have a 95 sohc vtec and the vtec hasnt been working.. oil level is fine.. connections look okay.. cel comes on sometimes at high rpm or even at high mph.. i plugged in a different ecu just to see if that was the problem but still no vtec.. last thig i did was make a LED vtec indicator light to let me know if/when vtec is activating.. ideas any1??

 

try removing your vtec solenoid and cleaning it out.

check the wire at d6 pinout to the vtec pressure sensor with a digital multimeter to ensure there is a secure connection as well.

good luck.