alright I have a 97 civic 2dr DX. I swapped in a 98 civic EX motor with harness and ecu. the car consistently throws a 1456 fuel tank leak code. the reason for the "leak" i believe is the fuel tank pressure sensor circuit on the ecu. the ex ecu is looking for the sensor, but my car doesn't have it. so i gave it an average (2.5v) input (like ffsquad.) The sensor fluctuates from 1 to 5 volts depending on the tank pressure so giving it a constant voltage is probably causing it to throw the light.
Is there a way to fix this without swapping my gas tank for an ex tank? can I add the pressure sensor to my tank? Does anyone know a way to create a better circuit simulator?
Thanks

 

anybody?

 

yeah get an ecu that doesnt look for the fuel tank pressure sensor. Maybe a p28 with a conversion harness.

 

I'm sure a chipping program can disable it...which I don't know but I'm sure one of htem can..hondata might be able to...

 

I need to stay obd 2, otherwise i would definatley do that. and by staying obd 2 I keep an ecu that hondata can't use....suck

 

Besides a stock obd1 p28 you could install a FTP sensor. There is a guy on the board who claims you dont have to change fuel tanks to install the sensor but it still sounds like a pain to do. https://honda-tech.com/zerothread?id=1581107

 

BTW, the link you posed, the last post says this will work : "If you want vtec then u can use a P30 from a 96 del sol Dohc"


i dont know, i just picked out something i saw in the thread maybe useful...