For Unexplainable Reasons, myself and the OP have had to adjust the Cold Start Enrichment Values.. The OP needed to Add Fuel for his machine to Start Properly, I had to pull a Tapering Amount that leads to Half of the Fuel Enrichment for Temps Starting Below 40 Deg F. It would start fine Hot Days and Cool Nights.. But Really Cold Nights were a Challenge and I struggled to get it running and warm. Mine would Foul the Plugs and Stumble and Die.. the OPs machine would not start without Starting Fluid, so he added fuel on Cold Start. The OP was able to contact a Tuner to get new Values and Locations, and posted this post to learn more about the Various Bits in the ECU ROM. Ends up he lives about an Hour from me. Zs tend to run in Groups for Safety and Parts Availability. :) Myself I've changed the On/Off Temps snd speeds of the Electric Fan ( Na ) and by talking to Zromteck2000, I was able to get some values to experiment with, and the Location in ROM to put them, and I was able to get my O2 Sensors go come alive better at Idle. My Last CA Smog Tailpipe Test, with 4 Year Old California Legal Cat, had my Hcs at 6 for Idle, and 8 at Speed.. Not on Rollers.. FYI.. Cj
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