Opel Vectra B 1.8 125km Z18XE - VB 1.8 Z18XE tugs at low revolutions after the h

Hello,

I was looking for a forum, but I did not find an entry that would describe exactly my symptoms, which is why I assume a new topic.

I have a problem with my VB (1.8 125km 2001, Z18XE engine), and now, when the outside air temperatures low, my vectra began to tug at the speed after heating the engine. In addition, the error P0170 pops up, from what I found is the composition of the fuel mixture. It does not always cause Checka to light up immediately. The jerking takes place only at low revolutions, for example when I stand at traffic lights and increases with increasing engine temperature. When driving, when the engine speed is higher, I do not notice any symptoms, the car also seems to turn on the normal speed and does not seem to lose its power. Until now, I managed to clean the throttle, replace the oxygen sensor and replace the candles. I wonder if the flowmeter may be guilty. I am asking for your opinions.

In our vectrze we had the same (1.6 16V, 101KM, 1996 zlotys, the engine probably is Z16XEL).
We've done everything you write about and it just did not help, it turned out that we had a hose from the vacuum sensor (this is what the mechanic called it), it is on the right side under the hood closer to the windshield of the car).

I put a picture below (the first one better from the Internet, I marked it with a red circle where the sensor is located). The sensor has a green color, the housing is plastic and a hose comes out of it, which in my case burst and the check engine lighted up and the car jerked at low speed.

For me there is a little different engine and there is no sensor in this place that you suggest with me

kameleon1986 wrote:

I wonder if the flowmeter may be guilty.

Disconnect the flow meter plug and write how the motor behaved.
Connect the diagnoscope and describe the errors

Search for leaks in the inlet, according to I'm sucking a fake air.

CameR, I have already disconnected the plug from the meter, but I did not check the errors. What I definitely noticed with the disconnected flow meter is the rushing idle speed. They jumped from almost choking the engine to almost 1500 - 2000 revolutions. I will try to unplug it again and read the errors.

Hello, if the problem could be solved, I have an identical problem and I would ask for a hint whether it worked and what was the reason

In the meantime, a new symptom appeared to me. You can hear the engine sucking left air. Turns began to go crazy. I managed to find a hole in the inlet behind the flow meter. On Tuesday I give to the mechanic and he will replace this part of the system. Now I suppose that the hole could have been earlier and the engine vibrations slowly increased it. I will write after the exchange if all problems have disappeared.