[oldman59]

How many miles is on the car? If it is high mileage then your engine bearings may be getting worn causing a lower oil pressure at idle. Oil lights are good but go off at a very low pressure usally. Try having mechanic install temporary pressure gauge in oil sending unit hole to check pressure for sure. could be faulty oil sending unit (sensor). Mine does same thing. Good mechanic will steer you to solving problem. Hope this helps. unit is on back side of motor.