Thank You Trannyman.
I turned the car on today and let it run for 20 minutes. Then I shifted slowly through the gears Reverse works fine still and so does 1st and 2nd gear. Third gear and drive still do nothing.
Maybe this can help diagnose the problem. When I'm in reverse and when I put it in neutral the headlights and dashlights get dimmer and then when I move it to drive the lights come back to full brightness and the engine revs up to about 1000 rpms then settles back down, it does not do this from drive to 3rd gear.
Could this be electrical?