Hey guys and gals,
My battery died a few days ago so I replace a new one, when I started
the car I noticed my idle is really low its at 300rpm sometime the engine would die on me. I drove my car for at least 30 minutes its still running low idle. I
reset the computer by disconnecting the battery then run it again still no luck. Funny is there is no error code showing also when I turn on the air condition the idle goes up to near 1000rpm but when I turn off the air condition the idle goes down to 300rpm. what give guys anybody have the same problem and how did you fix....help

 

What motor do you have? Year? The pcm may take some time to reset and relearn everything, so it may just be a matter of driving around to get it going right again.