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View Full Version : vtec works just not all the time help...

LaNRoVeR
11-10-2003, 01:13 AM
What could be causing my vtec to not hit sometimes?
nonovurbizniz
11-10-2003, 12:25 PM
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...
cashizslick
11-11-2003, 10:25 AM
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.
thermal
11-11-2003, 10:55 AM
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.......
cashizslick
11-11-2003, 11:45 AM
Originally posted by thermalfi'd16
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.
pdiggitydogg
11-11-2003, 12:15 PM
nah its clear when it kicks on stock...maybe I just know what to listen/feel for though
thermal
11-11-2003, 01:34 PM
....so do I, I would even wait for my VAFC to get the signal and display VTi/VTo "on". I dont feel anything significant.....
LaNRoVeR
11-11-2003, 07:20 PM
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...
LaNRoVeR
11-11-2003, 07:25 PM
Does anyone haev a pic of the vtech solinoid...
pdiggitydogg
11-11-2003, 08:14 PM
z6 vtec solenoid...out of car
http://www.imagestation.com/picture/sraid87/p609fc5904c96f38c3546d43b6b7fa82a/fa9724b7.jpg
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
http://www.eliteonweb.com/reltweb/35lmceltsec/vtech-9118_crdlss-phne.gif
vtech are phones
http://www.yomiuri.co.jp/atcars/interview/img/euro-r_vtec.jpg
honda is vtec
sohc_vtec 2NR
11-11-2003, 08:33 PM
haha! i just bought a vtech phone...20 bucks! :yes:
pdiggitydogg
11-11-2003, 09:40 PM
I like their phones...mine was 20 too
nonovurbizniz
11-11-2003, 10:10 PM
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.