hi all , have a question in regards to a vibration problem i am facing at the moment in my vlt , thought maybe someone has had this problem in the past and could point me into the direction of the fault when driving between 2000rpm-3000rpm i get a viabration under the car ..... in saying that anything before 2000rpm or after 3000rpm and there is no issue , i find it quite strange to say the least the car has a built protrans turbo 400 gear box and a single piece tailshaft , with the standard b/w diff any help would be much appreciated !

Do you get the vibration in every gear between those RPM, or just 1 specific gear?

all gears bud

tailshaft? possibly hitting the tunnel?

thats what i thought initially but , would be doing it constantly , plus the car is at standard height

Is it a new install, or has it just started all of a sudden?

just happened recently , every thing has been in the car for a long time now , like i was saying it only happens in the 2000-3000rpm range , any where under 2000 or over 3000 the car drives fine

The issue would have to be somewhere between the harmonic balancer and the transmission input shaft if it is relevant to engine speed.

I just had this on my car. Not a Vl thou. Does it do it in park also? If so try your trany mt. Mine did it between those revs driving or parked.

My brother had a similar issue, It would only vibrate at a certain rev range.Over or under it was fine.. It turned out to be the auto.

yeah in park or neutral its fine no issues at all with it , its only when the car is driving in those rev ranges it has the vibration , its not a massive one but enough may i add the car still shifts spot on between gears and so forth

Does it come n go at those revs? Like if u held it at 2.5k would it vibrate then be fine then vibrate.. So on?

if im driving at those revs , im fairly certian at the time it was constant just between those revs ..... i can specifically remembering it on that rev range , last time i drove it was the day it happened which was 3 weeks ago .... so i couldnt tell u if it came and went , it might of but i do remember it would be worse at times then others i thought maybe it may be a mount or something tail shaft related

Yeah I honestly think trany mt. N I think mine cost 30 buks. So it's also a cheap place to start.

yeah i pray its that , or something tailshaft related .... because the gearbox still operates fine with no issues at all

Well let us kno how ya go wit it.

Exhaust hitting? Mine does a bit and ****s me hard

A few exhaust spots to check. - panhard rod - hitting the trans pan - generally anywhere along the floor pan - shagged cat convertor, makes a vibrating sound but wether you can feel it not sure. - cracked trans mount Those are just some problems ive had over the last 7 years with vls

Thanks jase , ill have a look