Mr_ET

Hey guys quick question, I have a 96 OBD2A B16a3 Del Sol engine with its complete harness, I am installing it into a 94 Del Sol SI and converting it from auto to manual.

I keep reading that the OBD2A harness on the B16 is backwards compatible with the OBD1 harness in the car. The plugs line up on each side of the engine bay fine and will plug in without issue (I checked).

If I keep that harness on the engine and plug it into the car as is and run a JDM P30 OBD1 ecu will it all work properly?

I am worried about the ckp sensor, obd2a dizzy and knock sensor that are all different or not present on OBD1 cars.

I'd like to avoid using the OBD1 harness as it would require modifying the EVAP purge solenoid plug, adding a knock sensor wire, swapping injectors, modifying the IAT plug, rewiring in the OBD2A alternator plug and changing the dizzy to an obd1 version.

Let me know if you guys think it would work fine and not throw any codes?

Mr_ET

anyone?

94EG8

The ECU will run the engine fine, but you will need to run a single wire for the knock sensor from the ECU to the engine harness. OBD1 and OBD2 distributors are identical electrically, literally the only difference is the physical plug (changed from 2 plugs to 1) the OBD1 ECU wont look for a CKP sensor.

Mr_ET

excellent then I will cut the Knock sensor off that harness and manually pin it back into the ecu plug.

thx!

Since I'm converting also from auto to manual, I'd like to take a second and than you for your writeup of how to do it with the proper relay. I plan to do it that way so it all works OEM.

thx