im in the process of searching right now. my s13 sr20det wont idle some of the time, what i mean exactly is when i come to a stop, the rpms just fall and dont stop and stall sometimes. when cold starts right up and idles, once warm drops back down to idle around 850ish. then after i drive it for a short time, i come to a stop sign and it falls to like 100 200 rpms and sometimes dies sometimes struggles to get back up to idle. seems like it pulls hard no misfire underload. sometimes when i get done driving ill pull it into the garage and it seems like it is missing, sometimes rare occasion. any help is appreciated. has new iacv replaced like 6 months ago, problem started about a month ago, seems to be getting worse

 

any ideas?