My '99 has 88.6k on it and in since I have had it it's had an idle problem. On occassion it will idle too low and wont want to stay running. After i get it going and run it for a while, the next start idles really high. It seems to come and go and is ussually more frequent on hotter days.

Any body else had this trouble? Any fix ideas? Thought I would put it out there before I drop some coin on a diagnostic...