I have a 92 hatch that was non vtec i put in a d15b JDM motor it is running really good but i dont think vtec is working i am also throwing a check engine light on i found out what the code was and it was code 21 vtec spool selanoid will that make vtec not work and also how would i test the selanoid to see if its bad i all ready hook up +and- to the whole vtec unit to see if it clicks and it does what else should i do??

 

Is This A Help Fourm Cause Everytime I Have A Prolbem I Never Get Help Wtf!!!!!!!

 

well what ecu you using and they come obd1 so it plugs in. and you ran ur wires for the oil and vtec solenoid. there is only one wire for vtec solenoid.

 

I am using a p28 ecu the vtec selanoid has one wire that i ran to a4 than i ran the ground for the pressure switch and the other wire for the pressure switch to d6 that did not work at all so than i found something different on the comp it said to tie both of the wires that go to ecu and put them as one in a4 and than ground out d6 when i tried that the check engine light went off and vtec was def working for the frist time about 15mins later the light came back on and no more vtec

 

sounds like there is a problem with a solenoid then . it might be ok but then might not be. good luck its super hard to diagnose without being with the car ya know.

 

yea i guess it is possible that the selanoid is bad, i have been reading a whole bunch of different ways to wire vtec up i thought that there was only one way to do the job so now i am not even sure what way to go with, it just might be something stupit like wrong wiring