when i drive my 92 it will rev out to 3 grand and shift super hard the rpm guage dosent work and the od off button flashes but when i put my foot back in it the tach works and the light goes off it happens randomly but when its not doin that it shifts and drives fine im almost positive its not the trans i think it maybe a sensor of some sort the old man i bought it from said it did this b4 and it had to do with the throtle some how he couldnt give me anymore info