When I start up my car It will idle right when cold. As soon as I get warmed up my idle will drop from 1000rpm to around 500 to 400rpm. The weird part is that while I'm cruising and I put it into neutral it will idle just as I set it, but when I come to a stop it will drop back down to around 500rpm. I checked for vacuum leaks but found none.Could I have fouled a plug while tuning that could cause this low idle?
thanks

 

bump, I too would like to know

 

bump

 

bizump

 

bump......i have the same prob

 

get it tuned. Alot of electronic parts fluctuate its value over time.

tuning usually helps. Set the target idle to a higher value

 

If the car is stock, what needs to be tuned? Can you adjust the idle from the throttle body ? (done it on Crx)