JoeB007

I have 2 noises I can't figure out.

#1) Vibration/rattle noise comming from front. I can hear it when the car is in gear and I'm moving it very slowly - like pulling in or out of my garage. It doesnt happen when reving in neautral, and doesnt happen at higher revs/speeds. Sounds almost like a loose heat shield rattling around, but only happens as stated above.

#2) Metallic sound that comes from the rear of the car. I can hear it when excellerating from a stop or slow roll. It sounds like a metallic "clicking" sound.

Any ideas what these noises could be? I had it at the dealer twice, but they didnt solve them or explain whats causing them, I have an appointment to bring the car back this week. Its under CPA warranty.

Thanks for any help you can give!

JoeB007

CPO warranty I mean

TTschwing

If the front rattle is synchronized with your AC compressor coming on it is the serpentine belt tensioner, A bad one will rattle. This will happen at low RPM's and disappear with increased engine RPM's

In the rear, the Vacum operated exhaust flapper can sometimes rattle (sometimes loudly). Many guys block off the vacuum line leaving the valve open all the time and rattle free.. Search Exhaust flapper Mod for this one.

JoeB007

The front rattle happens regardless of the a/c being on or off, it doesnt look like the two are linked . . . it also dissepears when the car is placed in neutral . . .

I was thinking the exhaust flapper could be the metallic clicking problem ... ill look into that one

TTschwing

could still be the tensioner....It may be very weak and rattling just from the drag of the PS pump and alternator. Get up there and listen closely..The tensioner is just behind and below the Alternator pulley..

JoeB007

the only time I can get close to listen is when the car is stopped, and at that point the rattle is completely gone ... I just hear it in gear moving slowly

Kenghh

that is coming from the front. It sounds like "knocking" and it's more like coming from the front and underneath the car. The noise also appears when you put it in D and gradually release the brake paddle and the car is about to move...??

JoeB007

mine appears when the car is moving slowly, sounds more like a loose heat shield vibrating than knocking ... I am starting to suspect something wrong inside the dsg gearbox, but Im not sure ...

lkfoster

The wife's '04 has been in twice for a clunking noise at the rear when taking off. The dealer has re-seated and lubed(?) the suspension spring seats. Sounds fishy to me, but it works.

TT-Square

1 - tick-tock sound in engine bay (thought it was in the cabin somewhere) - loose engine mount(s). Would hear this when accelerating/stopping. FIXED/REPLACED.

2 - loose rattle noises in cabin - driver's seat rail lock, privacy deck and the lock/latch for the hatch (teflon lubed).

3 - rattle noise from left rear quarter - brake dust shield (?) it's calmed down since I first noticed it. Fix on next tire rotation.