98 Honda Civic Sensors Not Ready / will not pass inspection
 

Hi folks,
The Civic will not pass inspection in New York, engine light is not
on. The following codes show "Not Ready" O2(#1), CATALYS, O2(#2),
EVAC. (I know I need to drive the car after replacing emmision parts)
Replaced the following with Honda parts: the top(#1) O2 sensor($140)
and the bottom(#2) O2 sensor ($250)... The (#1) top O2 comes up ready
now, but the bottom (#2) O2 sensor still Not ready.. I changed the
thermostat for kicks but that didn’t help.. Not sure why it’s saying
EVAC not ready, when you loosen the gas cap you hear a vacum sound. We
put over 500 miles on thing too.. The owner of the inspection garage
called the state and they suggested the following: (this is nuts, but
we tried it) 1. Let the car sit for 8 hours start it and hold at
3000rpm until the cooling fan come on and drive it 50 to 60 mph for 5
minutes then stop for 5 seconds and repeat 3 times. 2. With a 1/2 to
3/4 tank of gas drive 65 mph for 5 minutes, stop remove the gas cap
and let it idle for 5 minutes and replace cap, then repeat 3 times.
The 3rd option I don’t remember off hand but it was similiar to the
others. Any suggestions whithout replacing the Cat?

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Same problem - NOT READY caused failed NJ inspection
 

This has been happening for some time with my 1998 Civic.

I have a similar problem with a 1998 Civic.
It always fails the NJ emissions test with three "NOT READY"
indications (O2, Catalytic converter, Evaporator)
We take it to the dealer and they claim to fix it - but it fails
when I take it to the NJ reinspection station. Eventually we
give up, and just pay the $100 to have Honda 'fix and re-inspect
the car' Somehow it passes Honda's re-inspection test - but next time
reinspection comes due - it's the same problem all over again!
I think Honda is lying when they say they fixed the car, and
they just slap a sticker on it and collect the money. :mad:

Yeah - I've heard all the stories about letting the car run through long
and short periods to get the computer to get 'ready' - I get a different
story every time I talk to a mechanic or inspection station personnel.

Nothing helps!

I found some relative reading here:
OBDII AND EMISSIONS TESTING
and here:

Went for inspection, failed because "Catalytic converter not READY" code is coming - Honda Car Forum - Accord Parts Civic Tuning Acura Racing

Did you ever solve problem - or at least find a way of getting it through the inspection process?