Aerostar runs when its cool but won't run when temp is above 60 degrees.New air temp sensor didn't help.why?

Question

When warm it sounds like it runs out of gas. let it cool off and after about 2 hours it starts and runs fine.Cold days I can drive it hundreds of miles with no problems at all.Motor never runs hot.Only seems to be affected by the outside air temp.

Plugs,wires,cap,rotor are all recently changed.The lady I got the van from said it has had this problem for well over a year.

Answer 1

There are many sensors on the typical modern automobile. In addition to an "air temperature sensor" in your fresh air intake ductwork, you have a "coolant temperature sensor". It tells your computer how cold or hot your engine is. What if the coolant sensor told your computer that your engine was cold when it was really hot? You need a competent shop technician to attach a scanner to your OBD-II diagnostic system and see if your air/ fuel ratio is proper for each engine operating condition.

Answer 2

When was the Spark Plug Wires changed?Heat Causes
Wires and Coil to break down.My guess