ok so i have a 96 accord ex 5 speed with a 98 jdm f23a motor,i used every sensor and everything else from the original f22b1! only cel i have is down stream o2 sensor. on cold start it runs great but after warm it i hit the gas like to back out of the shop and it starts missing in 1 and 2. i checked while it was missing and i have spark and not 100% but think i have fuel also i have no idea whats going on someone help im sick of not having a car!

 

I don't really understand why you'd go from vtec to nonvtec but be that as it may, you're using an ecu for a f23a ?

 

f23a is vtec so idk wtf your talking about but no im using my f22b1 ecu! using everything from the f22 only thing f23 is the block and head!

 

O2 sensors don't start relaying information to the ecu until they reach operating temperature, roughly 600 degrees, your ecu is operating without data from the O2 sensor in open loop on startup and then getting bad information when the data is sent.
Its likely a bad O2 sensor.

 

bad 02 sensor is not going to make it miss in 2 cylinders

 

The o2 code is most likely a result of the misfiring.

Which distributor are you using? F22b1?

 

make sure your tps dident get cracked during the swap. double tthe spark wire order.

 

02 is because there is no downstream o2 sensor again not going to cause a misfire!! and spark wire order is rite i know it is and yes its the f22b1 dizzy and everything in the dizzy is new from coil to ignitor so its not the dizzy!

 

I did not say it was causing the misfire, I said the RESULT of your misfire because did not realize you did not have one in place at all... must have misread that.

Carry on, sorry I bothered to ask about the distributor.

 

Check your firing order. I posted a diagram in your other thread. I had the exact same problem when i had the F23 in my accord. I was 1000% sure my firing order was correct, but it wasn't.

The F23a5 is non-vtec, btw.

 

mine jdm f23A VTEC!! not non vtec i never one time said f23a5 or a1 or anything its an f23A trust me its a vtec motor and no i had my firing order exactly like yours and it didnt run trust me my firing order is rite yours pry didnt run because you were using the cb7 ecu i have a obd2 cd6 different firing order!

 

plus i said it runs just fine till its warmed up, so clearly not firing order it doesnt mis fire til the motor warms up

 

Check the engine coolant temp sensor wiring and the sensor itself. It's the 2 wire sensor located in the head directly under the distributor.

 

no cel for it plus its new cause i snapped the other one off on accident putting the motor back together

 

Get yourself an F23 intake manifold (3 wire IAC) throttle body & ECU and see how that works.

 

EGR ports clogged ftl.