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Hey guys, I had posted a few months ago about a serious drivability problem with a buddies 94. Formerly supercharged - now back to n/a with stock ECU. It goes very lean at any throttle setting above cruise. It's not quite lean enough to misfire, but it's off the scale on his NB O2 gauge. It goes lean in any gear, at virtually any RPM above 2000 or so - as soon as you give it any throttle to accelerate. I've done everything I can to diagnose it, and I'm coming up empty. verified fuel pressure - 35 idle and 45 WOT. Swapped ECU swapped fuel pump (verified pressure on both pumps) swapped O2 sensor swapped MAF allegedly swapped injectors (I didn't do it) It idles well, and doesn't appear to have a vacuum leak. We also tried driving it with unplugged TPS and/or unplugged O2, and the behavior didn't change at all. Does anyone have any other ideas? bad wiring harness? bad alignment between mercury and venus? We're really scratching our heads on this one, because the car really isn't very drivable. -Chuck |
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