hondaz6ex

my brother has a 1995 honda civic dx and we just put in a sohc zc vtec...i wired up the vtec or i thought the check engine light comes on whenever you get on it but not intil the end of second gear. we are running a d16z6 engine harness on it and a p28 ecu....i ran the two vtec wires but i was told that i need to ground it to, but if i am running the z6 harness isnt it already grounded? i could use any help i can get

ci_v_ic

i cant help you but heres a free bump on the way to gettin it fixed.

tempsohc

the one wire coming from the vtec solenoid goes directly to the ecu...one of the wires on the oil pressure switch you have to manually ground and the other goes straight to the ecu aswell

Miracle

I thought the ZC wasnt a VTEC motor?

ci_v_ic

i believe some of the sohc's are. correct??

Jhonny Ricer

Its not.....

Miracle

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jhonny Ricer &raquo;</TD></TR><TR><TD CLASS="quote">Its not..... </TD></TR></TABLE>

I didnt think so.

ci_v_ic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Red_EM2 &raquo;</TD></TR><TR><TD CLASS="quote">I didnt think so.</TD></TR></TABLE>

o ok my bad n/m i was thinkin of a d15b.

my bad

Miracle

Yeah because I was thinking, didn't VTEC technology make the ZC obselete?

I knew something was amiss. Im still new for Honda, so Im not certain on specific older things like that, but I think Im coming around nicely.

Jhonny Ricer

Sorry for the inconvenience

hondaz6ex

i have pics of the motor if anyone would like to see it a sohc zc vtec the engine stamp reads ZC....so i have to take one of the wires on the pressure switch and ground it ?

hondaz6ex

if the ground wasnt connect would that cause vtec not to kick in at all or just sometimes?

ci_v_ic

it wouldnt kick in at all if it aint grounded at all.

if its a bad ground then it would kick in off and on.

Jhonny Ricer

Sounds like you are running low on VTEC juice!!

ci_v_ic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jhonny Ricer &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like you are running low on VTEC juice!!</TD></TR></TABLE>

haha

ci_v_ic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jhonny Ricer &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like you are running low on VTEC juice!!</TD></TR></TABLE>

suspendedHatch

Why are people so stupid? There's a buttload of ZC motors, not just the DOHC. If you don't know what the expletive you're talking about, shut the expletive up! M'kay?

All of the following motors have "ZC" on the engine block.

DOHC non vtec
SOHC non vtec OBD0
SOHC vtec OBD1 &lt;---- he has this one
SOHC 3 stage vtec OBD2

The VTEC solenoid that came on your ZC motor doesn't have the vtec oil pressure switch. This switch comes on USDM VTEC motors and is there to prevent you from going into VTEC if your oil pressure is low. It's not necessary.

Your P28 has a VTEC output and a VTEC oil pressure input. So what you can do is to connect both wires to the VTEC output. The VTEC output grounds when your engine goes into VTEC, thus providing a ground for your VTEC input.

As for the actual pins, you'll have to search or send me $$$ and I'll take a pic of my ECU.

probenator

no ground means no work......ground it and make sure u have plenty of oil......no oil no vtec.....

hondaz6ex

i grounded the black wire and it still doesnt work right.

hondaz6ex

do you think if i put a vtec solenoid off a z6 onto the zc motor will that keep it from throwing the check engine light?

dubzxallxstar

i have the zc vtec it has the blk valve cover.... does anyone knows how much power or torque it has....