moharebusa

Hi Every one,
I got the 1996 m edition with 98k, Tachometer was not working, but the car runs perfect, I changed the Plug wires, oil, and the tachometer. but again with the new tachometer nothing happened the tach did not work, it is always in 0 and when i turn the car on goes to 2000 and stop then go back to 0 when off. Finally I changed the ignition coil, with the new ignition coil the tachometer jumped and worked normally for 5 miunets then went dead again but the whole engine was shaking and the muffle sound is different now and ideal is very bad feel like you r runing in two cylenders..again no check engine light and no tachometer !!!! please help....