Hyundai Accent lost strength

Hello friends, I have a Hyundai Accent 98 ", they disassembled the board to check the ampoule that marks without benzina. The next day the engine loses strength the Klm needle. It begins to shiver, my question is, when disassembling the board will have moved some sensor? Does the board influence a sensor or can it be something else?

The board does not bring sensors installed what it brings is a velocimetter piola or revolutions if it is badly placed this failure, on occasion this piola delivers information to the boards and the computers take out this signal from Ally, but they are very scarce cases, dismantle the board and check that is well connected.

I did what you told me Kikemec, but you know that when it marks about 60 klm I think I'm going more kilometers than the velocimetro marks, what can I do to calibrate it?
Thanks for your information.

Try another automation to get out of doubt tell a friend who drives 60 kilometers next to you or in front and you have the same with your vehicle you pass it to the sconies if the score is wrong, in the moyoria they are not calibrable since this does it as with a kind of prestressed spring and that does not calibrate. But try to get it and see it Kisas is just a little detail. haaaaaaaaaa the other czech the piola the same that reaches the board but at its other end the one that reaches the box. Able to be the other tip the problem.

I'm going to do what you tell me a very good idea that, when I have news I tell you ...