I have a 97 hatch with a "Mini-Me" swap in it that I need to smog(Star smog). I bought the car this way and its been really reliable so far(I had it for a year now). I need to smog this car and I thought by putting the stock pcm back in it would be fine. Apparently the p28 that is in is tuned to make it run cause when I put the stock pcm in I have a Cel for IACV circuit. I did a little digging and found that it was a 3 wire made to a 2 wire IACV. So the orange signal wire is not even attached to anything.
The p28 has an adapter harness that it plugs into to work but I guess it is not hooked up to OBDII port.

Is there a way around this ?

 

Anyone ???

 

that computer is obd1

and if you still can have a 3wire iacv (on a y7 throttle body) and plug that orange wire plugs into a13
and Im guessing it originally came stock with an obd2a computer

http://www.phearable.net/tech/wiring...schematics.gif
http://www.phearable.net/tech/wiring/wiring.96-98_2.jpg


plz explain what motor you have more details about the car

 

You will need an obd2 ECU if they run a diagnostic.

 

From what I know its a stock 16y7 block and a 92-95 vtec head(IDK which one), 2 wire vtec wired to a p28 using a adapter harness t plug into the stock wiring.

I want to use the stock ecu(OBDII). Maybe the signal wire(orange) can be jumpered somewhere else for the ecu to recognize it and turn off the cel. IDK.

Will a d16y7 intake work on a 92-95 vtec head ?

 

cant help you with that intake working on another head I have no information about that

but you need a d16y7 throttle body for that 3 wire iacv to work along with the plug for it

or you could try and source an obd2-a single over head cam vtec manual ecu and try that in its place and then it would look for a 2 wire iacv mabey


I just know how to go from 2 wire iacv to 3 wire iacv

 

I'm not sure the vtec ecu would plug in. The adapter plug eliminates the diagnostic port(assuming) and if I have to use it again to plug in a vtec ecu that would defeat the purpose. The intake I'm not sure it would bolt up either because it is completely different. I appreciate the help man , thanks !

 

Just get the correct head and run the correct ECU. Whomever thought this was a good idea in CA of all places was an idiot.

No matter what you try in this configuration you're going to fail.

 

That's what I'm gonna have to do ! When mods like this was done it was easier to get around the smog with a hookup but now Cali has the new smog program that targets smog shops its either really hard or expensive to get a hooked up smog.

 

you need a d16y7 throttle body for that 3 wire iacv to work along with the plug for it

 

that adapter on the ecu plugs should just unplug and leave the original obd2-a plugs there