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#1
08-20-2007, 09:18 PM
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stranded!!
I have been having a recent problem where the fuel pump I think(due to if I move around the fuel pump relay it stops) keeps running with a slight buzzing sound even after the car is off. This killed my battery ans left me stranded.
Any suggestions on a fix will help me greatly.
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1987 300E 
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#2
08-20-2007, 10:26 PM
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I would suspect the relay, not the pump.
__________________
Question Authority before it Questions you.
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#3
08-21-2007, 08:50 AM
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I second the relay.
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1989 300E 144K
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#4
08-21-2007, 10:45 AM
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Quite..if you have a piece of wire/paper clip you should be able to get the car up and running again if the relay is indeed done.
You need to jumper pins 7&8 and that will bring 12V to the pumps, ie, they will be on as long as that jumper is in there. Jonathan
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Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta
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#5
08-21-2007, 10:46 AM
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seeing as the relay is designed to be held in[operating]by what mercedes calls the "TD" signal that is put out by a running spark module,i would also agree.the only other way the relay pulls in is by terminal 50 which operates the starter,so unless the starter is operating at the same time? the fuel pump relay has to be the culprit.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#6
08-21-2007, 02:31 PM
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Quote:
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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century  OBK #55 1998 Lincoln Continental - Sold Max 1984 300TD 285,000 miles - Sold The Dee8gonator 1987 560SEC 196,000 miles - Sold Orgasmatron - 2006 CLS500 90,000 miles 2002 C320 Wagon 122,000 miles 2016 AMG GTS 12,000 miles
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#7
08-21-2007, 03:37 PM
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Yup..exactly.
Jonathan
__________________
Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta
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