seems like since the weather got colder my car isnt idleing quite right. when i start the car it cranks right up, althought twice it has stalled within the first 5 seconds or so after i start it. when driving the car, after you release the throttle and let the rpms drop to idle, it drops to about 600 rpms and the car shakes a little before it smooths out. once it smooths out, it idles around 900 rpm. i have had older cars that were like this before, but i am a little surprised that an 03 with 11k miles does it. does it sound like something i should mention to honda, or should i just live with it?

 

My 2002 with 54K does the same thing.

 

Normal? Yes and no.
It's normal in that many S2000 will do this whenever there is a significant change in climatic conditions, general when transitioning from fall to winter. It's normal in that the ECU might need some time (several cold start episodes) to "learn" to compensate and most cars will.
It's not normal if it continues and the ECU doesn't seem to ever learn. In this case, you need to look at a possible MAP issue or an Idle Air Control issue. To eliminate the MAP thing, do the "MAP whack" and ECU reset. IAC system is a bit harder to tell.

 

thanks, ill run it by honda and see what they think.

 

Mine does the same thing but I think my situation is a little different. My car has been garaged since October and the battery is pretty much dead. A few weeks ago, I gave my car a jump and let is idle for a good 5 minutes. As I went to park it back in my garage, the idle would drop to 100-200rpm when I would let off the throttle. I remember xviper mentioning that it is a the ECU learning in the colder climate so I never gave it any gas to bring the idle up. The car eventually died and never started again. Now I'm not sure if my battery is toast or if it has a hard time holding a charge since it's pretty cold outside. (-6 degree C)

 

[QUOTE=MIC,Jan 20 2005, 01:12 PM] Mine does the same thing but I think my situation is a little different.

 

my MY04 did this a few times.....odd