VRS 2007 issues with surging

[Danny_VRS]

Hi All,

Have searched the site but thought i'd post up my problem as you maybe able to assist.

I just got my 2007 VRS 2.0l petrol manual and have noticed in the last weeks or so that under accelaration there is a stutter or surge like feeling. I am new to turbo cars and have read about boost leaks and such but not sure if this surging / stutter in power is what it would feel like.

Could it be plugs or coil packs?

I am in South East Melbourne is there somewhere you would recommend i go to get them to check it out?

Thanks in advance

Danny

[Antiplastix]

Is the car standard ? Surging is usually associated with running lean, is the car running hot ?

[Martin]

have noticed in the last weeks or so that under accelaration there is a stutter or surge like feeling.

Stutter (hesitation) and surge (sudden power) are completely opposite - perhaps you could better describe what's happening?

If you are in a high gear and nail the throttle to the floor there can be a pause/delay while the DSG makes the "unanticipated" gear change (1.1 seconds) - this can feel odd and you will get a significant surge of acceleration once it's in the right gear - you can avoid this by manually dropping down a few gears, then you are ready to go

[Danny_VRS]

its completely stock, and a manual.
The sensation is no power, but comes in blips through the rev range. Was fine when i bought it a month ago and now not so.

I am only assuming boost leak on what i have read, but still not sure.

Will likely take it to a mechanic to check it out, but was kinda hoping it was an easy diy fix

Cheers

[donweather]

Smoke test should pick up any leaks. I'd check the DV cause does the 2007 model have the older DV?

[Martin]

Hmmm, a boost leak throws a CEL
Coil pack failure (normally number 3) has a much more significant impact (very common on cars that have a performance ECU flash)

How many km on the clock?
Does it run rough on the first start of the day?

[rsp8]

I've got some coil packs handy if the 2.0 tsi (147) is the same as yours and you want to borrow to swap out for troubleshooting. I have the same issue in a 2012 vRS but it's a DSG and only problematic with a bluefin tune, and fine in S mode...

[spud75]

Hi All,



I am in South East Melbourne is there somewhere you would recommend i go to get them to check it out?

Thanks in advance

Danny

I take all my VAG cars to Auto Union Deutch in Oakleigh.

[rsp8]

Mines booked in at Volkservice Braeside for the first time in a few weeks. Will let you know how it goes. I've always heard good things about Auto Union Deutsche as well...

[Danny_VRS]

Thanks everyone, I have also booked in at Volkservice Braeside this Friday.

After reading Martin's post i think it could be coil packs, this is my first turbo so straight away thought boost leak but feels like coil packs to me.
How do i know if the ECU has been flashed? is there a way i can tell?

Will let you all know what they say at Volkservice

Danny

[Martin]

No, coil pack failure has much larger impact and symptoms, you would not be driving it around with coil pack failure.

(Flashing the ECU is done for more power - APR, Recode, etc)

[Danny_VRS]

I understand why the ECU is flashed, but is there a way to tell. Not having driven a GTI or VRS before i have no base line for performance.

Will see what the mechanic says, either way i hope its an easy fix

[Martin]

if somebody is driving behind you a black haze from the exhaust, especially during the gear change, is an indication of a tuned/flashed ECU

Otherwise, without a benchmark a stage 1 tune may not be obvious (a stage 2 tune is fairly obvious as it's rather aggressive)

[Danny_VRS]

Ok, so got it fixed.

It was cylinder 3 coil pack.

Drives great now. Andrew at Volkservice was very helpful and fast.

Thanks for all your help guys

[rsp8]

Great to hear on both fronts. I swapped my coil packs for the red top ones, going to get some logging done but I suspect my tune doesn't play well with the DSG since it's fine in S mode and when shifting manually...