ABY Engine cut off.

[Bjoern]

The engine in my S2 Avant 1994 is acting strange. When I am accelerating soft it’s OK. When give it full throttle, the engine stall, just like it’s been cut off.
Is there anybody who knows what’s wrong or where I start too look.
It’s fills just like the fuel or the ignition cuts off
Sorry for my English, hope you understand and can help me.
Kindly Bjoern
Denmark.

[BRY]

Sounds like overboost protection.
Check all your pipes for a boost leak.

[s2avantdk]

ja den overboster, jeg har skiftede den ventil der styre ladetrykket da min gjor det samme. den sidder bag V. forlygte, med 3 slanger på. og et stik.

[BRY]

That's easy for you to say

[Bjoern]

Thanks (tak). s2avantdk, venstre - fra førersædet eller forfra?

[s2avantdk]

forfra, prøv evt. at for slettet fejl på den først.

[Bjoern]

Sidst jeg fik udlæst, var der var der kun fejl på hastighedssignal. Fik den rullet d. 20/5 = 244 Hk. & 340 Nm. Kurven var noget ujæv, som om motor satte ud.
Hvor i landet bor du.
Jeg er "Firserfan" på Audiclub.dk"

[s2avantdk]

he he, det er martin her. hvid S2 avant.

[Bjoern]

Hej. Underligt med min bil. Har oplevet det et par gange før, men nu er det blevet helt galt. De sidste 2 gange lige midt i en overhaling. Rigtig ulækker fornemmelse. Er ventilen kostbar.
Bjørn

[s2avantdk]

mener det var omkring 400 kr.

[Bjoern]

Ok. Det kan man vel nok ofre på slæden. Fik solgt min gl. 1993
A 80 2,6 Avant sidste fredag. 99 K. er vel ok for en 13 år gammel bil. Lad stikke hovederne sammen en dag og få en S2 snak.
Godnat.

[Bjoern]

Hey again.
Sorry for the danish. I found whats wrong. It was the boostvalve. I gave the plug some contact pray, and now it goes nice and smothly.
Kindly Bjoern.

[Olle]

hi, i have the same problem and coan not fix it. when you said "boostvalve" - did you mean WGFV aka solenoid valve? tak

[Bjoern]

Hey. Yes thats the valve. But i have mine off and testet it, and there was no fault. Maybe it is the signal to it??? On my S2 it com and go.
Bjoern

[valjo]

you could test your WG diaphragma, boost leak, and dogy LMM. i had some problems and i solved it with cleaned LMM and then with new one from bosch