Ford Repair: 1995 ford taurus 3.8, powertrain control, turbine fuel

Question
Here's my issue ,with this car

1) stalls while driving
2) will not start after stalling
3) no spark
4) after awhile sitting will start
5) hard to figure out it does not do this all the time
6) some days it works perfect

here are the items I have replaced

1) fuel pump
2) safety fuel switch in trunk
3) fuel filter
4) coil
5) ignition control moduel

things that I have checked

1) air flow mod
2) wiring
3) ecu / computer
4) ignition

now I am out of ideas ,looking for any one can help with this problem .don't like to get standed on the side of the road on a hot day .can any one help wiyh any idea to help .been to a shop ,they seem ,not to find any issues with the car getting to be costly .WHAT CAN IT BE PLEASE HELP

THANK YOU
this is a issue that does not happen all the time it can you help  

Answer
A reduced power, hesitation, stalling at low vehicle speed, idling and/or a no start condition may occur on some vehicles in hot ambient temperatures and/or high altitudes. In addition, a no start may result while the engine is still hot and the vehicle has been parked for a short period. A stall may also occur when moving the vehicle from idle. This may be caused by a lack of vapor ports in the fuel pump, resulting in a vapor lock condition or internal high wear of the fuel pump components due to tank contaminants.

ACTION:
Perform normal diagnostic routines as described in the appropriate year Powertrain Control/Emissions Diagnosis Manual (PC/ED). If the condition still exists after all diagnostics are followed, replace the fuel pump with a new turbine fuel pump. Refer to the following Part Application Chart for correct part usage. Also, replace in-line fuel filter with a new filter (E7DZ-9155-A). The new turbine fuel pump will reduce the possibility of vapor lock in high ambient temperatures. Refer to the appropriate model/year Service Manual for removal and installation procedures.


This is the only thing I can think of at this point. I know you replaced the pump but is it an aftermarket pump. Hope this helps Thanks Tony