Hi all, I recently swapped a 1997 B18b into my 1995 Civic. I run it with a OBD1 PR4. The car runs great, except for the CEL I'm getting. I tried searching on the matter, but couldn't find anything concrete. How have you guys fixed this? I don't know whether it's a vacuum line or bad sensor, or what. The car runs fine and idles fine (idle drops when I put the clutch in, but that's it). How can I fix this? Is it bad for the car to run like this? I assume not, but I am moving to Cali in the summer and will likely fail emissions like this.

Please help! Thanks in advance

 

Hey guys, could really use some input here.

 

Still trying...

 

Run the correct ECU (P75) or at least a properly tuned ECU with the EGR function disabled. The B18B does not have an EGR.

Reference:
https://honda-tech.com/zerothread?id=2207773

 

Thank you for the reply. I know that no integras (save for the auto DAs) came with EGR. However, my ECU is not from an auto DA. It's from a manual DA/DC (still unsure on year). Are you saying that a P75 will for sure cure this problem?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JohnnyWash1 &raquo;</TD></TR><TR><TD CLASS="quote">ThAre you saying that a P75 will for sure cure this problem?

</TD></TR></TABLE>

Yes. A P75 will not seek input from an EGR. Therefore it will not throw an error code when it doesn't find one.

 

Why is the PR4 looking for an EGR?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JohnnyWash1 &raquo;</TD></TR><TR><TD CLASS="quote">Why is the PR4 looking for an EGR?</TD></TR></TABLE>

I do not know. Have you confirmed the reading with an actual code scanner? Perhaps the PR4 that you have is from a gen 2 Integra with an automatic. What is the full part number (37820-PR4-A##)?