okay, so I swapped from H23 to JDM H22 and hooked everything up great it ran wonderful and VTEC was working. So i go for a drive today, and VTEC engages fine a few times, and about 30 min. later VTEC stops working. I figured i was low on oil, because i do have a small leak. Well i refilled oil. No VTEC. Checked Oil Pan for dents, None, still no VTEC. Checked wiring, all good. Still, no VTEC. Im not throwing any VTEC cel codes. I am throwing one code for IAT sensor, but VTEC worked before then. I dunno what it could be and i dont want to have to buy a new solenoid. By the way i did a search and read the FAQ's i just want some input.

 

well seems you got one way to follow, buy the sensor

 

there is a official thread. why want vtec engage and why isnt vtec working...search some more.

 

i knw there is an official thread, i have read it. I want some individual input regarding my certain situation. I am replacing the IAT sensor today, but the VTEC worked before even with the bad IAT sensor. So i'll keep this updated

 

clean the screen behind the solenoid.

 

i did clean the screen, it was really dirty. I got it spotless and re-installd the solenoid. Still no VTEC, so i took the solenoid wire and did the 12 volt test and it definitely works. Is it possible for the solenoid to be good, but the pressure sensor to be bad? I'm taking my ECU to a computer specialist to get it checked out. It can't be wiring either, i ran 2 different sets of wires to the ecu, and neither worked. Now im throwing cel 22 which is pressure switch i believe. Let me know if you guys can help, it's getting real old, real fast

 

lol i know the fustration...mgags fixed my ****...do you have a good ground and do you have it wired to the right pins at the ecu...its not a bad pressure switch..i highly doubt it..

 

yeah, well i double checked my wiring, and it had very bad connections at the ECU. I think initially the screen on the solenoid was too dirty, but after i cleaned it, since i had messed with the wires that was the problem, i'm going to fix up the wiring, and i'll be posting up later tonight

 

word

 

This sounds really whack. But I threw the VTEC Oil Pressure Switch cel too ( no vtec), I seafoamed, new plugs/oil/oil filter, and VTEC kicks so hard now its scary. Yet I still throw the code...I dunno lol...

 

Yeah that did it. Initially it was a dirty Pressure switch. Then when it stopped working, i figured it was the wiring, and tore into that. After i cleaned the switch, the wiring was messed up, i cleaned it up and it all works fine now.