So I have already dealt with the 3.0L high idle issues before and they disappeared. Now it is doing it again but only when I have been driving for about 15-20 minutes with the a/c on. When it idles high my a/c does not work. Warm air will start to blow, but if I get the rpms to 4 grand or so it will go back to normal idle and my a/c will kick on. Ive replaced every part that could cause high idle...I thought. So maybe a vacuem leak? Please help with any suggestions you may have.
1998 2wd XLT xcab Ranger 3.0L V6
-3" spindle lift w/blocks in the rear
-31" Toyo A/Ts on stock 15x7 rims
-Flowmaster 40 custom exhaust