I just put a 30K mile ZC V tech motor in my wifes 91' civic EX. I got the ApexI V-tech controller dialed and it runs great for about 30 minutes and then I get the oil light coming on and it starts running rough and no V-tech? I am going to check my pressure sensor wires tonight cause I think the wires are stretched kind of tight but it has plenty of oil and tuned and running well? I am stumped if it is not that sensor Any ideas? Please nobody say OIL PUMP!!!!

 

the sensor on the head or the back of the block. if its the vtec oil pressure switch on the head, very possible. the one on the block is mainly there for the light