W900 rough ride

Discussion in 'Kenworth Forum' started by jriol, Aug 26, 2019.

  1. jriol

    jriol Bobtail Member

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    Aug 26, 2019
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    Have a 2005 Kenworth W900L with the AG380 (flex) suspension. 260 wheelbase running 11r22.5 up front and 295 75R 22.5 in rear. All new shocks all the way around including sleeper. Brand new king pins, and tie rods. All new bags on suspension. Brand new leveling valves on sleeper and rear. 8.5 in between rear rear and frame.

    Always had a really rough ride since I got it about a year and a half ago. Been trying to change things little by little but nothing has really made any difference. Its rough all the way around.. up front and rear. Next thing I'm changing is cab mounts as they are pretty bad.

    Anyone have any clue what could be going on? Any help is really appreciated
     
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  3. Muddydog79

    Muddydog79 Heavy Load Member

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    What brand shocks u put on? I used the cheap ones from truckpro this last time and it rode good for bout 2 months then slowly back to crap. Gonna try a more pricey brand shortly to see if it will improve. Only other thing i may think mine might be is the spring bushings are about shot. Just havent had the time to tackle all 12 of those yet. I have the same setup as you just fyi.
     
  4. Muddydog79

    Muddydog79 Heavy Load Member

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    Correction, i have same suspension, but low pros all the way around. Two years ive had new kingpins, shocks twice, new airbags, leveling valves. Shocks made the only difference i could tell.
     
  5. Collie

    Collie Guest

    Tie rods, king pins and shocks arent going to change the rough ride. neither are airbags. Was that way when you bought it. Its the nature of the truck and setup that you bought. Nothing else that you throw at it is going to be a magical solution. There is no special expensive shock absorber that will make difference between night and day. What was the last truck and suspension you had if you dont mind me asking. And excuse the straight foreward nature of me. its just how i am
     
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  6. jriol

    jriol Bobtail Member

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    My bushings seem to be good. I believe the shocks were paccars. Bought at KW.
     
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  7. jriol

    jriol Bobtail Member

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    Before this I had a 93 with the 8 bag. Can't really tell you for sure but I think it might've ride better than this one. And it didn't even have air on the cab. I'd like to believe that there's something i can do to make it ride a bit better
     
  8. Collie

    Collie Guest

    if thats the case, you can make slight improvements. But other than that. you wont be able to duplicate the cadillac feeling of your last ride. Whatever improvements you make, they wont be dramatic on a holy s...t factor brother. Just gonna have to live with it
     
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  9. jriol

    jriol Bobtail Member

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    Next set of tires I'll be putting tall rubber. gonna be a while til then though. This rough ride is slowly killing me though. Really been down on this truck because of this
     
  10. Collie

    Collie Guest

    just remeber, what seems rough to you, is pure heaven to others. Test drive a mack and you will know what i mean
     
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  11. jriol

    jriol Bobtail Member

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    Yeah I'm gonna try a couple more things and have someone more knowledgeable take a look. If I can't get it any better I'll be trying to sell it. It's a shame really. I did the engine on it and it couldn't have come out any better. Just really annoying to ride around in a W9 with this ride quality
     
  12. Collie

    Collie Guest

    i dont mind a rough ride. but im a local owner operator with a 20 year old pete. I kinda enjoy the old school feel. even with bags on my truck. But yeah, if you over the road hauling, i could see that being a problem
     
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