99 Firebird O2 simulator for post-converter sensors
09-28-2011, 06:58 AM
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99 Firebird O2 simulator for post-converter sensors Hello, all. I'm new to this site and think it is great. I have a 99 Firebrd with a 350 and made the O2 simulator from the following article to trick the post cat O2's:
http://www.mkiv.com/techarticles/oxy...sor_simulator/
Has anyone done this particular modification? I got my simulators to work great, but I got the schematic for connecting to the harness on the O2 sensors. Pin C goes to gnd, pin D to +12V, pin A goes to pin 28 (HO2S Low) of the PCM and pin B (HO2S High) goes to pin 68 of the PCM. The simulator in the above link only has one output, switching from 0 Volts to .7 volts every 3.5-4 ms. I am not into "tuning" and don't have the cash to buy software, etc. to re-program the PCM, like I believe some have done to ignore the post-cat O2's. Thanks for any help.
http://www.mkiv.com/techarticles/oxy...sor_simulator/
Has anyone done this particular modification? I got my simulators to work great, but I got the schematic for connecting to the harness on the O2 sensors. Pin C goes to gnd, pin D to +12V, pin A goes to pin 28 (HO2S Low) of the PCM and pin B (HO2S High) goes to pin 68 of the PCM. The simulator in the above link only has one output, switching from 0 Volts to .7 volts every 3.5-4 ms. I am not into "tuning" and don't have the cash to buy software, etc. to re-program the PCM, like I believe some have done to ignore the post-cat O2's. Thanks for any help.
09-28-2011, 04:23 PM
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the link you posted dos not work for me :/
but when i needed to do some testing & off road use
i went with afterthoughtsauto thay wer helpful & cured my head ake compleatly.
http://www.afterthoughtsauto.com/o2sim.html
but if thats still to much $$ you culd always try 4 18mm spark plug non foulers.
2 stacked for each side. just drill out the top one to go over the o2 sensor.
but when i needed to do some testing & off road use
i went with afterthoughtsauto thay wer helpful & cured my head ake compleatly.
http://www.afterthoughtsauto.com/o2sim.html
but if thats still to much $$ you culd always try 4 18mm spark plug non foulers.
2 stacked for each side. just drill out the top one to go over the o2 sensor.
