Hello Guys,

First and foremost, I am new to this forum and I am in no way a qualify mechanic. Just bought an 97 Honda Accord, H22A black top with JDM P0F ECU. I'm having some issue as per below list:

1. I start my car, some times it runs fine, and some times it will idle rough and dies out. *Suspected IACV, so I had cleaned and tighten the spring, yet problem still remains

2. When I drive the car for some time, the car will suddenly loses power / hesitate during acceleration some times the car will even feels like fuel starvation and I cannot accelerate further, CEL will show up during the incident happened, once I restart the car the CEL will go away, it will then pops up again whenever I drive it for some time.

I really hope someone here could help me out on this.

 

What code is it throwing....hook a scanner to it..remove the ashtray..the port is behind it

 

​​​​​​Hi, thanks for the reply. For my car, there is no port behind the ashtray. But I did managed to extract the code by shorting the blue pin below the passenger seat. Below are the code I managed to extract:

1. 23 - knock sensor *gonna get it changed but not sure whether this will be the issue?
2. 12 - EGR *I have EGR delete
3. 3 - map sensor *I have changed to a new sensor so it is most likely not the issue

 

Hi hondaslave1342,

Thank you fro the reply. For my car, it doesn't come with the OBD port behind the ashtray. However, I did managed to extract the CEL code by shorting the blue pin under the glovebox. Below are the CEL:-

1. 23 - Knock Sensor *Imma get it change soon but could this be the culprit?
2. 12 - EGR *I have EGR delete
3. 3 - Map sensor *I have changed it but problem persist so I am not sure what triggers the CEL 3

 

A loose/overly tight/ bad knock sensor could certainly cause an issue. If the knock sensor starts reports a knock, the timing will retard. If the knock sensor reports a lot of knocking suddenly, it will retard the timing tremendously (10 or more degrees) which would feel like a loss of horsepower and be very detectable.

I'm not sure how much happens if it detects the EGR delete, probably not much while driving or warmed up.

On the map sensor, can you double check the voltage to make sure it's not the wiring vs the map sensor itself.