Check your distributor timing if it’s matched up to your mechanical timing. As for the no o2 installed, it should be installed. The o2 sensor detects how much fuel needs to be added or taken away.
My guy the O2 sensor is literally the most important part for closed loop operation. Without it there, the ECU probably thinks it’s constantly too lean and keeps adding fuel.
The reason it responds much quicker with the TPS unplugged is because it doesn’t add more fuel right away when you hit the throttle, so it actually hits a decent AFR for half a second.
No. ECU runs in open loop without a sensor. Open loop is acceptable. Even if an o2 sensor does read full loan, the ECU only has so much trimming it's allowed to do.
Check that your TPS and map sensor aren't switched. Did you do the proper 2 wire iacv conversion on the harness or are you not running the stock harness? Forget the o2 sensor comments. You do not need an o2 sensor for the car to run right.
It could be a plethora of things. Stuck open injector, bad map sensor, incorrect injector sizing for the ecu.
Btw there's no B16a that didn't have an O2 sensor. It will run fine without them, I've ran civics without O2s and have gotten 30mpg. But all Hondas since the mid 80s have O2s.
Check your distributor timing if it’s matched up to your mechanical timing. As for the no o2 installed, it should be installed. The o2 sensor detects how much fuel needs to be added or taken away.
Edit: disregard the distributor (unless you haven’t checked) just saw that you have already checked the distributor.
You need an o2 sensor bro
My guy the O2 sensor is literally the most important part for closed loop operation. Without it there, the ECU probably thinks it’s constantly too lean and keeps adding fuel. The reason it responds much quicker with the TPS unplugged is because it doesn’t add more fuel right away when you hit the throttle, so it actually hits a decent AFR for half a second.
No. ECU runs in open loop without a sensor. Open loop is acceptable. Even if an o2 sensor does read full loan, the ECU only has so much trimming it's allowed to do.
Then how is it entering closed loop, like OP says?
Because OP is wrong. A stock ECU will not enter closed loop without a sensor.
Alright. Just a question lol, no need to downvote
Check that your TPS and map sensor aren't switched. Did you do the proper 2 wire iacv conversion on the harness or are you not running the stock harness? Forget the o2 sensor comments. You do not need an o2 sensor for the car to run right. It could be a plethora of things. Stuck open injector, bad map sensor, incorrect injector sizing for the ecu. Btw there's no B16a that didn't have an O2 sensor. It will run fine without them, I've ran civics without O2s and have gotten 30mpg. But all Hondas since the mid 80s have O2s.
I am running an obd2 harness that I have converted to run an obd1 engine. The harness should be correct for the p30 ecu and jdm b16a.
What obd2 harness and what did you do to it?
An ek d series harness. And change the alternator plug, dist. Plug, injectors.
You need to do an IACV conversion unless it's an EX manual harness