93 Camry failed smog - O2 sensors

[travishu]

Hi,

My 93 Camry v6 failed smog (california) twice. I replaced the Catalyst Converter after the 1st failure but failed the 2nd time. I was told it could be the O2 sensors. I replaced both upstream sensors with the Denso Universal model #234-1057. If I have both sensors installed but disconnect the connector, the check engine light doesn't comes on. Is this normal? This is a single wire O2 sensor. How can I test to see if the wire connection is still good? Also, any information on why it failed smog is greatly appreciated. Btw, this car is from New Mexico so it doesn't have the downstream O2 sensor. It shouldn't be any problem passing california smog, right?

Here are my smog test results:

Test #1 - No replacement part, done at regular smog station

HC (PPM) CO (%) NO (PPM)

MAX AVE MEAS MAX AVE MEAS MAX

AVE MEAS

15 mph 84 27 174 0.49 0.02 0.57 692 147 1810

25 mph 34 16 35 0.46 0.03 0.07 711 134 228

Test #2: Replaced Catalyst converter done at smog only station

HC (PPM) CO (%) NO (PPM)

MAX AVE MEAS MAX AVE MEAS MAX

AVE MEAS

15 mph 84 270 181 0.49 1.99 0.59 692 1912 2814

25 mph 34 220 34 0.46 1.96 0.14 711 1712 398

[trentmeyer23]

I think you signed up to the wrong country's forum buddy.

Edited August 26, 2011 by trentmeyer23

[travishu]

I think you signed up to the wrong country's forum buddy.

Technical ,problems, knowledge without borders......wow

[trentmeyer23]

I'm talking in regards to the smog regulations. To test the wire do a simple continuity test