Thanks Big Evil,
I checked the TPS it seems to have some effect so It may not be the problem. Investigating this area - intake to the carby at least fixed the rough idle, did a lot of cleaning & then made seals properly airtight that weren't between air filter & carby.
When I disconnect the cable that plugs into the auto I have 3rd gear, reverse & N. When the cable is plugged in I have 1st, reverse & N. This makes me think there is not much wrong with the auto, unless the fault lies in whatever the cable plugs into in the auto up the side, if so it's off to the auto mechanic & big bills I suppose. Otherwise where does the cable go? computer? under the seat or bonnet? Is there anything else I can check or change? I've tried to use my manuals on CD again but they are no use.
The shift linkage itself seems to work, otherwise I wouldn't be able to select R,D,N. Could a faulty E,S,M (econ,sport,man) switch cause this prob?
The engine didn't overheat before just the auto & the 2nd time was because the dodgy auto mechanic in Bundaberg unplugged the cable & said I could safely drive home in 3rd. That time it blew a ton of auto fluid out which gave me a trail of smoke off the exhaust, when I went back he plugged it back in, the auto then decided to work again (for over 1000 kms & a few weeks).