duefuss

ok iv never seen this before but the spot where the Vtec pressure sensor should go is capped off i know i can get another solinoid i have two layin around, but am just curious as to how it works, im guessing it runs off blocks oil pressure sensor and the JDM ecu reads it from there but someone who knows let me know how it works?

97_coupe

I just ordered a JDM B16 SiR II swap from hmotorsonline.com and I noticed this as well when I got it so I called them up and I guess all 95 and up models didn't use a vtec pressure sensor, as long as you are running the right ECU for that B16, you wont have a problem because it doesn't look for the sensor. Not really sure if it reads off block pressure or not but as long as it kicks in then

duefuss

that sounds right this motor has (im guessin) 30,000 miles on it due to the fact that it still had hone scratches in the cylinder walls. but im running a USDM ecu, its a p75 chipped for vtec but i should beable by pass the oil pressure when i reburn my map. but thanks

97_coupe

if for whatever reason the new map doesnt work properly you can always try the bypass trick

https://honda-tech.com/zero...93528

raidacaipo

as long as your using a jdm ecu.. then it wont look for the pressure switch. if your using a usdm ecu with a jdm motor then you can either 1: use the vtec oil pressure switch from another usdm vtec motor or 2: http://www.phearable.net/tech/...s.gif

duefuss

yeah im goin to see if i can get rid of it when i remap thanks guys

EJ8chu

iTrader: (2)

No JDM motors have Vtec pressure switches as far as i know

97_coupe

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ8chu &raquo;</TD></TR><TR><TD CLASS="quote">No JDM motors have Vtec pressure switches as far as i know</TD></TR></TABLE>

When I called Hmotorsonline, they told me that they did but for whatever reason Honda decided to discontinue them starting with 95 and up. But he couldn't tell me why they did.

VtecSyndrome

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ8chu &raquo;</TD></TR><TR><TD CLASS="quote">No JDM motors have Vtec pressure switches as far as i know</TD></TR></TABLE>

My '90 jdm B16 and my '93 jdm B16 both came with pressure sensors so you just learned something new


As far as they pressure sensor question goes:

I bet that since the years are a little off from Japan to here depending on what and where you see/read (like the 'EF CRX being called a '92 in adds and such..I've seen it alot) then that would possibly explain why '95 is the year change for no more pressure sensors being that it was the "pre" OBD2 year for all Hondas. it's very common for the last year model of a car to have some "pre" features of the next model to come. The same reason you'll see alot of 94-95 cars with OBD 2 connectors even though the car was still obd 1

..Sorry if I made this sound confusing





Modified by VtecSyndrome at 8:06 PM 9/28/2008

duefuss

no it makes sense, same reason only select few 95 ex's come with rear disc

EJ8chu

iTrader: (2)

Eh not really......
Rear disc=Better braking performance
vtec pressure switch=??????

I guess it was just a sensor they felt they didn't need any longer. It was probably more of a dummy sensor to help the people who cant check their oil

egsleepercivic

I think the pressure switch was removed with obd2, my obd1 b16a from hmo had the pressure switch

egsleepercivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by duefuss &raquo;</TD></TR><TR><TD CLASS="quote">no it makes sense, same reason only select few 95 ex's come with rear disc</TD></TR></TABLE>
I thonk you only got rear disk on the ex's if you had abs, non abs models had rear drums

B18C5-EH2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egsleepercivic &raquo;</TD></TR><TR><TD CLASS="quote">
I thonk you only got rear disk on the ex's if you had abs, non abs models had rear drums </TD></TR></TABLE>



True.

Yeah someone on the assembly line was like

"Hey we've got all these rear disc set-ups let's just toss them on random cars until we use the rest of them..."

lol...

duefuss

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ8chu &raquo;</TD></TR><TR><TD CLASS="quote">Eh not really......
Rear disc=Better braking performance
vtec pressure switch=??????

I guess it was just a sensor they felt they didn't need any longer. It was probably more of a dummy sensor to help the people who cant check their oil</TD></TR></TABLE>

the bake comment was in refrence to:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSyndrome &raquo;</TD></TR><TR><TD CLASS="quote">

My '90 jdm B16 and my '93 jdm B16 both came with pressure sensors so you just learned something new


As far as they pressure sensor question goes:

I bet that since the years are a little off from Japan to here depending on what and where you see/read (like the 'EF CRX being called a '92 in adds and such..I've seen it alot) then that would possibly explain why '95 is the year change for no more pressure sensors being that it was the "pre" OBD2 year for all Hondas. it's very common for the last year model of a car to have some "pre" features of the next model to come. The same reason you'll see alot of 94-95 cars with OBD 2 connectors even though the car was still obd 1

..Sorry if I made this sound confusing

Modified by VtecSyndrome at 8:06 PM 9/28/2008</TD></TR></TABLE>