I have a 94 cx with a gsr swap and Since I installed a skunk manifold I have had vtec problems. Its weird when I start the car it wont throw a code until it gets to running temp and I hit the rpm to activate vtec. I straight wired both sensors to the ecu and it still does it. I had a d16z6 in it for 5 years and never had a problem with it. I also had the gsr swap in it for almost 6 months with no problem. Any help would be greatly appreciated!

 

Code 21: VTEC spool solenoid valve

Looks like you have a problem with your VTEC spool solenoid valve...

 

yea, I rewired that and It is still doing it. It will work for the first tie I hit vtec and then the check eng. lights come on and it doesnt work again.

 

Modified by pootsiracer at 10:48 AM 1/20/2005

 

thats definitely wrong what that dude just said.

If your car is not up to temp and you hit your vtec engagement point nothing will happen, your car just wont pull hard.

Double and triple check your wiring. Take the solenoid out and test it on your battery, you should hear a click when it gets 12 volts.

If your vtec oil pressure sensor isint working it could cause this.

If you speed sensor isnt working it could cause this.

If the solenoid is bad it could cause this.

 

would that make since cus it will hit vtec once then it will kick thecheck eng. light on and thats when it stops working?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ebrakeracin4 &raquo;</TD></TR><TR><TD CLASS="quote">would that make since cus it will hit vtec once then it will kick thecheck eng. light on and thats when it stops working?</TD></TR></TABLE>

low oil pressure

do you have oil in your engine? lol seriously

your vtec has nothing to do with your intake mani btw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yaya &raquo;</TD></TR><TR><TD CLASS="quote">

low oil pressure

do you have oil in your engine? lol seriously</TD></TR></TABLE> yea, thats the 1st thing I checked.

 

Checked all of the sensors...replaces coolant temp sensor and vtec still doesn't work...The solenoid is working...anyone else have any clue what could be causing vtec to not work

 

Someone help me out here...there are some F-body guys that need to be put in their place

 

bumo

 

ok, I jumped the vtec solenoid and it clicked so I know it works. I repleced the cts and still the same thing. I reset the ecu, car warms up, I hit vtec once and then the light pops on and then no vtec. throws a code 21.

 

help!!!!!!!!!

 

i had a similar problem when the ground on my vtec selinoid was coming loose, check your ground...

 

ground is connected good...and still nothing...?? Vtec works once but then check engine light comes on and vtec stops working

 

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