Jetta 91 suddenly revolutionizes or turns off

Hello forum partners I have a problem, in the Jetta A2 91 I am with the normal car in sudden

It is possible that the "air/gasoline" ratio suddenly varies due to some air inlet into the engine.

It would be good for you to indicate which engine carries your car to be able to go directly to the possible causes, because right now with the data I have is to give blind sticks.

In principle that seems that, an air intake by the servofrane or by some lazy or broken admission tube. Although it can also be a problem of Lambda probe if it carries it (I do not know) in which case the fault light would turn on.

All the best.

Good morning I have a 2001 Chevy Corsa that happens to it and it is accelerated and the IAC and TPS valves can change but it continues with the same failure that may be ..... greetings

To Corsa Czech the Parete from the central bolt of the Damper.