DelsolVted

my 93 del sol idles about 800 rpms in park and about 600 650 in gear. when i first got the car everything was ok. i adjusted the throttle cable cuz it was loose. i cleaned my fifv and it quit the up and down idle. when im in gear my oil press drops down to around 10 to 12 psi. i am auto so idk if this is correct for mt car or not. at idle im around 18 to 22 psi idleing and depends how hot it is outside. cooler weather it idles around 20 22psi. anything i should check or adjust.? thanks james