vibration problem

[denviks]

hi all. i have a bit of a strange problem.i will try and explain it without trying to sound like a plank  :lol:

the first part of the problem is i have a vibration for 50mph upwards. its doesnt come in until i hit 50ish. it gets worse the faster i travel. first thing i thought was wheel balance. i have had them all done and its still there. so i then checked my wheel bearings. i had play in the 9-3 oclock positions and the 12=6oclock postions on front left wheel and rear left wheel. i niped these up and checked again and the play has gone all the way around. so i know know it aint wheel bearings or swivel bearings..
nect thing i checked was props. all the uj's are tight and lubed. i do have a tiny, when i say tiny i do mean it bit of play in one uj on the front. but i am thinking this would be a constant vibration......not like the one i have now....feels like an unbalanced wheel.
i have checked pretty much everything i can think of with no joy.

now i also have another problem which could be linked. as i come down from 30mph i can feel the truck pulsate.....i hold a steady break peddle and it feels like the brakes are on....off....on.....off..... i had the brake discs changed about 3 months ago on the front. i have been back into the garage that did them and they have run a few tests but so far cant say if they are to blame. they are now talking to the manufacturer to see what they say. could a warped brake disc cause this sort of vibration aswell?

im sort of all out of ideas now.....anyone think of other things to check?heres a list of things i have checked

transfere oil level
rear and front props
wheel bearings
swivel bearings
cv joints
rotated front and rear tyres.
ball joints on steering.

cheers guys n girls

[Budgie]

If your Disco is post chassis No: JA032850 then there are roller bearings in the inside of the front stub axle that the CV joint runs. I had one break up and it was the cause of a vibration I had at around 55mph, so that could be another idea for you.  

[denviks]

thanks mate......thats on the list for checking tomorrow.....

[discoman]

a warped tyre even if you have had a tyre ballanced and it is warped it will still vibrate

[denviks]

thanks mate....i will add that to my list of things to check. might put the spare on and run it up the motorway x4....

[denviks]

well had an interesting day. still waiting to hear back from the garage that fitted my front discs as to what they are gonna do.  :roll:  but i didnt waist this morning. i had the front hubs apart and the needle roller bearings are fine........

so i then checked the tyres by moving my spare one on each corner with no change. i then looked at the steering bar that the steering damper is connected to....it was bent downwards , so i put the jack under it and straightened it out. the steering feels loads better now. this might have been the vibrations i felt at speed....?

so i am slowly getting there    :D  :D

[Budgie]

That may well have been the high speed vibration problem as the tracking will have been out.  
May be worth getting the tracking checked if there is any vibration still there, just to be sure.

[denviks]

garage just called back....and it aint good.....well i dont think it is     ...now bearing in mind that yesterday they said the front right has a high spot on the disc. well apparently they have contacted the disc manufacturer and they have said to send the disc back to be checked. the garage are going to claim labour costs. so get this.....this means me paying 60 pounds labour again and they will credit it back to me in 6 weeks........ :shock:  urrrrr.......so if i did that im wondering if i would just hear back that " no the discs were ok " or " they were misplaced ".......

im really not happy with this arrangement considering they told me one of the discs had a problem.  :?

so im now sat here wondering what to do?

any advice guys?

[Range Rover Blues]

That sounds crap, but it's not uncommon.

You paid the garage to fit them?  then your contract is with the garage, no-one else.  It's up to them to sort it out, contact trading standards.

Did you pay by credit car? if so contact them, you are protected byt he consumer credit act

take the bloody disk off yourself and save the labour

have a good look at it anyway, are there rough patches in the surface? it'sa not uncommon for cast iron disks to be porous or sift under the surface, when you wear through the machined face the soft surface doeasn't wear as quickly because it shrinks away from the pads, so it become a high spot and causes the pedal bump you have fealt recently.

[denviks]

i did use a garage to fit the discs. they supplied them too as i was in a mad rush at the time  :oops: ...i normally do most things myself ( or have a go ) but as i was in a rush i paid them alot of money to do the job. i really wish i hadnt bothered now. i have been on the phone to the manager again and i asked him if i remove the discs and give them back will they refund the price of the disc and they said they would so this maybe another option for me to take.

i have also spoken to a mate who works with metal for a living. he said that when they are made from cheap metal then you can have a carbon in 1 peice of the disc, when it gets hot it doesnt shrink back to the same level as the rest of the disc.....so hense the high spot......does that sound right? is that what you just said mate  :lol:  :lol: ...

thanks for the reply, just trying to makes sceance of it all....i thought they were a very good garage , thats why i paid them for their time and effort.......wish i had just not gone on holiday and fitted them myself now      

[Range Rover Blues]

Your mate's right, it's cheap metal.

[Budgie]

How long ago were the discs fitted?

Cos they were effectivly under contract to supply & fit a set of brake discs. You paid them for the parts & labour, in good faith, and now one of the parts has been found to be sub-standard or faulty.

They should be replacing that part without charging you extra!

If YOU remove the disc(s) and give them back then they still have the labour cost in their till and you may as well have just handed that money over to them and driven off without them touching the vehicle!

I would be having another word with the manager and/or Trading Standards, providing the discs were fitted recently.  

[denviks]

hi mate....the discs were fitted at the begining of march.  :shock: . i know what you are saying about the labour. i was thinking about it most of last night to be honest, just sort of weighing up my options.
i think its either going to mean me loosing out either way or a long legal battle  :oops: ....why cant life be easy.

if i let them take the discs off and charge me 60 pounds for the pleasure i can see whats going to happen. they will send the discs back to manufacturer, they will say  nope these discs are ok and put them in the bin. the garage win and the disc company win but im out of pocket buy 120 pounds for 2x labour costs. so i definatly aint going down that route,

[Budgie]

What I find hard to understand with this is that; if the garage has said that THEY found a high spot on the disc that THEY supplied, why does it need to be sent away for confirmation and is your Disco going to be off the road until the results come back?
Seem a very strange way of working for a £20 part, especially something that is so safety related!!

Although saying that, it could be the fact that nothing has shown up for nearly two months and they could argue that it's to do with your driving style or something daft like that.  :(

I think I'm with you on removing & returning the defective disc and getting a new one yourself if they insist on going down this route as it'll probably work out cheaper. Just remember this if you have to use them again in the future.
Quite often, if I don't have time to do the work then I'll supply the parts to the garage and get them to fit them. Normally works out cheaper and I know where the parts came from.  

[denviks]

thanks for the reply again mate..... i think i might end up just doing the discs myself and then taking them back for a refund. i have had a result today on another front though. about time i got lucky. i have always thought that the pulling of the disco below 30mph and the vibration over 50 mph might have been 2 seperate things. but after having the wheels balanced at a majour NATIONAL tyre and exhaust place i thought i had eliminated this from my list. urm well maybe not. i had all 4 done again today at a different company and the results were shocking to say the least. i watched them do it and they showed me the results. here they are for you to look at. these results are wheels straight off the vehicle and on to the machine. this is how much they were out by.

N/S/F   out 35g
N/S/R  out 120g
O/S/f   out 70g
O/S/R   out 30g
spare    out 45g


these were done by the other garage on monday. so as you can see they were along way out. after having them done by the new garage today i took the truck out on to the motorway for a test run. wow she is almost smooth now. i still have a tiny vibration now but no where near as bad. i am now going to re examine the props.

all i need to do then is sort out the braking problem,

[needbeer]

hi mate have you sorted it as the garage suppied and fitted the disks there at fault and its there problem to sort it out. They cant go around fitting dodgie parts to motors. ive just fitted new disks and pads what i got from paddocks

[denviks]

hi mate.....not yet. i have sorted the vibration problem now. i have looked at paddocks discs but cant decided which ones to go for  :? . there are the cheap ones or the ones that are double the price. which ones did you go for?

i am still in prosses of putting enough money together to do the job.

the one dessision i have made though is i am going to take the discs off myself and teake them back. i really dont want the garage working on my truck again. who knows what they will break or screw up next time  :shock:

[needbeer]

i went for the cross drilled and grooved disks they was £40 the pair £12.50 for the pads they work really well in the mud and on the road it took me about two hours to fit them.