Alright, so I have a 96 OBD2a Accord with a 2.2 VTEC. About a month ago, I threw a rod out of the block, and the only engine I could find was out of a '95 Accord with a 2.2 Vtec, except it was OBD1. I put the '95 engine and trans in my '96, with the '96 harness on, and it wouldn't start. I put the '95 engine harness on again, and viola. It runs and drives fine. However, it is stuck in "limp" mode, throwing ONE cel, and that is the Crankshaft Position Sensor. I tried to bypass it by jumping it off the cam sensor, but then, it wouldn't start. It would fire, but not stay running. Put the wires back together, it runs but still in limp mode. Is the new engine and trans, from the '95 Accord, OBD2? The harness that was on the engine originally plugged right into my OBD2 harness. If it is OBD1, what do I need to do as far as an ECU conversion? I know I would need an OBD1 Ecu and jumper harness. However, what about the trans? The OBD1 cars had a separate computer for the trans, where the '96 is built in. Would I need to get a TCM and wire that into the system? I'm a complete noob when it comes to computers and sensors and all that. I grew up owning a '75 Camaro, so this is all new to me. Any help, advice, etc. would be much appreciated.

 

On your car the crankshaft sensor is in the oil pump housing. obd1 cars have the that sensor at the distributor. You need an ecu jumper harness and a harness for the distributor connectors. You can try rywire.com

 

Ok, thank you. What about the transmission? What do I have to do about that? Both are automatics. Do I need to get a TCM, and a jumper for that?

 

I also have the obd1 dist. in the car now. Like, I put the motor and trans from the obd1 car into my obd2 car, including the dizzy, alt., power steering pump, a/c compressor, everything. The harness that came with it plugged straight into the clips at the strut towers. Would I still need the dizzy harness?

 

You have to make sure that the wire harness you have includes the 4 wires, from the distributor, for the CKP and TDC sensor. Also ensure that they are lined up with the original 4 wires on the connector on the strut tower.

 

Well, from what I can tell, they are. It runs fine, and drives well. The only problem is that at 3k rpm, it gets like a rev limiter or something, and doesn't go any higher, and the fuel shuts off. The only code, is the crankshaft code. I'll double check the wire placement in the morning.

 

Just noticed your mention of the '75 Camaro. My first car was a 383 stroked '77 Camaro and ever since then I have quickly picked up on the newest technologies..... I left carb's in the past. I have 3 old carbureted engines in my garage that will all get PGMFI without a doubt.

Most of the information that I used to learn was all found on the internet. If not directly I was able to find published books on Fuel Injection and computer tech.

 

Haha, in all honesty, I would prefer the carbureted engine over all the computer stuff. They much simpler to do swaps with. You just pull and drop, and you're good to go.

 

That is true....there is a lot less wiring.

 

lol it's not running and driving fine if it's in limp mode and doesn't go above 3k

You will know if that engine is obd2 because it will have the crankshaft sensor. If it doesn't, then you will either need to convert your car to obd1 or get a '96 accord 2.2 vtec oil pump swapped onto yours. You should check and make sure that the connectors line up from the new oil pump and your existing harness. I still don't know if the connectors from all different obd2 oil pumps are universal or not.

If you're in CA then you can't downconvert to odb1 for emissions purposes. CARB won't let you.

 

lol I just realized that you had the '96 2.2 vtec already. Should be plug and play after you swap the pump over.

 

well, I don't have the harness to swap in the oil pump. I had figured I'd have to convert to obd1. The problem is the trans ecu.

 

Holmesnmanny is correct, Eassy fix, use your 96 engine harness, and swap your OLD oil pump To your New F22B1,and you will have a hole to put your old Crank sensor and you are good to go.

 

Now, this may be completely retarded to suggest, but I was thinking about it today. I have the ecu wiring diagram for each computer; one for a '95 Vtec, the other for a '96 VTEC. Could I not run two wires from the ecu ckpp and ckpm to the ckpp and ckpm on the dizzy?

 

When I said it runs and drives fine, I was meaning aside from that. It shifts smoothly, and all that mess. No leaks, shimmies, or anything out of place. The tops speed is about 70, and given how much the cops love me, that's fast enough. I can take the scenic route to anywhere I need to go.
I live in TN, so downconverting isn't an issue, as I where I live, I'm not even required to pass emissions or anything. The harness I am using is the obd1 harness, it plugged right into the harness on the fenderwell coming from the ecu. After I changed to that harness, the car fired right up. Before, I had the obd2 harness, and it wouldn't hit a lick. Also, instead of swapping the oil pump, I figured I might as well convert it for tuning purposes, since obd1 is easier to tune. Just, with it being an automatic, I've no idea how to do the conversion... Most people convert 5spd, which is easier. I was looking more for an answer as to what to buy to do a conversion. Like, the Rywire obd2a to obd1 jumper, a obd1 ecu and tcm out of a '95 accord, or what...

 

you said that you had both engine manuals for the 2.2 vtec??? would you be so kind to share it ?????????????