Clunk when transitioning to engine driving and engine braking (on/off throttle)

[kaanage]

Does anyone know why my car has started to make a slight "clunk" sound when the engine loading reverses?

It wasn't doing it before the weekend

[vwthunder]

Guess when you go out on the track and drive the wheels off it, things will happen.

Do you mean when you back off the power? Could be swaybar links, by car does it when i am backing off the power hard, but its a lot lower than yours

[kaanage]

It happens even when the transitions are really gentle like if I feather the accelerator up and down
Do you think it could be an engine or gearbox mount? It's got less than 16,000km on it

[vwthunder]

It happens even when the transitions are really gentle like if I feather the accelerator up and down
Do you think it could be an engine or gearbox mount? It's got less than 16,000km on it

Its only a slight clunk, hmm dont know, could be anything realy, something has moved and knocking, mounts, suspension

Sorry not much help

[Gti Dave]

Hmm...sounds like it could be engine or gearbox mount since you describe it happening that way.

[seangti]

Do you think it could be an engine or gearbox mount? It's got less than 16,000km on it

That was my first thought, engine mount. If it's under warranty take it back. I had suspension components changed under warranty and I'd been tracking my car, and they changed the strut top mounts after I'd lowered it. IMO - unless you're being particularly aggressive (no mechanical sympathy) on the track, you're not too likely to break new components so I wouldn't be too worried about that aspect.

But I don't know your driving style

[kaanage]

I drive like a granny - aiming for 1100km on this next tank.

OK back to the stealer she goes - an rattle has redeveloped in the door too, that they fixed after a previous cruise (might pull the CAMS sticker off 1st, though).

[vwthunder]

I had suspension components changed under warranty and I'd been tracking my car, and they changed the strut top mounts after I'd lowered it. IMO - unless you're being particularly aggressive (no mechanical sympathy) on the track, you're not too likely to break new components so I wouldn't be too worried about that aspect.

But I don't know your driving style

Hahaha you dont know gregs driving style, hmm on the track he is very agressive, I think most people would agree with me, he has to be agressive, because he thinks he is a F1 driver

Oh he used to race bikes too

[kangfu]

Just quickly undo your swaybar links and go for a drive to see if that fixes it. After a 'spirited drive' one day i came home and car was knocking when reversing out of my driveway. Was just my links loosened from the drive day.

[seangti]

Hahaha you dont know gregs driving style, hmm on the track he is very agressive, I think most people would agree with me, he has to be agressive, because he thinks he is a F1 driver

Oh he used to race bikes too

haha, so what he lacks in power is made up in aggression and enthusiasm.

[kaanage]

Actually, I kinda felt like the Polo had somehow got into the middle of a touring car race in a couple of the sessions on Saturday as I was all mixed up with a pack of Falcadores, some marginally faster than me (which I let past when they got up to my tail) and some marginally slower (which failed to do likewise).
Somewhere in there was were I picked up the dent, too

[kaanage]

Tested a bit this morning by coasting in neutral on flat, uphill and downhill grades and then braking hard and soft - no noise.

I guess it has to be an engine/gearbox mount

[GoLfMan]

Tested a bit this morning by coasting in neutral on flat, uphill and downhill grades and then braking hard and soft - no noise.

I guess it has to be an engine/gearbox mount

bit of a bugger. Maybe have a go at checking the tensions on the mounts?

Or what about the DMF? Could that be failing? I've noticed a clunk when I back off too.

[kaanage]

Or what about the DMF? Could that be failing? I've noticed a clunk when I back off too.

But it's only 16,000km old

[GoLfMan]

But it's only 16,000km old

There have been stories of them failing long before then......