99 TJ - fast idle with AC on
I have 99 TJ Sport (4.0) with AC. I live in Florida so it's toasty right now. When I first start the engine, it idles and drives fine and continues to do so for about 10 minutes with the AC on. After a while, she'll start idling about 1300 RPM at a light with the AC on. If I turn the AC off, the idle will come down to about 800. It's just strange because sometimes if I leave the AC on, have it in first and start letting out the clutch like I was going to stall it - it will nearly stall. I push the clutch back in and it then might idle fine again for a while. I have fully cleaned the TB and IAC by removing them and really cleaning them out. I normally do this as routine maintenance. I'm thinking vacuum leak but I'm not sure. Any thoughts on where next to look?