My son just bought a 93 bonne, the car will run for a few min then cut off. When it does this the tac and speedometer go haywire. the speedometer will read 50mph with the car parked. there is a relay on the fire wall that buzzes when it happens. this relay has blue,tan,brown/white,red,black wires it is the 3rd on from the left. I cannot find a list of these relays anywhere. Anyone know what this relay goes to. Tonite I pulled the error codes and got an error 26 Quad-Driver " A " Fault. I cannot find what the A means. Anybody have any ideas where I should start looking.