Hey guys so ive been searching and found a lot of v tec issues but not one quite like mine. My issue is that my v tec is not hitting as hard or at all, before when you get on it you really hear it cross over like day and night. Now it sounds like a regular motor that is reving high. Its a 2001 124xxx miles, the mods ive done are cai, comptrch exhaust, ividia tp with cell fix, and solid motor mounts. I did a valve adjustment and changed spark plugs with oem plugs. Cleaned v tec screen(even though it was clean) Did an oil change 5w30 mobil 1, before i used to use 10w30 but i read that 5w30 would help the head get oil when its cold but looking back i never had a problem with the 10w30so i may switch back. I have used my power probe to test the v tec solinoid and i can hear it click when i give it power, also i checked the resistance and its within spec. Also checked the resistance for the oil press sensor and its also in in spec. I read somewhere that billman said dirty airfilters could cause it so i cleaned my k and n and re oiled it , also did a map whack. The next thing on my list is check the oil pressure, hopefully its good because if its not the only thing i can think of would be oil pump...any advice would be great thanks!

 

Forgot to say checked oil level and its good, the car will rev 9k no problem just not feeling it crossover or really put back in my seat like it used to

 

vtec is all oil pressure related. If for some reason you have low oil pressure, be it from a failing pump or low oil by volume you won't get vtec.

 

yeah i just did the oil change not too long ago and the level is still good, so i know its not because of volume. any other guesses?anyone?

 

just to update i took out the oil pressure sensor connector and it was leaking oil through the actual sensor, i swapped it out and v tec is back!