egturbo1

i just got this car the way it is.. and its an ls vtec w/ turbo.. for some reason vtec doesnt activate.. can anyone help?

thanks

miller

uhh, were gonna need a little more info then that. what have you checked so far?

huepowered

check ur wires for the vtec
make sure you have enough oil
make sure your car warms up to the correct temperature

These are some basic things. I think there are a few more things the ECU checks before it allows VTEC to engage. Someone should be able to shed more light.

miller

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by huepowered &raquo;</TD></TR><TR><TD CLASS="quote">check ur wires for the vtec
make sure you have enough oil
make sure your car warms up to the correct temperature

These are some basic things. I think there are a few more things the ECU checks before it allows VTEC to engage. Someone should be able to shed more light.</TD></TR></TABLE>

this is why i asked what he has checked for, cause there are alot of things to go over.

just like you stated about the wires, do you have continuity to the ecu pinouts for your wires? The oil level will also determine if it will work, but in this case if your oil pressure sensor on the solenoid is activated you will get a CEL. Does you vss work? Have you checked the screen on the backside of the solenoid itself to see if anything is blocking the oil passage? Have you manually activated the solenoid to make sure it works correctly? Has the head/engine been apart recently?

hotimportcrx

AHHHHH ....What size vtec line did you use??? SInce you have a turbo feed..and If you used a larger external vtec oil line then you were suppose to ...then you will lose pressure and vtec wont work. What size oil line are you using?

blackeg

was the o-ring installed under the #3 cam cap?

hotimportcrx

or do you have all the bolts in the rails under the valve cover that can be the problem to.

egturbo1

ok lets see we've checked

vtec wires
changed out solenoid to a different one.
tuner used a switch vtec still didnt pop.
checked for dow pins their there.
the vtec line looks pretty big ill take pics in a bit.
its a hondata ecu.

i let my friend use my ecu and his vtec pops

there was a check engine light code 22 but we fixed that vtec still doesnt pop..

what can it be?

kordenbrock motorsports

what year is the car?

egturbo1

1995 integra ls

p0gi

[QUOTE=hotimportcrx]AHHHHH ....What size vtec line did you use??? SInce you have a turbo feed..and If you used a larger external vtec oil line then you were suppose to ...then you will lose pressure and vtec wont work. What size oil line are you using?[/QUOTE

What do you consider oversized? I am having the same problem right now.

hotimportcrx

The right vtec external oil line is a -6AN...also what size turbo feed line are you using?

kordenbrock motorsports

is the chasis wired for vtec? i know all 1992 civics were wired for vtec (as in wired to the ecu) but only si and ex's were from 93-95. i dont know if this apply's to the tegs...

brett

egturbo1

its an ls chasis

kordenbrock motorsports

i know, i was simply stating a point that your chasis may not be wired for vtec/not link from the solenoid to the ecu.

brett