no vtec engagment
b16sir2 w/ obd2 conversion using the si (p2t) ecu in a 2000 ej8.
The other morning on my way to work the same thing happened.
I stopped at the rest stop, unplugged a few different connections n cleaned them, checked the oil level. Then reset the ecu. When i got back on the parkway vtec crossed over. Would resetting the ecu cause the problem to temp be solved, as if it was a cel n the car would have to be driven X amount of miles for it to go back on....
I do have a cel on, originally for n o2 sensor, but i guess i gotta run a diag to see if there is another code up now...
Any suggestions fellas?

 

What kind of oil are you running? (thickness)
I would say clean your vtec selenoid screen. It's a metal screen (filter) that's inside the selenoid. It could be clogged or just dirty. Check it out.

 

mobile 1 10w30... i cleaned the screen a few months ago when i did the cam seal, how often do u have to clean it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ8VTEC &raquo;</TD></TR><TR><TD CLASS="quote">mobile 1 10w30... i cleaned the screen a few months ago when i did the cam seal, how often do u have to clean it?</TD></TR></TABLE>

I don't really know if it's even a recommended "serviceable" part, but it does help on some cases. I guess try searching because this happens often.

 

did you check your oil level? maybe you have a short in the vtec wire?

 

oil level is fine.. anyother suggestions?

 

BUMP

 

Attach a 12v test light to your vtec signal wire to see if it's something that's stopping it before it engages or if the signal is sent and it's mechanically not running.

And props for central NJ,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SVOboy &raquo;</TD></TR><TR><TD CLASS="quote">Attach a 12v test light to your vtec signal wire to see if it's something that's stopping it before it engages or if the signal is sent and it's mechanically not running.

And props for central NJ, </TD></TR></TABLE>

lol.. sounds good

I was thinking it might be the vss since my speedo jumps occasionally.. i guess if i test it w/ a 12v light i will kno that its not getting the sig n it could possibly be from a bad vss..

can anyone verify that a bad vss could cause vtec to not engage?

 

bump, will a bad vss cause vtec to not engage?

 

bizzumpp

 

Bad vss = no vtec. Vtec is speed sensitive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SVOboy &raquo;</TD></TR><TR><TD CLASS="quote">Bad vss = no vtec. Vtec is speed sensitive.</TD></TR></TABLE>

but the speedo isnt alwasy jumpy, just sometimes..

so thats most likely the prob huh?
i will def be relieved if it turnes out to be that..

 

Sounds like the problem, I have one that the case portion broke on if you wanna test with it, I dunno if it works though,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SVOboy &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like the problem, I have one that the case portion broke on if you wanna test with it, I dunno if it works though, </TD></TR></TABLE>

if thats cool wit u, i wouldnt mind tryin it out so i atleast i kno thats the problem..
believe it or not, i dont kno anyone w/ a b16 so i can atleast try some stuff out

 

Oh ****, b16, I forgot, this is a d series vss, I don't think it'll fit, I dunno though.