Tranmission Rattle In 1st/2nd Gear

[wiggum]

Hi guys

 

ive noticed that my 2003 tdi 130 galaxy has got a tranmission/drivetrain rattle, it only occurs in mainly 1st gear when accelerating up a hill or off the mark quite agressively, it is still there if you gently and gradually accelerate away in 1st just not as severe, it also happens if you are coming down a hill and drop it into 1st so that the revs pick up quickly holding you back.

 

in a nut shell the rattle/grateing comes from the centre of the car low down somewhere between the gearstick and engine, it is not the engine as it revs quietly when tested, it is worst when you put the most torque through the tranmission.

 

i know these galaxys have some fancy driveshaft system and was thinking it could be that making the noise under harsh acceleration/deceleration.??

 

last year the car had a new dual mass flywheel and clutch kit etc so ive ruled that out.

 

you can drive it quietly in all other gears and speeds..just a low speed high torque issue

 

if anyone has had similar and could point me in the right direction i would be very greatful

[chrispb123456]

Check the roll restrictor (rear engine mount) you will need to remove the undertray to do this.

[wiggum]

ok will do

[wiggum]

ah the roll restrictor is fine, no movement and bolts secure..naybe driveshaft then

[f0ster]

when it makes the rattle if you put some weight on to the clutch pedal, just enough to prevent it from slipping does it reduce the noise or even make it go away

[wiggum]

it sort of does..but if you ease off the throttle slightly it will also quieten it down a bit, if you just keep the throttle down and rev it right through the range the noise stops at around 3000 rpm, i think it is the intermediate driveshaft, i think i will just have to get frauds to have a look at it, dont want it breaking down with the wife and kids in.

[chrispb123456]

it sort of does..but if you ease off the throttle slightly it will also quieten it down a bit, if you just keep the throttle down and rev it right through the range the noise stops at around 3000 rpm, i think it is the intermediate driveshaft, i think i will just have to get frauds to have a look at it, dont want it breaking down with the wife and kids in.

This is sounding more like DMF/Clutch than driveshaft!

[wiggum]

i do get a very slight wheel wobble when its making the noise, and as i said dmf and clutch etc were done last year.

[f0ster]

hello again

you say that you have had a new dual mass flywheel and clutch, are you sure they installed a dual mass flywheel, it is just that it is possible to get aftermarket flywheel/clutch kits for these that are not dual mass, you can fit them as a direct replacement for the dual mass version and off course they are a lot cheaper to buy, I have fitted one in the past due to extortionate cost of the dual mass version, the transmission chatter is common on some diesels prior to the introduction of dual mass, by pressing the clutch pedal to the point of slipping you dampen out the oscillation that is taking place.

[wiggum]

yes it def had a good quality DMF, (luk or lux something like that), also clutch and bearing etc.... have done some tests this week, when the noise is chattering if i turn to the left the noise is worse but if i turn to the right the noise quietens as you turn with basically no noise at full right turn.

 

this says to me it is the driver side driveshaft that is making the noise