Idle adjustment location

Can you get a picture of the carburetor? I am showing that the 1993 has a throttle body and not a carb. Sometimes they look the same but if you have a throttle body then the idle is controlled through the idle control valve by they PCM.

Here is the detail from the manual. If you are having an issue here you may need to clean the throttle body as it states. Here is a guide to help with that:

https://www.2carpros.com/articles/throttle-actuator-service