A quick question for all of you. My friend has an 86 Dolphin, 22re with A43D auto tranny. His tranny shifts all the way into Overdrive with no problem, but when pushing the overdrive button on the shifter on the steering wheel column to kick the tranny down to 3rd for instance, nothing happens. The tranny just stays in overdrive. So the button on the shifter is useless. Do you think this is a possible fuse issue, overdrive solenoid issue, or something going on with the overdrive button itself. If I remember correctly, no overdrive light ever comes on or off neither.