juice148
New Member
i have a 1991 civic si. when i bought it, it had a o2 code. so i replaced it with a universal one. about two weeks later it threw it again. this time i went and bought a direct fit. i installed it and reset the ecu. well about 3-4 days it came on again. i replaced it again with another direct fit. well its back on and it runs like crap when the cel comes on. i have tried replacing the ecu and ive tested all wires going to and from the ecu and all the other sensors. i was wondering if anyone has had trouble like this and any info on it. thanks
