Originally posted by sexygreencivic
my check engine light has been on since the swap. I just ignore it.
Its code 91 (fuel tank pressure sensor ) something to do with fuel mixture... i found out upon investigation that Vtec and non vtec have different fuel tank pressures (believe it or not) so in order to make the check engine light go off, I have to go get a 97 civic EX fuel tank pressure sensor.
Get out the Haynes manual :thumbup: and read
What year/model is your car and what swap did you do?