I'm putting a d16y8 head on my d15 in my 91 civic. I have a p28 for it and i am wondering if I can bypass the vtec pressure switch on it with out setting a code like the guys with the jdm b18's do.
Has anyone done this on a D series vtec motor? My pressure switch on my solenoid is broken and I can't track one down for cheap, so anyone know for sure??
thanks for any help.

 

If the switch is broken, you can't bypass it. Buy a new one and wire it in right.

 

i think you miss understood me. Guys that buy the JDM B18's and b16's don't have a Vtec Pressure Sensor because from the factory they don't have one, but with a USDM ECU (which looks for that pressure signal) you have to bypass the sensor.

I am wondering, since my sensor is broken and I don't want to spend 40 bucks on a new sensor, can I bypass it like others do with the B motors. Can anyone verify this for me???

 

You misunderstood me. If the sensor is broken you can't bypass it. That'd be like a heart bypass on someone who just died.

 

What I mean by bypass is you don't hook up a wire at all to the sensor because it is broken and you just fool the ECU. Guys with the JDM b series motors don't have a Pressure switch at all, but the USDM ECU will look for the sensor, so you have to bypass it since it isn't there. I want to do the same thing with mine so I don't have to spend more money. Get what I'm saying now?

 

And they bypass it by getting a USDM solenoid with a pressure switch.

$75 max for a good used one. Quit being cheap.

 

Well then if you've got money to spend you buy it for me. I'd like my kid to eat.

https://honda-tech.com/zerothread/1693528

Read this thread and then you'll know...


Has anyone done this on a D series motor???


Modified by Ahknodd at 3:47 PM 10/10/2007

 

Wiring doesn't care if the engine stamp says B or D.

Buy your grocerys and drive around without VTEC until you have enough for a solenoid. Won't kill you not having an extra 20hp to get your child to school will it?

 

Just do it. The worse that will happen is, it won't work...and you might get a code...which is pretty much where you're at now. You got nothing to loose.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ahknodd &raquo;</TD></TR><TR><TD CLASS="quote">Well then if you've got money to spend you buy it for me. I'd like my kid to eat.</TD></TR></TABLE>

I respect someone who puts their kid before themselves, but if $75 is too much to fix a problem, you're in the wrong game. You might as well do it right or not do it at all.

 

I'm really failing to see how doing this "fix" falls under the "do it right or not at all" category.

Would you say that people that do the CKF bypass mod when using an OBD1 engine fall under the same category?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aquafina &raquo;</TD></TR><TR><TD CLASS="quote">Wiring doesn't care if the engine stamp says B or D.

Buy your grocerys and drive around without VTEC until you have enough for a solenoid. Won't kill you not having an extra 20hp to get your child to school will it?</TD></TR></TABLE>
Dude you're a dick and should leave this site.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blk00EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">

I respect someone who puts their kid before themselves, but if $75 is too much to fix a problem, you're in the wrong game. You might as well do it right or not do it at all.</TD></TR></TABLE>
I thank you for not being a dick, but the reason I'm asking is because I haven't put the head on and I keep reading about the JDM guys doing this since there is no place to put the sensor (and they don't use a USDM solenoid Aquafina, read the thread I posted). I am just gathering info before I do this. I would just try it, but it's not in my car yet. I'm just having problems finding a sensor for sale and also the plug to hook up the sensor.

Thanks to everyone for the positive support and trying to help.

 

I'll leave when you contribute more tech than me.

Read better.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aquafina &raquo;</TD></TR><TR><TD CLASS="quote">Wiring doesn't care if the engine stamp says B or D.</TD></TR></TABLE>

That means, yes, you can bypass it by looping the ECU terminals together.

Is the switch physically broken? If so, just buy one when you can then put the head on. If not, just forget the plug and run it wire to wire.

The switch is there for a reason.

 

Just because you contribute more than someone else doesn't mean you can be rude. There's no place for that crap anywhere in our community.
I'm just looking for help and trying to get strait answers, but all you can contribute is sarcasm, which how is that supposed to help?

Just stop being rude, and if you can't constructively help someone out then don't post.

I've got my answers from others, so I'm done with this thread.
Thanks to all who tried to help, and especially to those who did help out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">I'm really failing to see how doing this "fix" falls under the "do it right or not at all" category.

Would you say that people that do the CKF bypass mod when using an OBD1 engine fall under the same category?</TD></TR></TABLE>

No, I wouldn't. That fix is made so the motor doesn't run like garbage, whereas the oil pressure switch bypass is to enable VTEC to engage, a luxury, if you will. In this case, if the money is too much, just don't fix it and deal with the lack of some upper end power. The right answer was provided and if the op doesn't want to heed the advice in which he requested, I don't see the reason why he should hack away at a band-aid fix.

Nonetheless, good luck. Personally, I avoided the sensor accommodations and wiring tricks by simply using the JDM ECU that came with my swap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blk00EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">Personally, I avoided the sensor accommodations and wiring tricks by simply using the JDM ECU that came with my swap.</TD></TR></TABLE>

Well that's rich. It's perfectly fine if your motor didn't have a pressure switch to begin with (or you have an ECU that never looked for it), but add one to the mix and now it becomes something that "needs" to be fixed, should it ever break.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blk00EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">...I don't see the reason why he should hack away at a band-aid fix.</TD></TR></TABLE>

You're hacking away at the harness for the CKF fix too - in fact, you're adding 1 more wire for the CKF fix than you are for the PS fix. How about people just get the oil pump, CKF sensor and wire it in instead of hacking the harness for this band-aid fix? That would be considered "doing it right".

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blk00EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">Nonetheless, good luck.</TD></TR></TABLE>

Hey, we agree on something.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">You're hacking away at the harness for the CKF fix too - in fact, you're adding 1 more wire for the CKF fix than you are for the PS fix. How about people just get the oil pump, CKF sensor and wire it in instead of hacking the harness for this band-aid fix? That would be considered "doing it right".</TD></TR></TABLE>

I do agree, in fact Not condoning it... I'm just saying that something like that is more crucial than improving the top of your powerband. If you have 1 car, a hack like that would help get you by, whereas now you're still getting by ok as-is. Although, to begin with, one should never do anything too drastic to one's only dd...