Clean your EGR ports. It might sound strange, but this same thing was happening to my 97 before it was destroyed in a freeway accident. I had gone about 600 miles farther than you and still had no ready light on O2, cat, or EGR. Nothing helped. I swapped both O2 sensors, a fuel pump, plugs, reseated the injectors, prayed, did some craziness to pressurize the IM slightly to check for leaks, and nothing helped.
I ran across a post on miata.net a few years ago with a guy describing the same problem. He cleaned his EGR sensor and all ports and the ECU was happy and finally gave the ready code. That was one thing I didn't try. That 96-97 ECU is a bear. Good luck! Adam revlimiter.net On Mon, Mar 5, 2012 at 9:43 AM, Brian Pifer <[email protected]> wrote: > My 97 with a FMII is due for tab renewal and I decided to modify it to be > IM legal, but I can’t seem to get all the IM readiness monitors to run. > O2, CAT, and EGR have not run after 200 miles of test driving. Any > suggestions are welcomed.**** > > ** ** > > Background info:**** > > About 10 years ago, I bought and installed a FMII – rewiring the ECU > harness and installing the ballast resistors at the injector harness. When > the Link computer came out that matched the stock harness, I rewired it > back to original. My car had about 12k miles pre-FMII and now has about > 32k miles. **** > > ** ** > > My work this last two weeks involved installing the stock ECU, stock > injectors with a second injector harness, stock MAF sensor, and moving the > power steering wire back to the PS pump. I found that the trunk light was > staying on all the time and had to replace a dead battery. Shortly after > initial start up, I developed an IAC trouble and it looks like I have a pin > in the ECU wiring harness that is making a poor connection – fully seating > that wire in the connector has cleared the IAC trouble. **** > > ** ** > > I’ve been going thru the factory shop manual’s drive cycle to get the IM > readiness monitors to run, I only have 3 monitors to go – O2, CAT, and > EGR. My manual says to get each of these to run, to drive in mode 2. Mode > 2 is described as driving the car for 5 minutes any way you want, followed > by at least 60 seconds of steady speed driving between 50 and 60, with a > note that ECU speed may not match dash speed. **** > > ** ** > > I’ve driven about 200 miles with most of that at about 57 ECU speed and > still these three monitors have not tried to run. Has anyone else run into > this and are there any suggestions other than to just keep driving it?**** > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >
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