The rear O2/cat monitors require somewhat specialized driving conditions for performing their operability tests. Maybe you just didn't get into the right 'zone' for long enough. They need fully-warmed-up, steady-state, medium/low torque freeway cruising for about 30 minutes ... in 'moderate' weather conditions. ----- Original Message ----- From: Adam Wolf To: Miata Power List Sent: Wednesday, September 17, 2008 10:23 AM Subject: OBDII readiness monitors...
I'm having a devil of a time and I'm hoping the list can help me. Car: 97 w/ 99 motor. I normally run the Link, but had to swap the stock ECU back in for emissions. I swapped ECUs a month ago for my e-test that has a deadline of this friday. I just took the test and failed in order to get the 1 year extension. So here's new stuff. Some of this has been added over the course of the last month in an effort to get monitors to set. New front o2 sensor. I recycled a 30k mile old o2 to replace my original 125k stock rear o2 sensor that I thought might be "tired". new plug wires (it was time), new-ish magnaflow cat (about 6 months since putting that in). Car runs fine. Not as smooth as with the Link, but fine. It REFUSES to set the o2, cat, and EGR monitors! I've driven an honest 500 miles in various conditions. I've performed a handful of different "drive cycles" I found on Miatanet including one that claimed to be for a 97 specifically. Still nothin. I can have 2 monitors not ready in Albuquerque, but not 3. 3 is fail. Does anyone have any ideas? I never had this problem before. On a normal commute to work, this car would run and pass all tests in 2 days (4 cold-start drives). But 2 years later after running the Link, there's no joy. I just need to get ONE more test to run. I'm going crazy. thanks, Adam ------------------------------------------------------------------------------ _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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