Today while driving down the road, I noticed that my car was running at very low rmp's. Normally when driving 45 mph, without my foot on the gas, it sits around 1700-1800 rmp's, today it was around 600-700. When I stopped at a stoplight, the rpm's went to 0. The car is running smooth and there is no rough idle issues. Anyone know a reason it could be doing this and how do i fix it? I also know that there is no issues with the IAC valve and throttle body, nor any electrical issues because i had all of that stuff replaced within the past 6000 miles.

 

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