Hey guy I have a low idle after the car been driven for about an hour.

I've read everything I could about idles, iacv, fits, and idle screw.

On cold start it starts fine and it idles where it needs to b. it idles on cold start at 1400-1500, then after it warms on it'll idle at 700-800rpm. I'll drive for about an hour then when I shift it in neutral (while coasting) the rpm will slowly drop ( like my throttle is stuck open a little) and idle at 1300 (while coasting in neutral). Then when I come to a stop the idle just drops down to like 400-500rpm ( yea I know 500rpm is normal) but it feels like its goin to shut off but doesn't, and if I let it sit and idle a minute then the idle will kick back up to 700-800rpm where it's suppose to b.

My ignition timing is set a 16* btc. Other then that the car drives fine and strong no hesitation or bogging etc etc..

Thanks in advance

 

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