Opel Corsa C 1.2 2003 - "Car key" indicator and oil lamp

Hello, from yesterday I have Opel Corse C 1.2 2003. petrol.
I have two problems:

1) This problem has occurred from the beginning.
In each run at approx. 3.7-3,900 I feel as if I have completely taken my foot off the gas, and then after 0.5-1 sec. when I press the gas pedal pushed to the floor. it 'goes' again, but with this power drop the 'car key' indicator lights up and goes out after 3-4 seconds.
I will add that the car responds slowly to gas. I press the pedal "into the floor" and it takes about 1.5 seconds. it starts to spin on the turn.

2) This problem occurred when I was driving about 80km / h to repair a high mountain. The oil pressure light went on and then went out. And from that moment in random moments it shines, but it is only "flashing" for 0.5 sec. He can hang on when I get to the lights at ease.
The oil was flooded on Max in Saturday. On the blades, the mechanic could see that the engine from the bottom was covered with oil, but as the car stood all night, there was no sign on the sidewalk after the oil (and so the guy from whom I was selling).

What can be? The fuel filter was replaced with the oil.

Added after 5 [minutes]:

This "car key" is control lamp no. 1:

You have to read the errors and check the oil level. If it's ok, you have to measure its pressure, you will not think of anything in the dark.

I understand.
Tomorrow I will go to my friend and I will read the mistakes.
The oil just checked again from yesterday did not change its state (max).

Will the problem with oil pressure show a computer?

No, necessary manual gauge measurement.

Only at the weekend I will be able to connect the car to the computer, and I do not want to pay for a mechanic.

The case with the oil control now looks like this:
Oil, how many there were. On a cold engine it's ok, when it warms up and I get to the headlights at low speed, the indicator lights up at low speed and shines. When I add a little gas it goes out and after a while it lights up again. I read on forums and in the best option it can be an oil pressure sensor. It is not very wet, but it is not dry.
Firstly, I will replace the oil pressure sensor. Is the plastic element behind the green gasket should it be wet in oil after disconnecting the plug from the sensor? Does this already indicate its damage?
If that does not help, I will go to the workshop to measure the oil pressure.

I still have a small question - I know that 10w40 oil is now flooded. But I do not know what company. Does it have any meaning or no matter what company is pouring in and will it be ok? I once heard that oil should not be mixed.

MrDoimer wrote:

If that does not help, I will go to the workshop to measure the oil pressure.

Get rid of it right away because it may well be the sensor's fault and it's possible that you're just blotting the engine.

The oil problem is solved by replacing the oil sensor.

Under the computer showed only the P0100 error, ie the error of the air flow meter.
But the flow meter works, i.e. the computer shows that it gives the air dose well. This is how it looks on the 1st, 2nd and 3rd gears when dragging up to 6,000. rotation.
I bet it is an EGR valve. Possible?

What is diagnosed? The error description looks wrong.

Quote:

over the weekend I will be able to connect the car to the computer, and I do not want to pay for a mechanic

Probably a diagnosis of an elm and a smartphone

sk700 wrote:

What is diagnosed? The error description looks wrong.

I was at the mechanic's diagnostics and he told me that there is an "Error in the air flow meter".
I added this number P0100 because it also showed me the error with the "gas + brake" method.

This is the google error code and car model. The flowmeter's errors are at least a few different, you had to take a picture, it would be immediately known what it was diagnosed.

After disconnecting the meter it flashes until it's nice.
Tomorrow, I buy a replacement for PLN 130, because Bosch or Delphi cost PLN 300-500 each

So that you will not be surprised with the replacement.

Buy a used original, a replacement for PLN 140 is money thrown in the mud - it will work like this one now, or even worse.

tzok wrote:

it will work like this now or worse.

I bought (I have not read your posts) and is currently working very well.
Is there no guarantee for him? Purchased in the intercars.

The guarantee is theoretically, but what's after you as in return you get the same ... we'll see how long it will work, how it will last half a year, start to play in the photo

Ok, thank you for your help, best regards