I have a 92SE with high mileage (205k). The car has had no tranny problems to date. Last week my first problem began to arise. I am driving at highway speeds and it drops down a gear (or the overdrive cuts out). The AT selector switch show the "P" power range button blinking when this happens even thought the "C" comfort position is selected and lit up as well! This only happens a couple of seconds and does not seem to depend on engine speed or load on the transmission. Any ideas what I am looking at here?