peugeot 106 quicsilver

friends I have peugeot 106 quicilver. When my car is LPG but runs on gasoline, the tachometer constantly rises and falls and when it is on the move, it gets frustrated and the car is self-contracting, and sometimes it speeds up ... I did not find a master who solved this problem ... There is no problem, they said idle sensor, I changed it anyway, the problem did not disappear ... I would be very happy if you helped me how to solve this problem ... my psychology is broken now ...

potentiometer buddy, I had the same problem in my car, I changed it, it was over:

I'm going to change it tomorrow. How much does it cost?

It would be good to review the map sensor, man.