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92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
So, I’ve got a D16Y8 from a 99-00 civic ex that I just bought. I’m wanting to swap it into my 95 civic lx.
I have the obd2b wiring harness, and 37820-P2P-A12 ECU. Upon further inspection I found that the green plug on harness has no slot on the ecu listed above..
Re: 92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
The green plug actually plugs into an opposing plug under the dash of a '96-00 Civic... it is part of the dash harness. The '99 Y8 engine harness and P2P ECU will NOT work in your '95 Civic.
Re: 92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
Originally Posted by JRCivic1
The green plug actually plugs into an opposing plug under the dash of a '96-00 Civic... it is part of the dash harness. The '99 Y8 engine harness and P2P ECU will NOT work in your '95 Civic.
So in that case, what ecu and harness should I be running? If I’m not mistaken someone told me use P28 obd1 ecu and d16z6 harness…
Re: 92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
That sounds like a good start (and the way I would do it by the way). The distributor and fuel injector plugs will be different. You can either convert/graft in the proper OBD-2 style plugs or purchase adapters for a more "plug-n-play" solution. The P28 will work fine. You will not need to worry about the knock sensor or the CKF (crank position type sensor found down near the crank pulley) plug near the alternator... the P28 doesn't recognize either of these two sensors. For the IAT sensor, you will need to do one of 3 things: 1) Swap the intake manifold back to a '92-95 D16Z6 style so that it plugs right in. 2) Buy an aftermarket type intake manifold (like a Skunk2 Pro series) with the provision to mount an IAT sensor into the intake manifold so it acts like an OE D16Z6 intake manifold. 3) Mount the IAT in the intake tube/air filter like you would find in a '96-00 Civic EX, which would require you to change the plug style and lengthen the wiring from the original IAT plug on the '92-95 Civic engine harness. This last choice would be the easiest, but it is also, unfortunately, the worst choice since the P28 ECU programming is designed to read a much broader temperature range from the IAT than the sensor in the intake tube can provide. The sensor really needs to be mounted to read the air temperatures INSIDE the intake manifold for maximum safe performance and fuel economy.
Re: 92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
Originally Posted by JRCivic1
That sounds like a good start (and the way I would do it by the way). The distributor and fuel injector plugs will be different. You can either convert/graft in the proper OBD-2 style plugs or purchase adapters for a more "plug-n-play" solution. The P28 will work fine. You will not need to worry about the knock sensor or the CKF (crank position type sensor found down near the crank pulley) plug near the alternator... the P28 doesn't recognize either of these two sensors. For the IAT sensor, you will need to do one of 3 things: 1) Swap the intake manifold back to a '92-95 D16Z6 style so that it plugs right in. 2) Buy an aftermarket type intake manifold (like a Skunk2 Pro series) with the provision to mount an IAT sensor into the intake manifold so it acts like an OE D16Z6 intake manifold. 3) Mount the IAT in the intake tube/air filter like you would find in a '96-00 Civic EX, which would require you to change the plug style and lengthen the wiring from the original IAT plug on the '92-95 Civic engine harness. This last choice would be the easiest, but it is also, unfortunately, the worst choice since the P28 ECU programming is designed to read a much broader temperature range from the IAT than the sensor in the intake tube can provide. The sensor really needs to be mounted to read the air temperatures INSIDE the intake manifold for maximum safe performance and fuel economy.
Thank you so much!! I’ve been really struggling trying to get a way to and from work. Hopefully I can get this new motor in this car and get it running.
92-95 Civic D16Y8 swap… need help with wiring and ecu issues!
