Hey i have a 94 honda civic with a jdm d15b vtec. i was wandering if there is anyway to check to see if vtec works through the wireing and if yes and u tell me how. thank u

 

Wire up a 12v light to the wire coming from the ecu that controls the vtec solenoid and if it comes on at 5500 or where vtec is set the ecu is activating it. Feeling vtec on a d series is hard (I've never been able too).

Also, which ecu are you using?

 

stock p28 and we could tell when it kicked cuz it always spun and it threw u back into the seat! but now for some reason its not workin at all

 

could u explain more about the light?

 

Check the vtec solenoid to see if the screen is clogged, do the light thing, check oil levels/pressure, coolant temp, and speed sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ezeiset &raquo;</TD></TR><TR><TD CLASS="quote">could u explain more about the light?</TD></TR></TABLE>

You splice the light into the wire coming from the ecu and going to the vtec solenoid, if the ecu is activating vtec it will light up.

 

vtec relies on oil pressure in order to work. If you do not have enough oil, vtec will no engage. It wont engage if the engine is cold. Sounds silly but just make sure those are ok first.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by deadend9009 &raquo;</TD></TR><TR><TD CLASS="quote">vtec relies on oil pressure in order to work. If you do not have enough oil, vtec will no engage. It wont engage if the engine is cold. Sounds silly but just make sure those are ok first.</TD></TR></TABLE>

not just on oil pressure my friend

 

Ok i also swapped out the d15 harness with a d16. and well there is this sensor on top of the tranny. its kinda round. dont know what it is. it had a plug that plugged right into the harness. and well the 1.6 harness didnt have that so i cut the wires. what sensor is that?it only had to wires