low idle when cold

just bought my 94 trans am a few weeks ago and ive been noticing that when i go out to start it in the morning the idle doesn't jump up and run a little higher (when cold) then come down to normal idle speed (700 rpm's) it just starts and idles at 500 to 600 rpm's then when warms up idles at 700 rpm's. would this be a temp sensor, computer, or something i'm missing. any ideas.. thanks for your opinion. dennis

ttt :eek2:

If it does not have any codes showing(ses) or rough idle I wouldn't be worried about it. You might pm frost (member) and see what he thinks.