Which VTEC solenoid is installed in my Type-S? It does not have and oil pressure swich like my old 98 H22A4 had:

USDM H22A4


JDM Type-S H22A

They both look identical minus the oil switch valve pointed above. In the JDM valve it looks like the location where this oil switch goes is plugged with a bolt. So if i were to buy a regular VTEC valve and remove this switch and cap it off, would it basically be the same? I cant find a VTEC solenoid anywhere on slhondaparts.com that matches the one i have, mine is not broken but it would be nice too know which one i have to order in the future.

I do not know if all JDM H22s are like this as i have never seen another JDM H22 besideds my Type-S. Anyone care to share?

 

Come on people,. go to your garage and look at you JDM H22 if you have one and tell me if your VTEC solenoid valve has an oil switch sensor.

 

interesting, maybe it was just bypassed?

 

well, from seeing a few jdm b-series engines, they do not use the oil pressure switch. whereas we do. another sidenote: if your ecu is usdm, you'll need a usdm oil pressure switch (the us ecu will look for a oil psi switch). whereas the jdm ecu will not look for the switch (and therefore can be unplugged/blocked off). If you have a p72 ecu (for example) chipped, you can specifiy what options you want (vtec pressure switch, knock, etc...)--but that's another topic. hth.
-l8r

 

Well im currently using the JDM ecu which explains not having cels. So do regular JDM H22s use this switch or not? This switch alone is $50 and the entire solenoid is $240. I figured the one i have that does not have the switch would be cheaper. I would hate to have to purchase one that has the switch only to not use it and pay the money for it.

 

I think that's an obd2 thing, my obd1 jdm h22 has a pressure switch.

 

afaik obd2 jdm engines do not use the vtec pressure switch.

 

my odb1 has a pressure switch.

 

my obd1 jdm h22a has one

 

My obd1 JDM H22 has one. That's wierd. Never seen that. I suppose that the ECU would support the functionality without it. If you ran something else...doubt it would hit vtec.

 

iirc on obd2 it gets the pressure reading from the op switch?

 

The Type-S motor seems more OBD1 to me seeing how it has an internal ignition coil and the CKP sensor is not located by the oil pump. But yet other JDM OBD1 H22s have the oil switch on the VTEC solenoid. Hmmm, im gonna see if i can find some other plug on the Type-S that was not on my H22A4.

 

if its that big a deal just put the switch on the new solenoid!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">if its that big a deal just put the switch on the new solenoid!</TD></TR></TABLE>

No, that wouldnt work because there is no connection from the Type-S engine harness. I do not need that switch. And thats not the issue, i have yet to find a VTEC solenoid for sale that does not have that switch. So far im hearing all other JDM H22s have it but the Type-S doesnt. So it either gets the oil pressure reading from somewhere else or it just doesnt need it.

 

my odb1 jdm h22 has a switch

 

i dont know about h22's, but from experience, some of the d-series motors from japan do not have the oil pressure switch. make sure you use the JDM ECU, cuz it will not look for oil pressure to engage VTEC. If you use the USDM ECU you will need to change the solenoid to teh USDM one.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SteveoBA8 &raquo;</TD></TR><TR><TD CLASS="quote">I think that's an obd2 thing, my obd1 jdm h22 has a pressure switch.</TD></TR></TABLE>

does japan have OBD2 motors?

 

looks like I could eat off your type-s motor.

 

One thing to note is when the car is cold it will not engage into VTEC, very much like my old US H22A4 motor. Doesnt the ECU hold off VTEC engagement until sufficient oil pressure is built? Isnt the oil pressure switch on the VTEC solenoid what sends the signal to the ECU? If so, the Type-S is getting the reading from somewhere else.