Car stalls after warm on hot day after a few stops. will stall when stopping at intersections, and when taking foot off the gas going down hills.

Sounds like about the right distance for the system to go into close loop.Use a good scan tool to check parameters of the system to locate the failing sensor/item when it stalls.

Start with the throttle body. I use brake clean and a toothbrush. Clean the plate and were it sits. Wouldn't hurt to spray down the MAF sensor, if it has one. Once you do it, it will take a few seconds to start. Once started, rev it up and spray inside the throttle. Keep it running. Most times this is a $4 fix.

POSTED 2 TIME, BUT THIS ONE LONGER. read other post answer now.?
your engines stalls! if engine stalls so does car.
BUT DOES IT RESTART EASY,??????
Does the restart, starter sound fast and normal or weak
can you prevent the stall with fast right foot action?
ever get a tuneup in last decade?

most stalls are caused by 50 things.
top of list is MISFIRING.

http://jeepdied.com/Misfire101.html

if it is lacking power and stalls at stops, it may be a bad fuel filter. when car is off, the dirt inside the filter drops to the bottom. but as soon as its started it rises up. that is what usually causes a car to stall. when stopped. if the car bogs down on hills and it was fine before, then its the fuel filter. there are many things to make a car stall at stops, but check the fuel filter first then go from there if problem still exists. and check all vacuum lines in engine compartment. there may be a leak. clean throttle body out if needed. good-day! check and or replace the Idle air control. (IAC) it may be sticking.

is the check engine lite on need codes could be anything from fuel issues to electrical issues

sounds like you need to replace the temp sensor

Check out the catalytic converter, might be plugged up. I have seen some cars that will run fine, and like someone threw a switch the car acted like yours, no power, would not rev and died. Later when cold they would be OK for a while then just get worse and worse.

Common issue at the shop (i'm a ford technician), here is what I do to correct it.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

i would have your idle air control solenoid replaced and also check for vacuum leaks.thank for the question

If the car actually ran out of gas, it could be air trapped in the fuel lines. it may take a few minutes for all the air to purge from the gas lines. The car may run rough during the process. The car should be fine after running a few minutes.