KA24DE bouncing and high idle

[xxleadxheadxx]

i bought the car about a month ago, the idle was around 1500 when i bought it, drove it for a week or so and the idle went down to normal <1000 then it slowly started raising, not only would it raise but it would jump from anywhere between 3000 for a few seconds then randomly drop to like 300 and bounce back to 1000 then do it all over i replaced my tps, it was replaced properly and the idle went down to what its supposed to for a week or 2 then randomly jumped back up, it even cuts out on me sometimes like its getting too much or not enough fuel. would my extremely cool temp have anything to do with this also? i have no ac or heater hoses or components its just a shorter circuit within my engine