Mercedes Benz repair: mercedes benz 190 E, mercedes benz 190e, 1987 mercedes benz 190e

Question
Hi ,i own a 87 mercedes benz 190 E 2.3 4 cyl. .The problems that i had is that every time i start the car i had to crank the engine with the gas pedal full  depressed ,for about 20 sec. in order to fire the engine,after that the car will drive fine ,once in a while it stalls,but will restart after sitting for couple minutes
i already changed OVP relay,sparkplugs,wires,distributor cap & rotor,fuel filter,air filter,cold start valve.
Now for the last couple of days the car won't start at all,the irony now is that the car fires up right away without the gas pedal but it dies in 2 sec.could be fuel pump relay?  pls help   thank you

Answer
That does sound like a bad fuel pump relay.

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1987 Mercedes Benz 190E 2.3
Part: Fuel Pump Relay
 Note:  
P2037-34082 Fuel Pump Relay Germany IN STOCK $154.33  
  
P2037-34082 Fuel Pump Relay IN STOCK $152.78  

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