i currrently own a 97 civic with a b16a obd1. i dont drive it everyday so it sits sometimes , anyway it has a running issue. it will run fantastic when the vehicle sits in cold weather for a long time but as soon as u start driving it for a good 2 miles it slowly starts loosing power , and then eventually it just dies and will not start at all . i have noticed tho that the colder it is outside the better it runs untill it warms up. i have replaced the jumper harness at the ecu that adapts the obd1 to obd2 ,because the pins were coming out of the connector. thought that would fix it , but did not. i also replaced the distributor because the winding and secondary resistance on the coil was a little high. i suspect the ecu is faulty but i havent really confirmed it 100% if anyone has any guidance on this issue or has had or seen this problem before fill free to sent a comment or pm me . thanks

 

Your ecu codes and fuel pressure readings would help in diagnosis

 

I forgot to menton that no codes at all and fuel is at t he correct psi level

 

I also have preformed a cat pressure test and it came back ok 02 sensor is fine too

 

Have you verified that you're getting good spark and fuel?


When's the last time it had a full tune up?