kosman

my car vibrates really loud on over-run,ive checked loads of things,its not the engine or running gear,nothing to do with turbo dampers or wastegate penny etc,but its stopping me driving it now,it does it between 1500 and 4000 revs,and its slowly getting worse,could it be a wheel bearing,but ruled that out because it does only do it on over run,driving me mad now

help please!!

charlie luciano

iTrader: (3)

Propshaft doughnut/centre bearing?


Luciano

big mac

iTrader: (7)

or a broken diff???

tabetha

As it's 2wd have you checked that the rubber boot is still attached correctly on the bellhousing clutch fork, I say this as mine pops off every now and then and it is seriously loud, but only ever on the overun, it vibrates on the alloy edge of the cutout through which it passes in the bellhousing.
tabetha

kosman

both been done but cheers for ideas

kosman

no not checked that,ill give it a look later,cheers

neil andeRSon

iTrader: (3)

its not your mum's cat stuck in the prop is it??

rs2klee

what exhaust system have you got? sure its not touching anything, check the rubber mounts! also the engine mount bolts, i had a simular problem, ended up being the turbo to manifold lower bolts worked loose and vibrating, as mine didnt have studs to had to use nut and bolt etc, got the nuts from GGR and high tensile bolts from ebay, with new gasket.

kosman

its a 3.5inch scorpion exhaust,i already checked the turbo to manifold bolts,ill have a good luck round the exhaust,it does sound like its coming from underneath the car

edit ill chech engine mount bolts,never thought of them.

rs2klee

cool would be a pain and i did it but check everything from the front to the back of the engine down to the propshaft gearbox bracket, bellhousing bolts, starter motor anything that could work its way loose.. what about the turbo oil return pipe? one of mine was loose could be anything untill its all been checked! you end up finding other things while looking for the main problem! one i did find on a mates was the oil baffle in the sump.. the bolts were loose inside and causing it to vibrate/rattle!

kosman

cheers mate,ill give it a good look over next weekend,cheers for the ideas,ill update with what i find

JoeRS22

iTrader: (2)

kosman i had a rumble on my old cossie and it had a scorpion exhaust, it turned out to be downpipe vibrating on gearbox bellhousing, there was a gap when i looked but when driving and you let off the gas the engine moves one way and it can touch.

kosman

nice one pal,i'll give that a look aswell

biggiejody

iTrader: (3)

thats what mine is doing right at the moment, also gets worse when turnong hard. just cant be arsed to realign the exaust lol

JoeRS22

iTrader: (2)

its getting the exhaust nuts on turbo undone normally cooked lol

tabetha

The scorpion system normally rubs on the anti roll bar unless dead right at about 3/4" gap.
tabetha

kosman

its looking a lot like exhaust could be the ballache then,i hope it is that,easy fix,bout time i had one on my heap

kosman

mines not got the rubber boot? i take it its completly come off? do you know where i could get another one?

kosman

i checked mine today and it has about a half inch if that gap,so could well be that,also one of the exhaust bolts on the turbo have been tightened but the other hasnt,i can see a clean bit of thread,and the other thread is rusty because its not been adjusted.