EG civic B18c2 OBD2 - Intake secondaries not sure if theyre wired in??

[Egxris]

Hi Guys.

Ive got a 95 EG Civic with a B18C2 OBD2 P72, OBD2 to OBD2 harness and a OBD2 loom/dizzy etc.

Vtec has a switch over at 4500rpm but i cant tell if the secondaries are opening no apparent note change just the single one at 4500rpm~

What wires on the ecu/loom/harness should i check to make sure its wired in correctly, what should i check(black box under the intake) on the engine to see if its plugged in.

any links/tech articles on this would be great

thanks

Neil

[stndrd]

From memory the dual length intake runners are vacuum operated, but if you are wanting to go over the wiring, Pm mocchi, as he has a complete break down of which wires go to what pins for the obd1 -> obd2 conversion harness for the ecu. Otherwise have a read of the workshop manuals which can be found on pdftown.com

[Egxris]

Cheers. ive been reading up on it. will check to see visually if the secondaries open when i free rev it. go from there.

[ECU-MAN]

you have to rev it to about 5k.

I would not do that with out loading the engine. Connect a test lamp to the IAB Solenoid and watch it. it should go out when the rpm goes above 5k on at idel.

the ECU will put out a ground signal to enable below 5k

[dorikin]