I have an 04 rubicon its awsome runs great but......at idle it seems like the engine misses sometimes the rmp drops alittle .when the a/c is on the rpms are in normal range. on take off on highway and while driving the jeep is great ??? problem only on idle. any ideas I also used sprays and fuel cleaners??
I have the exact same thing going on . I thought i had it fixed, but its back. I did change my iac and tps and top 2 o2 sensors, but its the same ,and this is a brand new engine, so i'm thinking maybe coil pack or injecters. I will keep you posted.