yeah wierd..ecu problem?
anyways i have a auto 04.5 prem gas all its life no major issues 44 thousand miles completely stock. recently i started noticing ONLY at warm start ups my idle would dip all the way to 0 or very close to it and come back up..and at times completely stalling. On cold start ups i have no problem whatsoever. ive changed PCV hoses and (attempted) to reset the ecu and idle relearn steps..to no avail i still get idle dips at warm start ups.
few weeks back i plugged up a utec and it stubled and would not crank..i dont think this is an issue but i want to mention it.

so any ideas? my next step is to clean the TB but if this is only occurring on warm start ups would that be the issue?

here is a vid..

 

i had something really similar to this, my RPM idle setting had been messed up because i moved the throttle plate and screwed the setting. took it to the dealer, paid a ridiculous amount, and it was fixed. no issues afterwards.

i had the exact same problem though, cold starts fine, warm starts it would start normal, RPMs would drop really low, and sometimes so low that the car would stall.

 

reset idle and accelerator position, the instructions are somewhere on the forum. Same thing happened to me, 10 minute fix.

 

i guess i could try again even though i tried nearly 10 times (not knowing whether i did it properly or not)

 

do you by chance have papers from your dealer visit? id like to know what they did..im trying to stay away from dealer unless its out of my reach as far as fixes

 

I don't have them anymore actually. but i know what they did. Idle position reset, then set to correct setting. that's all. they charge you for 1 hour of labor, which is 120$ here. it only took them about 30 minutes though. silly..

 

I had this problem as well. I cleaned my re-charged my K & N filter and clean the throttle body. Then did the ecu reset procedure and it idles around 600 rpms now; which is normal.