Hello, I bought a Twingo for my wife three weeks ago (Bj. 10/2000; 43 KW; 86TKM ). After a long drive I noticed some problems. On the one hand, the engine starts to jerk insanely when it is in the lower speed range (gas only slightly pressed). It feels like it jumps out of its suspension immediately. Then the engine runs in idle a bit, but does not run out. For a G-Kat car the exhaust gases also stink quite well and economical is the lean When I looked into the engine room a few days ago, I noticed that the plug was not attached to a sensor (see pictures). What does this sensor have for a function? When I connect the plug to the sensor, the motor runs round at first, but after a minute it turns up at idle (about 2000 revolutions) and goes out at load (then the indicator lights light up). Where could I find the error? Could it be this sensor? Many greetings Jeffrey