Jake92eg

I hope someone can give me a hint to whats the problem.

Just installed a jdm b16a and vtec wont fire. Yes it has a p30 and good oil pressure. I put a 12v lamp and connected it to my vtec green wire and the light doesnt come on when vtec shoud fire, so the ecu must not be sending the signal. Tach works but acted kinda funny when i 1st started the motor but seems to work fine now. The check engine light is on but that could be due to the swap and or changing the cluster out from the cx to an ex. maybe somthing to do with that??...
what else can i look for and try?

Let me know! Thanks guys!!

ShortyzKustomz

My car was doing the same thing when it was swapped from DX to a D16Z6... I ran new wires from my new chipped ecu and it worked fine, Might just be your harness

numberone

iTrader: (2)

Nothing to do with the cluster. Is your knock sensor hooked up? What code are you getting? What harness are you using? You need an ex wire harness because of the 4 wire O2 sensor.

Jake92eg

Im using an ex harness...at least thats what the guy told me when i bought the car...i still need to run the codes and see what codes are thorwing....i shoud check the O2 sensor

jonezen1

if you dony have the knock sensor hooked up v tech wont kick in. the ex harness doesnt have one so just wire the knock sensor straight into the ecu. I did that and kicks just fine!

crazyguy

it happend to me before..as turned out .knock sensor error..so i switched it with a chipped p28 ecu..and it pops and pulls hard now. i dont really like jdm p30 ecu..

Jake92eg

so since it has a p30 ecu all i gotta do is put in a p28 cuz of the knock sensor?..

devney

Keep your p30. Btw I have a jdm b16 and I did NOT hook up a knock sensor yet and it's been 3 months. Of course I'm throwing a code for the knock sensor but my vtec works FINE. It crosses over fine and is loud. You need to check your codes before anybody can help you though. It's hard for anyone to tell you what the problem could be when you have codes that nobody knows.

Jake92eg

k, ill go check tghe codes right now...just wanted to finish watchin the seahawks.. ill post what i come up with! thanks

Jake92eg

Hey guys, i went and pulled the codes. Here's what i came up with.

3, manifold absolute pressure(map sensor)

14, electronic air control(Eacv)

21, spool solenoid valve

22, valve timing oil pressure


Thoes were the codes i got. Anyone know?...

Jake92eg

found the knock sensor broke off and not connected.....some people says thats it and some people say they can run without a knock sensor and vtec hits...im gonna replace it and see if that cures the problem.

if you have anymore ideas let me know!! thanks guys!

devney

when my map sensor wasn't connected my vtec wasn't engaging...knock sensor shouldn't affect it.

hondaman1320

Knock sensor won't affect vtec, but you will get a cel for it

Ex-Eg-Driver

iTrader: (1)

clean your vtec solenoid...replace the screen and gasket in there too...might be clogged or ripped.

numberone

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaman1320 &raquo;</TD></TR><TR><TD CLASS="quote">Knock sensor won't affect vtec, but you will get a cel for it</TD></TR></TABLE>Incorrect. Research.

hondaman1320

Ok, my car must be one in a million, no knock sensor, vtec worked all day, just got a cel for it, keep in mind this must only be true on my car

HondamanXxX

Do you have a Vtech oil pressure switch? What wiring harness are you using. I know the JDM motors didnt come with them and if your using a USMD ecu it will not work. Just my $.02. I had vtec problems with my JDM GSR swap.


Modified by HondamanXxX at 3:47 PM 9/17/2007

philosofy1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaman1320 &raquo;</TD></TR><TR><TD CLASS="quote">Ok, my car must be one in a million, no knock sensor, vtec worked all day, just got a cel for it, keep in mind this must only be true on my car </TD></TR></TABLE>

what type of ecu are you using? a knock code on my p30 will disable my vtec.
my friends vtec works fine with no knock (chipped p28). weird?

HondamanXxX

Dude you need to change your name. It's to much like mine. lol jk

philosofy1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondamanXxX &raquo;</TD></TR><TR><TD CLASS="quote">Do you have a Vtech oil pressure sensor? What wiring harness are you using. I know the JDM motors didnt come with them and if your using a USMD ecu it will not work. Just my $.02. I had vtec problems with my JDM GSR swap.</TD></TR></TABLE>

vtec oil pressure sensor?
you mean vtec oil pressure switch?

jdm and usdm motors are the same, there is nothing missing.

hondaman1320

I have jdm sir-2 swap, p30 ecu, usdm gsr wiring harness... in a 94 del Slow

HondamanXxX

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philosofy1 &raquo;</TD></TR><TR><TD CLASS="quote">

vtec oil pressure sensor?
you mean vtec oil pressure switch?

jdm and usdm motors are the same, there is nothing missing.</TD></TR></TABLE>

Correct! Thanks?

JDM and USDM motors are the same? I don't think ALL of them are the same. Maybe he's missing his. https://honda-tech.com/zerothread?id=2080100

This is a photo of mine missing.

I just know that if it is missing you need to connect two wires in the ECU for Vtec to engage. Not saying this is his problem but he should check it out to see if he has something there to be certain.




Heres a link to the ECU wiring to help you get around this missing switch for those who don't have it. https://honda-tech.com/zerothread?id=2078342

Jake92eg

K i put in a new knock sensor and still wont fire. Map sensor looks to be connected. iv cleaned out my vtec sloenoid, no build up. Yes, it has a vtec oil presser switch and i was told it was a ex harness, looks to be hooked up. there is a four wire o2 and its hooked up....could it be my jdm p30 ecu?...

instrument

have you resolved are you cel's?
for some reason that would be my first concern.

Jake92eg

this is probably dumb, but whats cel's?