This has happened twice now it lost power as I was turning in a parking lot Wente at the gas is spidered and died through my car in park tried to start it it would not start I tried again to start it while pressing on the gas and it started but with a lot of shaking I had to give it a lot of gas. I checked the codes p1684 is the newest one the other is p0456 a small evaporate leak. What is happening? I just changed the air filter. I'm waiting to buy a new IAC till we clean the throttle body.

 

Search for P0456; there are lots of threads about it. You could also start a new thread about your issue if so inclined.