Mercedes Benz repair: fuel pump relay switch, mercedes benz 190e, fuel pump relay

Question
Hi..can you plz tell me where it is located and how to install . I have a 1992 190 e 2.3 and the mechanic wants $360 for the part and $35.00 to install it/ also should I replace anything else with it at the same time.. Do you sell the part? thank you. note we changed the catalytic converter and the fuel pumps are ok... the car will stall sometimes while running on the freeway. it has 110.000.miles on it..thank you

Answer
The OVP and Fuel Pump Relay are located behind a plastic shield between the battery and bulkhead.
The OVP (Over Voltage Protection relay) is there to protect the Fuel Pump relay from excessive voltage.
The fuel pump relay is roughly the size of a pack of cigarettes.

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1992 Mercedes Benz 190E 2.3
Part: Fuel Pump Relay
           Product   Brand   Availability Our Price
P2037-34082 Fuel Pump Relay Germany IN STOCK $156.51  
P2037-34082 Fuel Pump Relay IN STOCK $152.35  
  
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PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1992 Mercedes Benz 190E 2.3
Part: Overload Relay
 Note:  
Aluminum cover with bracket : contains (2) 10 amp ATC fuses on top .     
P2056-18126 Overload Relay Germany IN STOCK $74.59  

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