help

Danny · tinkerer Joined: 10 Oct 2001 Posts: 100

i dunno whats goin on but when the gem does exactly 100 it sorta hums like somethings vibrating or something i dunno it could be the exhaust ive been told but i dont think thats right

any help would be greatly appreciated
cheers
danny

Badger · tinkerer Joined: 13 Feb 2002 Posts: 155

probably you have a panel or something which has a harmonic at the frequency at 100km/h. all you can do is try to find out what it is and make it a bit heavier or damp it. a bit of silicone on the panel etc should do the trick, IF you can find what it is...

Phil · Posted: Mon Mar 18, 2002 1:54 pm Post subject: Re: help

Yeah me and my mate (who also has a gemmy) have that same problem. Right on about 105km/h something hums really frikkin loud (I thought it was the diff)

RedTG · tinkerer Joined: 04 Feb 2002 Posts: 136

Mine too, but it is the new tyres, could be anything, something rubbing under the bonnet, err wheel bearing, diff, panels, who knows??

Regards

Mooch · backyard mechanic Joined: 17 Oct 2001 Posts: 573

had the same prob on my TE, and just recently solved it on the wagon too. During the recent sorta rebuild we replaced the wheel bearings and also had the tailshaft re balanced. If it's at that speed on;y it means that is something that spins at a certailn rpm. If it was anything else it'd only do it at that rpm in any gear. ie say u r doin 3500 rpm at 105 kays, then at 3500 in 2nd gear it would also do it. However the tailshaft and wheels on;y spin that fast @ 105 kays regardless of engine rpm. If it gets worse when u steer either left or right a bit it's the wheels bearings.

Get them done anyway, doesn't hurt to and ur stubs will thank u.

RedTG · tinkerer Joined: 04 Feb 2002 Posts: 136

Is yr car a 4 spd or 5 spd, could be high revs???

regards

mana · tinkerer Joined: 06 Feb 2002 Posts: 169

yeah i had that aswell- check the amount of free play in the torque tube

Gene FJ20DET · Posted: Tue Mar 19, 2002 12:09 am Post subject: TOO LOW!!

if u have lovered ya car then it most probably be the tail shaft. iv had it happen to 4 geminis and i experimented over and over and thats what i found it to be. u just have to put up with it. if not it will be ya tourqu tube center bearing/rubber
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Pete · backyard mechanic Joined: 05 Oct 2001 Posts: 502

is it more the rpm?
if its 105km/h ONLY then it has to be the tyres.
if its 4000 rpm then its a pannel/loose bolt etc.

greg j · backyard mechanic Joined: 05 Oct 2001 Posts: 534

thanks gene i think u just solved my problem too.
greg.