OBD2B in an OBD2A car, help!
01-24-2012, 04:24 PM
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OBD2B in an OBD2A car, help!
Hi,
I've been doing a lot of research on this site to plan my build project, but I overlooked what I thought to be something simple! My '98 civic's D16Y7 was pulled due to a worn clutch and I was thinking to rebuild it for boost. I needed a motor in the meantime so I scooped a damaged '99 dx hatch and pulled the stock D16Y7 with harness and, luckily, the ECU. I figured same motor, same generation, same everything, just drop it in... Wrong!
I've since read all about the differences between OBD2a/b but I'm still not quite sure...
Right now I have the '99 Y7 with its harness and ECU in my '98 and it runs but it's not right. I have some canister on the firewall beside the battery that the OBD2b harness doesn't have a plug for and my tach doesn't work. I tried to hook up my scanner to check the error codes but it said my car wasn't OBD2 compatible!
From what I understand I have to install my old harness on the new motor and put the old ECU back in. Then is the distributor the only thing I will have to worry about? I don't want to start cutting plugs as I will need this harness again when I put the original engine back in, can I just swap the distributor or are they incompatible? Is there anything else I've overlooked? This damn temporary engine was supposed to be cheap and easy, I'm starting to think I should have just got a good b18b1 to boost instead of rebuilding the d16.
I've been doing a lot of research on this site to plan my build project, but I overlooked what I thought to be something simple! My '98 civic's D16Y7 was pulled due to a worn clutch and I was thinking to rebuild it for boost. I needed a motor in the meantime so I scooped a damaged '99 dx hatch and pulled the stock D16Y7 with harness and, luckily, the ECU. I figured same motor, same generation, same everything, just drop it in... Wrong!
I've since read all about the differences between OBD2a/b but I'm still not quite sure...
Right now I have the '99 Y7 with its harness and ECU in my '98 and it runs but it's not right. I have some canister on the firewall beside the battery that the OBD2b harness doesn't have a plug for and my tach doesn't work. I tried to hook up my scanner to check the error codes but it said my car wasn't OBD2 compatible!
From what I understand I have to install my old harness on the new motor and put the old ECU back in. Then is the distributor the only thing I will have to worry about? I don't want to start cutting plugs as I will need this harness again when I put the original engine back in, can I just swap the distributor or are they incompatible? Is there anything else I've overlooked? This damn temporary engine was supposed to be cheap and easy, I'm starting to think I should have just got a good b18b1 to boost instead of rebuilding the d16.
01-24-2012, 08:21 PM
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Re: OBD2B in an OBD2A car, help!
Figured so, thanks. I'll hopefully get that swapped tomorrow afternoon and test drive it Thursday, planning to run a TSD rally Saturday!
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