My 2000 subaru impreza 2.5 rs is choking a lot, and when the dealer made diagnosis it poped 4 different possible problems: 1)throtle position censor 2) idle speed control 3) O2 censor 4) Fuel trim bank 1. I have no idea what it looks like and where it is located. I have conditions and people to be able to fix it myself. Maybe someone has a manual with pictures of parts or a good description of what it looks like and the location. I would greatly appreciate for any info to my e-mail domasg@netscape.net ......maybe some other suggestion are know....Thanks to whoever answers in advance.