I've been thru this - '91 300-SEL.

Car started fine in the morning - then after 10-15 miles of driving stalleds/died.

Turned out to be a bad fuel pump.

While replacing that - I changed out everything related to fuel near the pump. Accumulator - hoses - filter - tank screen - etc.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

what type of Fuel relay does a 91 -126 have ? A combined unit for fuel and AC?

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Yep - controls 6 or 7 circuits - lots on info in the archives here.

Used in 1990 - 1991 300-SELs. Not sure what years used in W124 and other MBs that featured the M103 motor.

Here's what it looks like:


http://catalog.peachparts.com/ShopByVehicle.epc?q=1991-Mercedes--Benz-300sel-Body--Electrical&yearid=1991%40%401991&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6223%3AED%7C10000012%3AMBC%7C1515%40%40300SEL&catid=241959%40%40Body+Electrical&subcatid=242017@@MAS+Control+Unit&mode=PD

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"