OK, after many suggestions (O2 sensor, thermostats, other wiring, etc) and much checking (O2 seems OK) the thermostat temp sensor (the blue one on the front left, heat sens #II-?) may be the culprit. When the engine get warm and starts running crappy I unplug it and it starts to run just peachy. Now, it runs much better and doesn't stall out but it won't drive with much of a load (slight up hill). So, do I just replace this sensor or might it yet be something else that I haven't investigated that the new info points to? PLease respond ASAP and thanks to all who have. Eric |
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