I have an issue with a 1993 Ford Tempo. It is owned by a auto parts store and is used for deliveries so it gets a lot of use from day to day. Several different mechanics have looked at it and no one can figure out exactly whats wrong.
The issue is this - The car stalls out at about 2 or 3 oclock everyday after being used for deliveries starting at 9 oclock. It will stall while idling in park, while stopped in drive, while coasting/accelerating in drive. The temperature is normal. Is will start to idle and run very rough and the car is less responsive to the gas pedal about 10 minutes before it stalls. Once it stalls, if it is allowed to sit for about half an hour it will start and run fine for a little longer but eventually stall again. After it sits for a few hours it is fine to run for a few hours again. If you try to start it right after it stalls the first time the engine will turn over but stall out again in a few seconds, if you keep trying to restart it it will eventually not even crank. Also it will occasionally stall like this/run rough in the first 10-20 minutes of driving.
I suspect a fuel issue but i dont know any help would be appreciated.