I got a 97 dx w a 99 d16y8 swap z6 5speed has a p28 obd2 to obd1 harness engine harness was switched to obd2a from obd2b i am in the process of trying to at least pass my state inspection for starters i purchased a p2pa34 ecu for emmision i was told i could plug and play it but when i donplug it ceanks but wont start do i need to get it flashed anyone???

 

Sounds like since you have an OBD2>1 harness adapter, you are probably missing some wires, most likely crank angle sensor.

Can't flash OBD2 ecus for b/d/h/f-series.

 

The dude claims he had a p2p in it and ran it w a p2p already

 

Also i drove the civic to autozone (w the p28 plugged in) and swapped the ecu to the obd2a unplugging the p28 and obd2 to obd1 harness the scanning tool they use wouldnt register the ecu

 

Verify the wiring... That'd be my next step.

Multimeter on ohms, check for continuity for things.

 

I dont even know where i would startbor what im looking for

 

Download the factory manual, and start tracing engine control wires.