hi

two week ago, i went to my local shop since my engine light came on, paid 50$ to diagnose it and they told me to replace the whole throttle body each i did , the engine light went off, car runs fine


last week, the engine light went back on, i couldnt afford to do diagnose it, so i went to aamco to do free engine light, they told me i have problem with my idle air control system and it will cost me 260$ to diagostic plus parts?

as of now engine light still on, the car runs fine, would like to know if anyone here can help what to problem might be

thanks