Honda Repair: Stalling, vacuum leak, honda civic ex sedan

Question
Hi, I recently bought a 2000 Honda Civic EX sedan about 2 months ago, and it was running great during the winter, but just recently, it has started stalling on me now that it's warmer, and it's an automatic.  It first stalled on me when I was at a stop light, and when it turned green, I went to hit the gas, but the car had stalled while I was sitting there.  No check engine light or any light for that matter lit up.  Exactly a week later, last weekend, it stalled on me in a parkinglot as I was pulling into a parking space, again, no dash lights.  And today, again, I was pulling into a parking space and it stalled.  It almost seems as if the car is too comfortable after it warms up because when it's in drive or reverse, its RPM is only at about 200.  But there's a line there on the tack so I'm not sure if it is supposed to idle there.  I've brought it to Honda after it stalled the first time, and they didn't find anything.  If I bring it back, they are going to charge me $75 plus tax just to look at it, and another body shop is going to charge $100 just to look at it.  So I hope you can give me some pointers to problematic areas that might be causing this.  Thanks a lot.  

Answer
Chris:
Your RPM's are down too low, you should be at about 700 to 800 RPM's. It is very difficult to diagnosis a problem unless you can make the car repeat the problem. Does the car start up again right away after the stall? You need to determine if it is fuel or spark related. The other thing you may have is a vacuum leak. If it is consistently idling low, once you fix that problem I think your stalling problem will be solved, this is where I would start.
Sorry I can't be of more help. Let me know any other info on what you have noticed and I will try to help you more.
Bill