Hey guys, need some help diagnosing a problem. My truck, 98 Chevrolet P/U with the 4.3 and manual transmission, has an idle problem. When coming to a stop or shifting gears, it doesn't want to idle down. If I push in the clutch or put it in neutral, it will stay at around 2000 rpm's until I come to a complete stop. Also while in gear, you can feel it pulling you around like cruise control when in town. It doesn't do it all the time, but quite a bit. Seems like it does it more when running the a/c. Last year I replaced the IAC and cleaned the mass airflow sensor trying to cure it, but no luck. Anything else I should look for? Any advice is much appreciated, thanks.