My roommate has a 93 accord and its acting really weird. First of all the fuel pump went bad, so we changed that. Next the main relay went bad....resoldered and fixed it. now the car sputters lags and runs like shit 9/10 times. when we first start to drive it runs smooth, after about 5 min of driving it starts to sputter and d4 starts blinking. jumped thewires and got code 2, I looked up code 2 and it says "short or open lock up controll solenoid valve b" so dose that mean its a bad solenoid?