Accelerator surge on A3?

Kerplunk · 27 Oct 2010 at 12:05

On my audi A3 1.8T Im not sure if there is something wrong or if it is just me...

When idling the car is fine, if I put down the accelerator the revs go up and all is ok.

When putting it into first gear, the slowling driving away lifting the clutch up there seems to be something I can only describe as a dead spot or something with the accelerator going down it will hit the dead spot then almost do a surge and bolt forward :confused:

...its hard to explain, but thats the gist??

Any ideas what it might be? or is it just me lol :confused:

Defcon5 · 27 Oct 2010 at 12:06

Is it only in first gear?

Kerplunk · 27 Oct 2010 at 12:08

And second, but not as noticable, then I guess 3rd as well but again not as noticable as 2nd..

Iceman · 27 Oct 2010 at 12:10

Could it be an engine misfire?

Nomisf · 27 Oct 2010 at 12:13

Do the revs climb a little too high then fall just as the car surges forward ?

If so, the clutch may be slipping?

Kerplunk · 27 Oct 2010 at 12:14

The revs seem ok, they dont move at all without me accelerating :/

g60dubster · 27 Oct 2010 at 12:15

if clutch is slipping in 1st, then it would be slipping all the time and you not get anywhere!

suspect either sticking throttle cable or throttle body.
If it's drive-by-wire then may need an adaptation to reset the sensor.
If cable fed then check the cable for smooth operation.

Firestar_3x · 27 Oct 2010 at 12:16

Things like a reoccuring missfire will bring on the EML, an EPC (Electronic throttle) error will also bring on that light.

Do you hear any air noises when you try and pull away?

Phate · 27 Oct 2010 at 12:16

Sounds like the engine has a flat spot to me.

Kerplunk · 27 Oct 2010 at 12:17

No air noises at all, ive noticed a slight squeak from the clutch when going up and down ?

Clarkey · 27 Oct 2010 at 12:18

sounds like a typical turbocharged engine to me

Kerplunk · 27 Oct 2010 at 12:18

Clarkey said:
sounds like a typical turbocharged engine to me

As in? Is it normal?

paradigm · 27 Oct 2010 at 12:25

Clarkey said:
sounds like a typical turbocharged engine to me

I wouldn't say it's "normal" but my LCR can quite happily keep accelerating for a split second on its own depending on when I lift off the throttle. It's odd.

Stormster · 28 Oct 2010 at 00:14

Unplug your MAF and see how it behaves...

brakeinup · 29 Oct 2010 at 10:57

Isn't this something to do with the clutch switch at the top of the clutch peddle?

http://www.audi-sport.net/vb/search.php?searchid=1207321

LSPIII · 29 Oct 2010 at 11:18

brakeinup said:
Isn't this something to do with the clutch switch at the top of the clutch peddle?

http://www.audi-sport.net/vb/search.php?searchid=1207321

Agreed, this sounds like it could be the good old clutch switch problem. Basically when you depress the clutch under acceleration, it revs a little. This is indicative of a faulty (or incorrectly replaced) clutch switch. I had this exact issue. Is this what happens?

They are peanuts to buy and a cinch to fit.

233 · 29 Oct 2010 at 13:58

paradigm said:
I wouldn't say it's "normal" but my LCR can quite happily keep accelerating for a split second on its own depending on when I lift off the throttle. It's odd.

snap our lcr does exactly the same thing

mjt · 29 Oct 2010 at 15:58

My Leon did that from time to time and it's very common according to others on seatcupra.net, too.

[SKR]Phoenix · 29 Oct 2010 at 16:03

Same issue when I had my Cupra 180. It's an odd feeling for sure.

However, it did go away when I swapped the crappy diverter valve for a Forge 007.