just bought a 1990 teg vith the b16a motor automatic.now this is how it started;i was told before i bought the car that it had a vtec controller stock from factory now i'm new to honda well i always loved hondas but this is my first, anyway when i got the car i looked for this controller but was kinda expectin to c a screen with button, anyway i was driving one day when i noticed a green light with a knob above it and it would come off every time the rpm would fall below 2500 so then i started playing with this knob realising that this might be the controller ,(i reconed that becousr the car would gain and loose power according to where i sset it) any way one night i reallised the light was always on ,for that whole knight i was driving it didnot come off untill the next day when i drove it the light never came back on again up to this day it still doesnt work so any help or advise would be appriciated