Problem While on high traffic or Parked with car on

2000 MAZDA 323
115,000 MILES • 1.6L • 4 CYL • FWD • AUTOMATIC
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CETERRE
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Hi, when I drive my car on heavy traffic after 5-10 min it start to fail like its out of fuel until it completely shut down. Same happens when I'm parked with the car on.

This does not happens while on highways. If I let the car cool down for 5 minutes or so it will start normally (whit fans on to make it faster). My car is not overheating (according to meter on dashboard).

Car is filled with Coolant, I don't think secondary fan start working because according to meter , the car is not "hot". In fact the engine bay is not abnormally hot and the coolant is not boiling if I open the cap.
Aug 20, 2015 at 10:00 AM
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KHLOW2008
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Seems like the idling speed is too low and could be a fault with the IAC. Have the throttle body and IAC cleaned and retest.
Aug 20, 2015 at 10:04 AM
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Hi KHLow2008, and thanks for your answer, i dont think because the car is perfectly the first 5-10 min of heavy traffic. and even if stopped it will work normally with steady idle for 10 min if at night. When this happens if i crank the vehicle right after it shuts down it wont start. I need to let it cool for 5 min with the key on like when its hot.

Other reason why i dont think its the idle speed is: if im stopped with car on, when it start to fail i try to go for a drive, it start to jerk , if i dont get on speed fast (not lucky if im going uphill) it will shut down and i need to wait.
Aug 20, 2015 at 10:20 AM
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KHLOW2008
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Did you check for trouble codes?
Aug 20, 2015 at 10:26 AM