96' Accord/H23A Vtec swap - Honda-Tech - Honda Forum Discussion

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96' Accord/H23A Vtec swap

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Old 04-06-2011, 04:59 PM   #1
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Default 96' Accord/H23A Vtec swap

I am looking for the wiring pin out of a JDM Auto P13 ecu (OBD2)
and JDM Auto PCF ecu (OBD2)

Looking for help from the likes of GhostAccord if you have the time.

Customer is wanting to swap in a H23A vtec Blue top with Auto transmission into
a 1996 Honda Accord LX with Automatic Transmission.

I know the engine will physical bolt into the car without problems. The problem is gonna be wiring. The customer insist on the car staying OBD2.

I have the pinouts GhostAccord posted on here for the 1996-1997 Accord F22B1 and F22B2.
Looks like the only thing that needs to be added is the additional wiring for Vtec solenoid and vtec pressure switch(for usdm ecu, may not need it for jdm ecu) and knock sensor.

For the above. I'm guessing I will have to add the pins to the ecu, because the ecu diagram for the 1996 Accord non-vtec shows BLANK for the vtec pressure switch pin, vtec solenoid pin and knock sensor pin.

The only think I'm concerned about is if the JDM PCF Auto or JDM P13 Auto have the same pinout as the 1996 Accord?????

I will be using the H23A Vtec distributor (8 pin) with a rywire adapter from the Accords Harness. This should fix the external coil problem, and the CKP/TDC sensors being located on the oil pump.

I will also be using the h22A intake manifold with Peak and Hold injectors and the factory
resistor box will be in place on the Accord. So that should be fine. Using this manifold will also fix the 3 wire IACV problem with the OE H23A VTEC intake manifold.

Any advice on the following, does anyone see a problem with the 1996 Accord Auto staying OBD2 with the H23A vtec swap. I know, neither JDM PCF Auto or JDM P13 Auto Ecu will pass state emissions test. The goal is to keep the Accord OBD2 and swap over the H23A vtec engine without a CEL light.

Last edited by AllMtrRex; 04-06-2011 at 06:40 PM.
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Old 04-07-2011, 08:21 AM   #2
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Default Re: 96' Accord/H23A Vtec swap

The PCF ecu will be a problem, since the ecu will be looking for a 3 wire IACV. Unless, I can
get the pinouts for the ecu from a reputable source.

So the only option is the Auto OBD2 P13 ecu. I need the pinouts for it as well. There is also the issue between the P13's fuel/ign tables vs the PCF's which is the stock computer for the H23A Blue top.

Also, there is the 8pin distributor, with no rpm/tach signal wire problem.

The EGR valves are also different. I will be using the H22 EGR valve with the P13 ecu which looks to be the same as the Accord. H23A vtec is not the same type of plug.

H23A vtec oddball sensors can be a pain....
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Old 06-04-2011, 06:30 PM   #3
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Default Re: 96' Accord/H23A Vtec swap

good luck....you should throw a cel for the EVAP either way. you need the 0bd2 p13 which only came in a 96 prelude..i paid $900 for mine new, there was only one available at honda in Cali and I live in NC. the prelude has 2 purge valves and the accord will have one so you will throw a CEL...you have to reset the ECU and get it inspected in between the time that it resets but b4 the light comes on. i did this for 3 years. all other obd2 p13 ecus have an immobilizer.
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96, accord, allmtrrex, ecu, h23a, honda, hondatech, intake, obd2, pcf, pin, swap, transmission, vtec, wiring

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