Mercedes Benz repair: 300E STOPPING, mercedes benz 300e, crank pulley

Question
MY CAR IS A 300E MERCEDES 1987 NOT A DIESEL.THE CAR  JUST STARTED DOING THIS, WHILE RUNNIG WILL JUST QUIT
WHEN I TRY TO RE-START  THE MOTOR IT TAKES ABOUT 3 TO 5 ATTEMPTS THAN STARTS AND RUNS FINE? IT DOES THIS WHILE DRIVING OR IDLE. IS IT A FUEL PUMP GOING  BAD? THE FUEL PUMP RELAY WAS REPLACED 8 MONTHS AGO , WHILE THE CAR WAS RUNNING I REMOVED THE FUEL PUMP RELAY TO SEE IF THE CAR WOULD DIE OUT IT DID NOT SO  DO YOU THINK IT THE PUMP OR SOMTHING ELSE? THE CAR HAS 180.000 MILES AND I AM THE SECOND OWNER.  

Answer
Best guess of possible issues:

Overload Relay
Voltage Regulator spiking?
Reference Sensor Engine Speed, Located at front crank pulley.
Reference Sensor, crank position: @ Flywheel
Engine Temp. Sensor = for computer
Fuel Filter
Fuel Pump


PART NUMBER SEARCH RESULTS WITH PRICES

Vehicle 1987 Mercedes Benz 300E
Part: Overload Relay
 Note:  
 Year: -1987
P2056-18124 Overload Relay IN STOCK $67.52  

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...

Vehicle: 1987 Mercedes Benz 300E
Part: Reference Sensor
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   Reference Sensor
Speed
Located at front crank pulley. Optional with 002 153 22 28.      
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   Reference Sensor
Position : @ Flywheel

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...

Vehicle: 1987 Mercedes Benz 300E
Part: Fuel Pump
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   Fuel Pump
2 per car
  Chassis: A-368937-
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   Fuel Pump
0 580 254 942
  Chassis: -A-368936

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...


Vehicle: 1987 Mercedes Benz 300E
Part: Fuel Filter
--------------------------------------------
   Fuel Filter

Optional 002 477 13 01 can still be used on early models with single fuel pump. New filter 002 477 44 01 is designed for tandem pumps where greater volume and dampening effect is needed.      
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   Fuel Filter
Optional with 002 477 17 01 .  

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PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1987 Mercedes Benz 300E
Part: Voltage Regulator

F4010-39368 Voltage Regulator Bosch IN STOCK $33.26  

F4010-108169 Voltage Regulator Germany IN STOCK $24.68  
  
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1987 Mercedes Benz 300E
Part: Engine Temp. Sensor
 Note:  105/115 degrees
3 pole terminals : color code green : 105/115 Degrees     
 Engine: -A-079037
G5045-12325 Engine Temp. Sensor Behr IN STOCK $53.63  
  
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...