engine racing then stalling ? help !!!

wayoot99 · 17-06-2008, 20:46

I have a '99 Octavia 1.6 glxi and recently it starts fine, but occaisionally the engine will race (usually within a few minutes of starting) then stall and usually takes a few minutes before starting again.
Could it be the automatic choke or has anyone got any suggestions of what it may be?

Lummox · 17-06-2008, 20:54

Throttle body issue I would think.

Worth removing and cleaning out, then resetting with VAG COM.

Either that or an air leak, check your brake vacuum hoses.

KenONeill · 18-06-2008, 13:08

FYI, the Octy doesn't have a choke in the way that carburetor cars do. What it has is a cold enrichment system, which supplies extra fuel when the engine is cold and revving low, but in a much more progressive manner.

wayoot99 · 21-06-2008, 12:18

Happening more often now, started ok yesterday, drove for about 2 minutes with no problems then engine started racing, then lost power and had a rotten egg type smell.
Managed to drive back home and will investigate the usual suspects today.
Anyone got any further theories on what they suspect it may be?

KenONeill · 23-06-2008, 09:06

"Rotten eggs" smell is usually diagnostic of sulphur getting into the engine, normally from the fuel. Have you changed fuel brand recently?

bajanpete · 02-07-2008, 03:17

check your electric components, it may also be a sign of something short-circuiting

17-06-2008, 20:46	#1
wayoot99 Briskodian Join Date: Jun 2008 Posts: 15 Thanks: 3 Thanked 0 Times in 0 Posts	engine racing then stalling ? help !!! I have a '99 Octavia 1.6 glxi and recently it starts fine, but occaisionally the engine will race (usually within a few minutes of starting) then stall and usually takes a few minutes before starting again. Could it be the automatic choke or has anyone got any suggestions of what it may be?

17-06-2008, 20:54	#2
Lummox U18 Automotive Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,839 Thanks: 22 Thanked 661 Times in 556 Posts	Re: engine racing then stalling ? help !!! Throttle body issue I would think. Worth removing and cleaning out, then resetting with VAG COM. Either that or an air leak, check your brake vacuum hoses. __________________ Unit 18 Automotive Services

18-06-2008, 13:08	#3
KenONeill Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland! Posts: 10,415 Thanks: 58 Thanked 492 Times in 483 Posts	Re: engine racing then stalling ? help !!! FYI, the Octy doesn't have a choke in the way that carburetor cars do. What it has is a cold enrichment system, which supplies extra fuel when the engine is cold and revving low, but in a much more progressive manner.

21-06-2008, 12:18	#4
wayoot99 Briskodian Join Date: Jun 2008 Posts: 15 Thanks: 3 Thanked 0 Times in 0 Posts	Re: engine racing then stalling ? help !!! Happening more often now, started ok yesterday, drove for about 2 minutes with no problems then engine started racing, then lost power and had a rotten egg type smell. Managed to drive back home and will investigate the usual suspects today. Anyone got any further theories on what they suspect it may be?

23-06-2008, 09:06	#5
KenONeill Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland! Posts: 10,415 Thanks: 58 Thanked 492 Times in 483 Posts	Re: engine racing then stalling ? help !!! "Rotten eggs" smell is usually diagnostic of sulphur getting into the engine, normally from the fuel. Have you changed fuel brand recently?

02-07-2008, 03:17	#6
bajanpete Briskodian Join Date: May 2008 Posts: 46 Thanks: 14 Thanked 1 Time in 1 Post	Re: engine racing then stalling ? help !!! check your electric components, it may also be a sign of something short-circuiting

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