Warm idle problem

[Stretch]

I notice when the car first turns on, after a few cranks that is, and it's cold from not driving in awhile it idle for the most part, but once it warms up if I let off the gass completely or shift gears too long it'll dip way to in the revs and then die. Ideas why it would not hold idle when warm?
eric

 

[jazzsaxman1988]

vacuum leaks maybe?

 

[strbo32098]

I have the same problem, Im not sure whats wrong either.

 

[NATAN666]

i would guess a combination of problems. if you had a bad oxygen sensor it could cause your engine to idle high when cold. if you also had a boost leak, the idle would be too low. that would cause this exact phenomenon

 

[Joel W.]

Any codes? Code 51 can do that. imo

 

[jetjock]

if you had a bad oxygen sensor it could cause your engine to idle high when cold.

Say what??

 

[NATAN666]

on my other car, a bad oxygen sensor caused my idle to bee to high at cold because it was misreading the oxygen content/temperature of the engine... so it couldnt compensate for it being cold... if you had a boost/vacum leak along with that, it may drop the idle back to where it should be when its cold... but when its warm the vac leak will shine through,