vtec works just not all the time help...
 

What could be causing my vtec to not hit sometimes?

vtec checks for...

Vehicle speed
Rpm
engine temp
something else... I can't remember right now...

Chances are it's a proboblem with the vtec pressure switch... the vtec solinoid... or a wire somewhere...

Your best bet would be to follow the troubleshooting procedure out of a helms factory manual...

I think oil pressure has a lot to do with when VTEC engagues, maybe your oil pressure is too low.

You could also clean up the VTEC solonoid - if it is dirty, it might not work right.

What did you come up to a conclusion that your VTEC is only kicking in at times? As mentioned above, it takes some inputs to activate. If you are only going by the "feel" on a SOHC VTEC, it really is almost unrecognizable. Try driving a DOHC VTEC, that sh!t screams when it kicks in.......

True that.

The sohc only becomes noticable when you have an intake. I say to clean your solenoid and make sure all of your wires are connected properly.

nah its clear when it kicks on stock...maybe I just know what to listen/feel for though

....so do I, I would even wait for my VAFC to get the signal and display VTi/VTo "on". I dont feel anything significant.....

Dude, when you have an intake you don't have to go by the feel if vtec hits or not on a sohc you can hear it also...

Does anyone haev a pic of the vtech solinoid...

z6 vtec solenoid...out of car

borrowed..er...stolen pic

you can see it in your engine bay...its off to the left of the valve cover and just looks like a cap


oh...and I hate to do it to you man..but

vtech are phones

honda is vtec

haha! i just bought a vtech phone...20 bucks! :yes:

I like their phones...mine was 20 too

I can hear and feel vtec kick in on my sohc.

it's just more noticable in the dohc because the have vtec lobes for the exhaust too.