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I bought this 2004 3.9 mustang automatic about a month ago. When I bought it, the car would have trouble stopping. When I slowed down to a stop it would jump up in rpm’s and try to accelerate before coming to a stop. Recently the car had started revving itself up to 3500-4000 in park and staying there. When thrown in drive or reverse the car starts to accelerate on its own and I’m barely able to stop it. Ran the codes and I’m getting P0161, P0135, P0141, P0155 (all O2 sensors), P0507, P0443, P0446, and P0403. I have already replaced the IAC and cleaned the throttle body after purchasing the car. I’m hoping one or two things are causing the others to throw codes because I’m not trying to replace every single sensor on this thing right away. Anybody had anything similar
 
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