Fuel Pump relay MAS type failing....??

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When I jump pin 1 and 2 I ghet excellent flow fuel into a small container for good 30 seconds... then I install MAS relay (which has fuel pump relay inside) and only get trickle for 2 seconds...tried used spare....flows good for only 3 seconds.... is it possible both MAS relays defective.......or isthere other possible electrical vudu thing going on ??? TX

siquisiqui in San Diego CA

Apr 14, 2012

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RepairPal Certified shops can diagnose and repair your 1992 Mercedes-Benz 300TE. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Fuel Pump relay MAS type failing....??

What is your question?

siquisiqui in San Diego CA

Apr 14, 2012

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What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 1992 Mercedes-Benz 300TE. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.