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Thanks! This helps a lot! I can see exactly what parts are missing from my car. The only difference I see is that my intake manifold does not have provisions for mounting the EGR as shown in the diagram you provided. Perhaps the manifold I have is from a non-California version of this engine...

Thanks for your response. I know the problem is related to the EGR system. As mentioned previously I did look this up in the Haynes manual, but I have idea where to look for the EGR valve. I've attempted to describe the only place the valve could have been mounted on the engine, but am not...

Sorry, I don't have a clue how to insert a pic. I read the procedure and it is in geek speak which is completely foreign to me. I am very busy trying to resolve my car issues at the moment, and can't take time out to learn a new skill set.

Hello to all, My ’91 Civic DX, 1.5L, Dual Point EFI, auto-trans, is throwing code 12 from the ECU. First, some history. I purchased this car about one month ago, and it had a blown head gasket, among other deferred maintenance. I removed the head and had it resurfaced, just to be sure it was...

Thanks, RonJ. I'll do as recommended by you. Just to be sure, the "Control Box" is the one housing the EGR Solenoid, MAP and CVC ?

Hi all, I recently bought a '91 Civic LX, D15B2, Dual Point Injection, automatic, sedan which is throwing codes 1 and 12. The engine does not idle well at all, and is running very rough, except at higher engine RPM, say, above 3000, where it appears to smooth out a bit. It starts easily but...

My '91 D15 is also throwing the 16 Code. I've reset the ECU and the Code comes back after running the engine for just a short while. I removed the injectors and tested the resistance per the values given in the Haynes manual. Both injectors are within the specified ranges. Where do you find...