94 celica ST idle flucation, cant get the idle to be steady. Options

[rapid36]

Hi everyone my 94 celica ST has a idle fluctuation when im in gear and have the fans on. when the fans go off i idle at about 1k. normal idle in park with no fans or accessories on is about 1.5k which I know is a issue, I replaced the fuel filter, spark plugs and spark plug wires, o2 sensor, throttle body and TPS from another celica but I dont think I aligned the TPS correctly? Do you think this may the cause? If so does anyone know how to properly re adjust the TPS sensor onto the throttle body?

https://youtu.be/mmk4e4pkoo8

Im also getting a code 25 which says "The air/fuel ratio feedback compensation vlave or additive control valve continues at the upper (lean) or lower (rich) limit for a certain period of time." And noticing this I had another set of fuel injectors that was off my old celica which ran just fine and put those on so I dont think its the injectors. Any help is appreciated.

This post has been edited by rapid36: May 17, 2016 - 11:43 AM

[rapid36]

K new gaskets came in today and will be installing these today, hopefully this will fix my issue and resolve me check engine light and have everything run normally and my gas mileage will go back up. I will keep everyone updated on this issue. I am wanting to turn this and eventually get around 200 to 250hp, pretty far fetched but before I do any more performance mods or even think about going turbo I want to make sure the motor is operating just fine and normal before adding performance parts to it and having it act all weird and possibly cause more issues. Just trying to get a good base to work with before adding on.