Flashing CEL '98 986
I just changed my oil/filter (15w-50 warm SoCal climate) and my spark plugs. The car started up nicely, but after idling for a while, the CEL light came on. This has happened before, so I assumed it was a cold misfire or a loose gas or oil cap. I went for a drive, and noticed less power, less of a smooth sound (engine was not quite warmed up). I drove about 300 yards and the CEL started flashing. PANIC! I parked, scoured service manual, then restarted car. Same events. Solid CEL when parked, flashing at about 30mph. Then the car reached operating temperature and started running smoother and the CEL went solid (not flashing). I'm completely stumped. (though i think my thermostat needs replacing, as it takes 15 mins to warm up).
help? anyone?
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