Moin said yesterday I was surprised by the instrument cluster of our elk with the yellow motor light. The error P0171 (mixture on bench 1 too lean) was stored. During the ride there was no impairment. Had only a strange phenomenon two weeks ago: On the highway at approx. 100km/h in the 5th gear (automatic) times the socks pressed on the pedal: Automatic switches down, speed torments up and there was a loud suction noise to hear (similar to open air filter or r Intake noise after cold start) noticeably less power. But only two times up, without MKL and then the moose ran again normal. After research in the net, the following causes come into consideration: – LMM defective (have I removed and cleaned) – hose crankshaft ventilation to the oil trap (was changed about 2 months ago after defective already) – false air, here the rabbit is in the pepper Have been able to detect a hissing in the running engine in the range of the battery, the hoses with brake clean The hose, which goes from the vacuum pump next to the battery to the suction bridge (see picture). At first glance there was nothing to be seen, since there was still a kind of protective cover over the hose. This was removed and there was already a hole to be seen. I got it temporarily sealed with insulating tape and hope that this was the fault. After research in the net it is probably the parts number: 30736693 vacuum hose and seems to be only available as a complete part. Are there alternatives to the original part (if still available), at Skandix I didn’t find it? Thanks for information.