I've spent the last 2 years deciding weather or not to build and boost my f22b2 or just make the decision to swap in the ever popular h22a. I have finally decided that the swap would not only be cheaper, but also open my scope for aftermarket engine mods. All around it seems like the right decision. I have researched this topic for a long time and am well versed in the mechanical procedure. However, I am nervous about the wiring. My car is the 1996 accord lx automatic (not for long) and is in fact obd1. I am looking at an obd1 92-95 h22a. Are the only wires I need to run to the ecu the IAB, Knock, and vtec? For I believe those are the 3 my f22 harness is lacking. Plan on purchasing the engine in a couple weeks and any info on this would be great.

 

So you converted your '96 Accord into OBD1 then? Otherwise it's OBD2 from 96+ on the Accords.

 

No, my CEL came on and I went to a local autoparts store to rent their obd2 tester and myself as well as 3 other associates there were unable to locate the obd2 connector in my car. So I got out my chiltons and haynes to find out where my ecu was located it. Pulled up the passenger side carpet and removed the ecu just to see it stamped "JUL 22 '95. Found the obd1 blue connector and did the paperclip trick. the ecu reads "P0J-L60"

 

But that doesn't mean it's an OBD1 though. As I read on here, it is said that some 96-97 OBD2 Accord will have this blue two pin connector. This will tell you if it's an OBD1 or not, when you have the F22 out of the engine, I'd look at the oil pump housing to see if there's a CKP sensor bolted to the oil pump housing. If there is, it's not a OBD1. OBD1 has the CKP sensor located in the distributor while OBD2 has them on the oil pump housing behind the timing covers.

 

So what you're saying is although my car does not have the yellow obd2 diagnostic connection on the driver side it is obd2 anyways?

 

I've been doing some research on this because what you're telling me is completely different than everyone else. According to wikipedia, "1996: The OBD-II specification is made mandatory for all cars sold in the United States." Therefore if my car is stamped that it was manufactured JUL 22 '95 it would in fact not be implementing the obd2 system, for it was not required yet. All cars manufactured in 1996 did. This car has been in my family since it was brand new. It was driven well and is in wonderful shape. I know there were not any "modifications" made to it's on board diagnostics system. So all of this put aside could we please get back to the original post?

 

Your car, a 1996 Honda Accord is OBDII. I owned one.

The OBDII connector is located behind the ashtray, simply pull it straight outwards and the connector is exposed. The blue service connector located behind the glovebox is present even on OBDII vehicles. Again, I had the same car and did an H22A swap and down-converted to OBDI. After you do the swap the OBDII port is useless and you will be required to use the service connector behind the glove box.

If you cannot read through the Accord FAQ and read those threads to glimpse what wires you need to modify then there's not much more a user can tell you.

A direct link to the guides:

http://www.accordinglydone.com/forum...hread.php?t=29

and

http://www.h o n d a - a c u r a.net/forums/do-it-yourself/47617-h22a-swap-faqs.html

^ is edited out for whatever reason, remove the spaces in the URL

*edit* I'm also not sure why you are under the assumption it is a yellow OBDII connector? Yellow connectors are SRS (airbags, etc) and not regular accessory connections. The OBDII connector is gray in color.

 

I was waiting for TheMuffinMan to step in as I remember him talking his OBD2 Accord having the blue two pin connector.

 

@TheMuffinMan
Thanks for your conformation. The guys at the autoparts store said they were yellow, but I was informed wrong. Haynes and chiltons didn't even mention it being behind the ash tray.

@nus_dogg
My apologies to you. I appreciate your help and were just looking for your reasoning. As my findings were supported, but since this ecu isn't very popular I couldn't find anything official.

Once again, another problem is solved thanks to the members of this forum.

 

No problem, it's a good swap and I loved mine. Only reason I sold it is because I moved up to an S2000. Other than that I would have kept it (still considering another!)

Shouldn't have any issues with the swap really, I would recommend however you save up and do a crap ton of preventative maintenance on the motor while it is out of the car (seals, headgasket, wp, timing belt, injectors, etc) and you will be happy with the results. I think all said and done I did about $4000 for the motor and to have a shop drop it in while I did the ECU and all that. That also was all the parts I bought for it.

 

It's all good.

 

So would you suggest getting the 92-95 h22a which is obd1 or the obd2 one?

 

Get a OBD2 so the swap can be simple without major wiring headaches then down the road you can get a OBD2 to OBD1 jumper harness to run a OBD1 P28 Chipped ECU to get it dyno & tuned for more power.

 

So I've been doing some reading on the h22a and being ODBII. Problem is everywhere I read says there isn't an OBDII h22a. If this is the case I'd rather avoid the wiring headache. I will settle for something that is OBDII. As long as it is better than my F22B2. Maybe the F20B or H23? I just want more power and torque than my F22B2 has. It doesn't have to be a beast. Just something to make it a little more fun, can be a weekend swap, and is easy as the H22a.

 

all the 97+ usdm h22a4 are obdII. I also had some wiring hesitations before i decided to do the swap (picked up my engine this weekend, will be dropping in next weekend!) but just read all the FAQ and articles it explains everything pretty well.

 

obd2 accord has plug behind ashtray otherwise is obd1. or if you have dual tail light on body and trunk obd2

 

Honestly, unless you have emissions testing the OBDI will serve you better. You have much more expanded tuning options for less money without losing any parts compatibility.

 

I guess I wasn't exactly clear on my question and that's my mistake. On all the JDM importer sites I'm looking at the only 97-01 H22a they have is with ATTS. I can't find an H22a that's not OBDI on there. All of them are pre 96.

 

That is correct, a H22A is a JDM motor which all of them will be OBDI

 

Ok, last question. I'm about to get my tax return, so I'm trying to get everything in place for this project. Is it possible to buy the 92-96 obdI h22a engine and just buy an obdII distributor for it? I read that on another forum and figured I'd ask you guys. I know my cars harness is obdII, but I can just get the obdII to obdI conversion harness. Sorry to ask so many questions, but I keep finding different ways it has been done and since this is my dd I can't afford to be without it for a prolonged period of time (more than a week).

 

Thanks to rywire.com I have figured out the wiring and feel very confident in the wiring portion of this swap. Thanks for all the help guys.

 

good luck and keep us posted bro

 

Ok, guys. My f22 just died on me today and I only have 2k right now. Im not sure thats enough considering the obd2 h22a costs 1300 from hmotors. What about the 92-95?

 

You'll downconvert to OBDI for those motors. An OBDII H22A4 I can't imagine would be too too expensive, you could save some money and use the F transmission.

 

I can't find them anywhere other than eBay. That's what's killing me.