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AFM744 AFM744 is offline
Cynical Misanthrope
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Join Date: Dec 2001
Location: Campbell, CA
Posts: 382
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Keeping the info posted as I go...
Last night I intensively inspected the TPS and tested with an ohmmeter. I then pulled the driver seat and verified the same signals to the O2 module. So I put it all back together, unplugged the O2 sensor then drove it to work this morning.
After 15min driving I pulled off, it was idling at 10:1 afr (and I smell like it), but it sure was more happy to rev!!! I adjusted the 3mm until I saw 13.4:1 and went to work. So in my understanding, if the CIS was trying to idle at 10:1 then the O2 and frequency valve were working very hard to compensate to get to lambda. Lunchtime drive with the idle CO set may reveal more, but I'm most curious to see what happens when I go closed-loop again (and my eyes stop watering).
X-1, AFM744, Jon, '92 C2 Turbo
JE 8:1 pistons, 964 cams, 38mm intakes ported/polished/twinplugged, ARP hardware, B&B headers/exhaust, 355whp. Full-blown GT35R 3.2 intake EFI pending...
Where my misspent time and money is currently going.
Old 10-26-2007, 08:25 AM
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