Civic-EG.com Forum 3.3.1

[Apexracing]

- Thu Mar 11, 2010 4:36 am #180553 well make sure the wiring is good, and if its a obd1 ecu then you just might need a new sensor. is your sensor located before or after your cat? it needs to be before. on obd1 cars.

- Thu Mar 11, 2010 4:39 am #180555 currently i have no cat. its 3'' pipe streight out the rear. the o2 sensor is located just after the flexpipe on the down pipe

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[Apexracing]

- Thu Mar 11, 2010 4:44 am #180556 thats a ok spot for it. if its from a used car i would probably replace it. also check your vacuum connections if your idles rough.