My 89 Cherokee Laredo idles at 1500 rpms when I put it in park. I replaced my map sensor, tps, iac, egr valve, O2 sensor, spark plugs, fuel injectors, and I can't find any leaks. Any ideas on what could be causing the high idle???? Thanks!

 

I would think TPS or vacuum leak, below is a link to a similar post, skip down to the last post at the bottom. That guy had eliminated vac leaks, like you I guess from your leak comment. Throw a tester on the TPS.

https://www.cherokeeforum.com/f2/high-idle-park-35497/