No VTEC presure switch!

[Hostile]

Well I'm finishing up the prep work for the install and I notice I have no VTEC presure switch. My engines born date is Dec 95 so its ob1. How do I go about getting it to work couse I know VTEC won't work without it.

[GhostAccord]

You sure it's not an OBD2 F22B1? They never came with a pressure switch. IIRC they where manufactured in late 95....for sale in the 96 chassis, OBD2.

What ECU are you using?

If it is a stock OBD1 P0A you will have to find an OBD1 (94-95 chassis) VTEC pressure switch, remove the plug, install the switch and wire it up. If you are running a chipped OBD1 ECU you can disable the oil pressure check in the tuning software. Or you could take the long route and convert to OBD2 and run the stock P0A ECU.

[Hostile]

The ecu is a jdm p13. The only place there is to fit a plug is were the dizzy is located at, so they both won't fit. Was the vtec solenoid not needed on ob2 motors?

[Hostile]

The engine is a h22. The ecu is a jdm p13. The only place there is to fit a plug is were the dizzy is located at, so they both won't fit. Was the vtec solenoid not needed on ob2 motors?

[GhostAccord]

OK so it's an H22....should have asked that first I guess. Just assumed F22 as some of them do not have pressure switches. as well IIRC the JDM H22's do not. If you are running a JDM engine with a JDM ECU you will not require the pressure sensor.

[Hostile]

That would be sweet, hopefully that's all that will be required.

[HappyGilmore]

Don't they just have a solenoid with a wire that goes to from the ECU? That's what mine has and its a JDM H22. Please correct me if I am wrong.

[Hostile]

Okay, so the more I look into this the more I keep hearing that the jdm ob1 h22a automatic did not come with the vtec pressure switch. So my last question is that as long as I have the jdm auto p13 ecu and p19 tcu I should be fine because the switch is not needed? Thanks for your help GhostAccord.

[GhostAccord]

That is correct!

Your welcome. Good luck finishing your build!

[Zato]

That is correct!

Your welcome. Good luck finishing your build!

had that issue as well but now it makes sense great info now i gotta wire it and turn it on.

[Hostile]

I ende up adding a vtecc solenoid switch froim a 94 accord and ran it to the ecu. Vtec works and noi issues.

[Alex13mod]

on my F20B VTEC Motor 2000 didn't come with one. The JDM motors do not come with that Solenoid. You can add one in and just wire it up to the ECU and you should be good to go.

[GhostAccord]

on my F20B VTEC Motor 2000 didn't come with one. The JDM motors do not come with that Solenoid. You can add one in and just wire it up to the ECU and you should be good to go.

They all come with the solenoid, it's the pressure switch that they are lacking......I'm pretty sure that's what you meant though.

[nusdogg]

Yup.

Most JDM DOHC VTEC engines don't come with VTP switch. If you're running the JDM ECUs then you won't need one. Once you get a chip ECU with a USDM basemap, it'll throw a cel, and you will need a USDM VTEC Solenoid that has one. Otherwise, you can keep your JDM VTEC Solenoid and wire it from the ECU and tap the VTP Switch wire into the VTEC Solenoid wire. It works and no more CEL.

[illinois_erik]

Ok so in short:

JDM H22a= No Oil Pressure Switch on VTEC solenoid (Just a bolt)
|
|-> JDM ECU = ECU Doesn't look for it, Not needed.
|
|->USDM ECU = ECU looks for switch (Add One;Short Solenoid/Switch pins, Customized Tune)