Hello again guys, Has anyone experienced a case in an auto 300ZX where the transmission will change down into 3rd for no apparent reason? What generally happens is this: I will be happily going along at 30 or 40 mph and I will be in 4th gear and the engine will be happily purring along. Then I will feel the car change down a gear when there is no real need to and the car will obviously rev higher for the stronger gear it is in. Only if I ease off the gas a bit will it then return to 4th gear again. It happens on the motorway as well. Any idea why this is happening? Is it a sensor associated with how far the throttle pedal is down? Started happening the last few weeks.