Rep Power: 256

theres a little white plug under the solenoid. anyone know what it is and if ill have to hook it up to something when i do my head swap?

 
Rep Power: 256

anyone???

 
Rep Power: 305

I don't know, I didn't hook it up, my car ran fine.

 
Rep Power: 256

works for me. now i just need the ecu pinout for 04-05

 
Rep Power: 245

thats the oil presure switch. it's so the ecu knows u have adiquit oil pressure for vtec to engage with. not sure if it will cause DTCs on out cars or not.

 
Rep Power: 256

i saw it in the honda service manul today. im not going to hook it up if i can ever get my vafc-ii working so i can use the head.

 
Rep Power: 305

d17a1 wire harnesses dont have this plug of course since it doesnt have vtec. Many people have run this swap without using that so you should be fine.

 
Rep Power: 241

yea thats what that is. the oil pressure sensor. once again since your car didnt have Vtec then you dont need to worry bout it. but i do believe if you use a OEM Vtec ECU then you have to wire up that plug. it lets the ECU know that theres enough oil pressure to engage Vtec. if using a Vtec controller then this plug is not needed. by Vtec controller i mean your VAFC II that you say you have

 
Rep Power: 256

yeah ive got a vafc-ii if i can ever get it working. its all wired up but it wont come on when the switch is on.

 
Rep Power: 424

Just looked in the manual at it, its just the pressure switch for VTEC fluid as was previously stated, and looks like it can just be ignored. The test for jumping the solenoid itself is completely independent from the pressure switch, so bypass it/ignore it. Keep in mind that that switch is there for a reason, and be mindful of your oil pressure even though the computer isn't checking for you. IIRC if the engine is too cold, it won't engage, and without the switch, it will.... thick oil, little hole, probably not a good idea. Either use RPMs to engage it, or you can use e-manage and the greddy MAP sensor to control it with the map sensor voltage.

 
Rep Power: 300

when i replaced my headgasket i ran the wrong wire to this and ****ed it up. if your oil light comes on do not drive it anywhere, that part is like $120.

 
Rep Power: 263

i think this was in another thread i gotta search for it

 
Rep Power: 256

well ive got backup parts now. just picked up a full d17a2 complete with starter and everything. bought the whole motor just for the rods since i bent mine when i hydrolocked the motor.