1993 Oldsmobile Regency eratic idleing and noise

My car idles fine until it warms up and I put it in gear and move, then it speeds up to a very high idle that pulls it down the road like its oncriuse, but criuse isnt on. When you stop the engine idles very high rpms, and begins to have a banging sound comming from the engine like its out of time, sometime when it bangs it shakes and moves the car.I have to shut the key off. When you start it again it idles ok till you put it in gear again. Then you get the same thing
note--this all started when the check engine lite came on.I had it put on a engine analizer, and needed a new throttle position sensor, no other codes were shown, replaced it. The lite went out but it wouldnt run right. He said he had no idea what was wrong with it, and he couldnt fix it.
I took it to another mechanic which installed another throttle body and and tps. That when it started acting as I stated at the beginning of this post
IM sorry I dont have any mony to donate. Im 74 yrs old, retired, and at the moment finances are very bad, as IM sure you can see. Any info would be greatly appreciated, God bless and thank you:charlie




I took it to another mechanic, he said he put it on the anylizer and it showed no codes.