Wont start in hot weather

[joshsmommy642]

I have a 95 ford explorer eddie bauer.Last summer I had the problem that on hot days after driving to anywhere the explorer would not start after being shut off.I would have to let it sit for 45 minutes or so and it would start fine.Ive taken it to my mechanic but by the time its towed there it'll start and he says there arent any codes.This is very annoying with the fact that I usually have two small kids in tow,sitting through the weather waiting is a mess.Any ideas on what it may be

 

[V8BoatBuilder]

When it won't start, does the starter motor turn over?

If it doesn't:
1) On older vehicles, starter motors and thier attached solenoids can "heat-soak," and cease to function. A new starter assembly should cure the problem.

2) You also might have a fault in the temperature sensing equipment, either the Intake Air Sensor, or the engine coolant sensor.

Start with the obvious (info on all of these suggestions can be found by searchig the forum)
1) Your Idle Air Controller may be acting up as well.
2) Fuel Filter could be dirty.
3) Mass Airflow Sensor could be dirty.
4) ignition wires could be cracked/old.
5) Spark plugs?

 

[marragtop]

Also, when it won't start, try and find out if it's fuel related. When you turn the key to the ON position (but don't crank), you should hear the fuel pump run for a couple of seconds. If you don't hear that, then it could be the fuel pump or fuel pump relay.

 

[barnieman]

Disconnect and connect your crankshaft position sensor (bottom - front of engine), to make sure that connection is ok.

 

[TSTONE]

If the problem is that it won't crank or slow cranks when hot it could be an internally corroded battery cable - they can also be heat sensitive.