W116, BENZ AID - COMMON QUESTIONS AND ANSWERS

Remove marine bulb style hand pump?

Installed the auxillary fuel pump and it works greats. My question: I also have a marine style bulb hand pump installed, when I bypassed the stock hand primer pump last year. Should I remove it? Can it handle the pressure the auxillary pump produces? The bulb pump seems pretty plump but it's holding, no leaks. Will it eventually burst or can I just leave it alone for now? I'm planning on a 700 mile road trip next weekend and would like to wait to replace it if I can. I've ran about 150 miles since I've installed the auxillary fuel pump and no problems. Thanks, Keith

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'87 300DT with coolant, oil pressure, and fuel guage malfunction

Hi: I have an '87 300DT with the 124 chassis. Has been running fine. The problem: the gauges for the coolant, oil pressure, and fuel all dropped to zero. The combination relay (part 201 821 00 47) is vibrating and making noise. Replaced the relay with the identical part with no improvement. Fuses are all good. I am about to test the sender units for the above guages. Any ideas? Thanks much, Pat

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Taxonomy upgrade extras

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