering, I get a jolt in the wheel on a decent bump, but the direction of travel is not affected. A steering dampner will help this some, but I think it’s somewhat the nature of the beast. I have driven many more non front wheel drive vehicles, than I am just used to the jolt. Just like the “hop” on a solid rear axle vehicle when hitting a bad expansion joint or a speed bump. The rear will give a little hop sensation..... for me it’s strange when I am driving something and it doesn’t hop......
     
    Chewman likes this.
  6. DaveBen

    DaveBen SDD Senior Member

    Age:
    69
    Messages:
    9,539
    Likes Received:
    65
    Joined:
    May 31, 2005
    Location:
    Ukiah, California
    I had a 1946 Jeep CJ-2A that I totally rebuilt from the ground up. I dropped a Buick V6, Turbo 400 Auto tranny, 4 wheel disc brakes and a 6 inch lift. After I did the 6 inch lift I noticed bump steer. After a couple of bumps I got used to it and I never changed to a dropped steering arm. I drove it like this for 6 or 7 years, mainly off road. No big deal.
     
    Last edited: Jul 18, 2018
  7. 01yellerCobra

    01yellerCobra Full Access Member

    Messages:
    322
    Likes Received:
    70
    Joined:
    Jul 18, 2015
    Location:
    San Diego
    I do remember when I first got my truck it would skitter over some bumps. I got used to it pretty quick. But changing the shocks seemed to get rid of that issue.

    Sent from my SAMSUNG-SM-G935A using Tapatalk
     
    Chewman likes this.
  8. Chewman

    Chewman SDD Junior Member

    Messages:
    47
    Likes Received:
    1
    Joined:
    Jul 7, 2005
    Location:
    Michigan
    It will move the wheel and change the direction depending on which wheel hits the bump. The wheel will move 1/8th of a turn or so. Once I correct it everything is straight again. I drive the same roads with my challenger and I dont get any of it at all. Every after marked steering stabilizer is listed as a prerequisite of a minimum of a 2.5 inch lift. I dont want to lift my truck. I've jacked up each wheel and rocked the wheel with a 2x4 while watching the joints. I dont see any slop.
     
    DaveBen likes this.
  9. 01yellerCobra

    01yellerCobra Full Access Member

    Messages:
    322
    Likes Received:
    70
    Joined:
    Jul 18, 2015
    Location:
    San Diego
    In my opinion it sounds like the issue is you're comparing an 8000lb+ truck with solid axles front and rear to a 4200lb car with fully independent suspension. They're not going to act the same. My old route to work had a bump that would knock the rear end of my truck to the right every time if I didn't think about it. That bump never upset my Expedition or my Cobra. Although once I went to Bilstein shocks that bump never bothered the truck again.

    I don't think the steering stabilizer is going to do what you expect. That being said given my general knowledge of them I can't see why you couldn't mount it in place. Even without the lift.
     
    Chewman and 79jasper like this.
  10. Zorro

    Zorro SDD Junior Member

    Messages:
    1
    Likes Received:
    1
    Joined:
    Jul 21, 2018
    Location:
    Concord, nh
    Take some air out of the tires if your driving daily with no load the recommended 65lbs is rediculous - ad stabilizer all good ...
     
    Chewman likes this.

Share This Page