Truck Shaking Real Bad
 

so i got the overdrive solenoid fixed put new tires on it and new transmission mounts and i still have this vehicle shake from 40mph up. its really bad between 40-55mph then tapers off but you can still feel it....thought it was tires being in bad shape so i replaced them, still the same problem, thought it may be in the powertrain so i found the tranny mounts squshed and mushy rubber, replaced and still have same shake. dont know which route to go, read about driveshafts being out of balance but how likely is that? shocks shot and so im getting leaf spring bounce? leaf spring bushings? motor mounts? bent axle? balljoints? bearings? dont know if any body else has had a problem like this or not i just dont want to throw parts at it and sink a lot of money in it. read some other threads similar but not really describe what going on with mine. it is 4 wheel drive

Block up all 4 corners and have somebody run it up while you crawl around underneath looking and listening.

in the front? how did you install the rims?

you have to use 2 tapered lugnuts to center the rim then install the remaining lugnuts, then pull off the tapered ones.

I'll have to take a lood at therim situation, the tire shop might not of done all that, but the rims are aftermarket 17" pacers

That just night be the issue, check what kind of lug nuts they used, if they are conical that's not the issue.

ok, so i checked it out and the wheels fit snug with the lug pattern so that is correct, all lugs are conical. Took all wheels off, and retorqued using proper torque sequence. Still shaking haha. guess i will start with the cheapest parts and work my way foreward, like leaf spring bushings. Tell me what you guys think about this....if the shocks are wore slap out in the rear, would that cause is to shake? its almost like a side to side shake and you can feel it coming on and it starts to get harder and harder almost like everytime it bobs back it springs it to the other side and each time it slings harder and harder....am I thinking right or am i completely wrong. Havent pulled the shocks off yet to see.

check your kingpin bushings or balljoints

You have a case of Death Wobble coming on.

Is it 2WD or 4WD?

king pin bushings? what exactly and where are those located? i'll check the balljoints. it is a 4wd. this is what i was afraid of...the dreaded death wobble i have read about haha

My shocks are completely worn out on mine and i don't have that issue, if the wobble is in the back maybe a universal joint? If its in the front, death wobble new steering stabilizer should fix it and shocks

new stearing stabalizer is juat a bandaid to the issue put it up and stads and do some fanesing with the front end see were you get movement that shouldnt be

its real hard to tell where it is coming from, i dont really feel it in the steering wheel per say it just feel like its in the entire truck

does it make it worse when you hit a bump or turn?

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lift the font off the groud enough to get a crowbar under the tire lift up see if there is any movemet if so ball joints. grab the tire with both hards try and move it back and forth anyway you can if you got alot of movemet wheel bearings. if you turn the wheen with the tires on the ground and you see the frontend move before the tires do leaf spring bushings. this was real common on 2nd gens but 1st gen do get it some times

did you check the u-joints? just wondering cuz that would shake bad then taper off at higher speeds.

Bent rim, bad balancing of tires, defective tire, broken belt, are all possibilites also what brand and size of tires are they ? Do you have someone elses tires and rims you could borrow to eliminate a tire/rim problem? :c:

does not make it worse when hitting a bmp or turning ive tried going into turns hard to see if it will go away and it doesn't. tires are brand new, faactory width and height except fitted on a 17" tire/rim setup. I would check the u-joints except i honestly have no idea what im looking for. I know where and what it looks like just unsure of what in particular to look for. I'm probably about to take it to a specialist here in augusta who is fairly well known and respected for everything 4x4 related. Not the cheapest by no means but if theres a problem he can figure it out.

Did you get it figured out? My 2wd drive is shaking above 90 km/h.

i have the exact same problem on my d350. i have tried a number of things myself. i also have worn out shocks. i plan on replacing soon. definately would like to know what you find out. thanks:pca1:

I'm not 100% sure but i have an idea. I stuck half my body out of the window the other day when i felt it start shaking and noticed the front wheel had some hop in it then looked at the rear wheel and it looked smooth. had my wife drive as i looked out the passenger side...same thing. Took it to a specialist shop and they jacked it up and spun the tires up with the tire skimmer...once again rear wheels look good while the front wheels are hopping. They SAID it was because they were not centered, however i find this hard to believe when the lugs are conecentric and care was taken when mounting these rims. The process was done for all 4 wheels and again repeated after i saw the hop going down the road with no effect. i'm going to swap front rims to back to eliminate a possible bent rim(highly doubt) then going to have balance rechecked. I will say this, when the tire was spun up with the skimmer, the hub did not move. i could of put a dial indicator on the hub and it would have only moved a couple of thousanths so as much as i may deny it it is probably something in the rim/wheel. i will post more as soon as i get around to elimination. shift work has me tied up right now.

Springs are prolly not the cause...spring bushings, maybe. Is the truck lifted? Does it run smooth if you try and accelerate through it or shake really bad if you hit a bump just right? Dana 60 or 44? 60 has king pins (fairly easy rebuild) 44 has ball joints (IMO harder to replace). I have to put a track br (panhard bar...think 79 ford f150) and build cross over steering for mine soon......I really think the biggest cause of the poor steering in these 4wd trucks is the lousy Chevy type drag link that goes from the steering box back to the steering knuckle. It looses leverage ant the TREs don't like to be run at extreme angle, even with the drop pitman arm.

truck is stock height. runs smooth, doesn't make it any worse or better if i hit a bump. has dana 44 i assume being as there are upper and lower ball joints. I have recentered the wheels to the best of my ability using conecentric lugs and a strict torque sequence as to pull the wheel in evenly and slowly and i will say this has helped a lot, last thing im going to try is moving front wheels to back and see if that helps a little more. when the front wheels were spun up on the tire skimmer(wheels still on truck) the spindle and knuckle and all did not move, just the rim was hopping around. may even go further to go back to the guy who put my tires on and have him double check the balance just in case.

I have to agree with the u-joint theory. Since you don't notice it in the steering wheel, I assume it's in the back of the truck. They are fairly cheap, and if it hasn't had any in awhile, it may not be a bad idea to replace them anyway. But if it's shaking side to side you may have a bigger issue on hand. Do you wheel it? maybe the driveshaft is bent, or lost a balance weight.

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Sorry, thought I read the whole thread, your truck should have a dana 60 in it. The 60's in those early trucks were ball joints as well. Have you changed the wheels on it? The wheels don't center on the lugs on those, the hole in the center of the wheel has to fit the hub perfectly, I wonder if this could be the problem.

montepig72- I am more encouraged to believe it is my wheels...they are not stock, they are aftermarket 17" pacers and you dont have a way to center them....however, i took each one off then tightened each bolt in sequence a little at a time and it helped tremendously with the shake. I also went to the junkyard and found only ONE set of 8 lug wheels on a 89 d100. gotta double check make sure they are the same pattern, they look the same. Prolly end up taking those and sandblasting them then powder them and they will be able to center good. where could i get teh centering ring?

I'm replacing my engine mounts, one of them is wore right out. If i rev to a certain RPM the truck will shake just like at highway speed.

engine mounts and tranny mounts are new

Fixed the problem fellers, if you get aftermarket rims and can't get hub rings on, dont count on conical lugs to get you centered...get ET Conical lug nuts....they havce a shank on them that will center each wheel hole per stud, only back draw is that you cant just zip them on with an impact got to get at least 4 of them on there slowly and pull it in then get your other ones on....what a difference this has made! Hope this may help someone else!

I put new tires on and that solved my problem.