VW PARATI 1.6 MI 99 FAILURE IS CORNING HELP

Estimated, I don't know if someone can help me I have a parati 1.6 mi of 99, the problem it presents is the following in certain increasingly frequent occasions the revolutions are lowered and the car goes out or as long They changed spark plugs, they checked cables, I changed the lambda probe they have spent a considerable money and I continue with the fault, today more than before taking it to the workshop, before it failed the month or 15 days now it is passing one or two days the strange thing is that the fault does not give every day not every moment at times walk like a bronco horse walks a meter a meter stops and I do not know what they do not give me what they do not give me what they do not give me what they do not give me what they do not give it to me and I leave the car, I leave it two three diad they give it to me and then it remains the same and worse,
lately accelerate a little and it is accelerated in a few occasions and then the revolutions begins to fail again and the revolutions are lowered and this does not happen more often in 1st or 2nd march, by the way the injectors the injectors the distributor's cover, the ignition coil and remains the same, someone who can tell me that I can tell me that I can tell me that I can tell me that I can desperate.

Hi, am I Alex. The Gasoline Pump Relay is changed?

Thank you for answering, you think that is that, the truth has not been told in any of the sites to which I have taken to the car that that piece has changed me anyway I will find out if it is not very expensive I buy it and I change it to see what happens, thank you for your help if they have any other idea whatever I thank you.

OLLEYO TUBE A similar problem with a sling in my client, the car was stirred when he was walking if he lacked gasoline and then that he wanted to accelerate and did not accelerate and went out a little and then he pretended and comosin Help this information or Czech Quecodigos teda the computer and abseame talebes I can help you

Thank you all for answering I will try the relay and with respect to the Crack sensor I can't find my car.