Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

shuddering

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by bking, Jun 4, 2001.

  1. bking

    bking 1/2 ton status

    Joined:
    Jan 4, 2001
    Posts:
    176
    Likes Received:
    0
    Location:
    Alaska /Here from Ireland in Dec 2000
    1985 - K5 Silverado.
    No lift - 31" tires
    When braking the whole truck shudders really badly, also when braking the truck weaves / pulls from side to side. Not the same side every time, depends on the road. The steering was 'sloppy' when I bought it, not dangerously sloppy, but a good deal of play.
    So, is it an allignment problem? or a brake problem? or a wheel balancing problem? any info would be appreciated before I spend money trying to fix it.
    Thanks.
     
  2. MuleMaster

    MuleMaster 1/2 ton status

    Joined:
    Mar 2, 2000
    Posts:
    147
    Likes Received:
    0
    Location:
    Wayne, NJ 0747
    Well, wheel balancing is probably part of the problem. That's not too expensive. I would try it and see what has changed.
    CU
    MuleMaster

    <font color=blue>K5 Blazer...because size DOES matter
    <A target="_blank" HREF=http://projectmule.coloradok5.com>http://projectmule.coloradok5.com</A></font color=blue>
     
  3. ericsoffroad

    ericsoffroad Registered Member

    Joined:
    May 29, 2001
    Posts:
    27
    Likes Received:
    0
    Location:
    wa vancouver
    chech your rotors thay may be worped thay may have been turned below specs or hot spots from grese fingers just a few things that i have found
     
  4. newyorkin

    newyorkin 1 ton status

    Joined:
    May 8, 2001
    Posts:
    16,555
    Likes Received:
    157
    Location:
    Los Estados Unitos
    Couple things it could be;

    If you just did the pads and opted not to cut the rotors even though they may have needed it, that is your problem. I just did this a couple weeks ago cause I was in a hurry, and ended up chucking the brand new-now grooved and chewed pads, then cutting the rotors. Stopped on a dime after that.
    Also, do a poor man's balljoint check. Jack her up and get the front wheels off the ground, then grab the whole wheel, one hand at the top and one on the bottom, and try rocking it top to bottom to check for play (you could also just grab the bottom of the tire and try to pull it toward you, out from the vehicle, and see if it pivots or moves any way).
    Also, make sure all your steering stuff is tight. leave one front wheel on the ground, jack up the other, and try to mimic the steering action by turning the tire. Or have someone turn the steering wheel back and forth with the truck on the ground and engine off. Watch each component and see what moves. I had super-loose steering when I bought my truck, and eventually narrowed it down to a loose balljoint in the pitman arm.

    I'd bet anything that the problem is grooved rotor, though. Yank your wheels and check em out.
    Good luck!


    Ratch
    **<A target="_blank" HREF=http://k5.8m.com>http://k5.8m.com</A> What more is there to life?**
     
  5. 90K5

    90K5 1/2 ton status

    Joined:
    Jun 1, 2000
    Posts:
    3,719
    Likes Received:
    0
    Location:
    Lubbock, TX
    Sounds like a warped rotor

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  6. bigblue

    bigblue 1/2 ton status

    Joined:
    Dec 6, 2000
    Posts:
    658
    Likes Received:
    0
    Location:
    southern california
    Well my truck does similar actions and I know for a fact my Ball Joints are Shot all to hell....Just waiting for the D60. I don't want to spend any more on this front end...
     
  7. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    Well high on the list of possiblity's here is warped brake rotors. It would account for the majority of the issue. Be sure to flush the brake lines when you go through the front brakes. Fluid is supose to be changed about every 2 years of so for best performance. It is seldome done by do it yourselfers that have never suffered a failure. Pro shops should be doing it but it is possible they will cut corners. Unfortunaly if it has not been kept up this may help cause the master cylinder to fail. This is a chance you have to take. Keep a close eye for leaks on the master and payy attention to the peddle travel. If the travel seems excessive one of the internal sealls may have failed and it is loosing presure. The peddled will slowly drop in this instance while holding it at lights. Vary rare to have a dangerious failure as long as you monitor for leaks. Goods news is Rebuilt masters are only $35-40 at most chain stores like AutoZone.
    Other things to check is bad ball joint, tierod ends, tire problems, wheel bearing problems and alignment problems. The "Other things" list is where you need to check for the "Slop feel" and a few other things to check would be cracked frame at steering box and worn steering box.
    These trucks rarely go out of alingment. What cause an alingment problems is worn parts and bent tierods. Once all the bad parts are replaced get an allingment and as long as a part doesn't fail you probably won't need another for a long while.
    The age of your truck the front end is probably due for a rebuild. Things like lubing the tierod and ball joints are questionable since you recently purchaced it. Time to break out the tools and pull it all appart and inspect.
    List of parts your porbably going to need and rough price.
    Tie rod ends $25-35 (3-4), If you have one of the tierod that the main length of the bar is part of the rod $80-$100
    Ball joints $25-30 each (4 needed).
    Seals For complete front axle includding inner axle seals $100-120
    Calipers Lifetime warranty from Pep Boys $12
    Rotors $35 for cheap china ones if yours can't be turned, $60 up for good ones.
    Pads $35
    Addition parts to concider inspecting and replacing, since you got it appart, are axle u-joints, inner axle seals. Good chance these may fail if the axle shaft is moved beyound it's normal movment assembled or if they are removed to replace the u-joints.
    Also take some time and inspect all the bushings on the springs and sway. Check EVERY rivit in the frame. Grab them with plyers and twist, if they turn they are bad and need to be drilled out and replaced with high quality bolts.
    Need to get sombody to move the steering wheel back and forth whille you look at the rivits and check for movement beetween the frame rails and crossmembers. Fairly common for some rivits to be bad on a High mile truck or a truck that has seen trail service or been in even a minor accident. Also watch the tierods. bad ends are usualy pretty easy to spot when the steering is being moved. Ball joints are harder to spot and sometimes it's just best to take the knuckes off and check for slop by hand.
    Now with somebody moving the steering wheel full lock to lock you will see a lot of frame movement where the steering box is bolted. That's normal. look carefully for cracks and the box acctully pulling off the frame. If it is cracked you will have to weld in a patch. If it isn't cracked to prevent it you may want to get a steering brace. Good investment and it will make the steering feel much better. It will help prevent the frame from cracking if it isn't allready.
    http://grimsk5s.coloradok5.com/
     
  8. newyorkin

    newyorkin 1 ton status

    Joined:
    May 8, 2001
    Posts:
    16,555
    Likes Received:
    157
    Location:
    Los Estados Unitos
    Thanks Grim! I was starting to feel like my posts were too long!! (meant in a positive humorous way)!

    Ratch
    **<A target="_blank" HREF=http://k5.8m.com>http://k5.8m.com</A> What more is there to life?**
     

Share This Page