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#1
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Signs of oil pump failure...
I have a M104, that has a wacky oil gauge (i know that i need to replace the oil pressure switch) anyways is there any signs that the oil pump gives when its about to fail (sound, engine performance problems...) if so what is it... What oil pump method dose is use, gear pump, eletrict pump???.
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Current Garage 2008 Mercedes GL320 CDI 188k mi Repair/Work in progress 1994 S350 160k mi Garage Queen & prepping for repairs 2005 E320 CDI 203k mi Healthy & Daily Driver 1994 S350 357k mi Retried as parts car 1984 300TD 214k mi Blown OM617 Poss OM603 Swap?? Sold 1987 300SDL 200K+ 1994 S320 181K mi 2008 E320 Bluetec 127k mi 1999 S420 130K mi 1980 240D 360k mi 15+ Others that has come, stay and gone GONE, BUT NOT FORGOTTEN ![]() 1995 E320 SE 220k mi 1984 300SD 350k mi |
#2
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The oil pump is chain driven, change your oil sending unit and it will be fine.
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#3
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I agree.
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-diesel is not just a fuel, its a way of life- ![]() '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#4
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so the chances of that oil pump of failing is slim??? It looks like a tight fit to get the to the oil pressure sender out and in
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Current Garage 2008 Mercedes GL320 CDI 188k mi Repair/Work in progress 1994 S350 160k mi Garage Queen & prepping for repairs 2005 E320 CDI 203k mi Healthy & Daily Driver 1994 S350 357k mi Retried as parts car 1984 300TD 214k mi Blown OM617 Poss OM603 Swap?? Sold 1987 300SDL 200K+ 1994 S320 181K mi 2008 E320 Bluetec 127k mi 1999 S420 130K mi 1980 240D 360k mi 15+ Others that has come, stay and gone GONE, BUT NOT FORGOTTEN ![]() 1995 E320 SE 220k mi 1984 300SD 350k mi |
#5
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Oil pump failure is extremely rare. There's a very good chance it's either the sending unit or problems with the lower engine harness.
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#6
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The entire wireharness has been replaced by mercedes dealership, i guess i have to find a way to remove that sender, do you remove the sender under the car, it looks like that's the only way am i right...
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Current Garage 2008 Mercedes GL320 CDI 188k mi Repair/Work in progress 1994 S350 160k mi Garage Queen & prepping for repairs 2005 E320 CDI 203k mi Healthy & Daily Driver 1994 S350 357k mi Retried as parts car 1984 300TD 214k mi Blown OM617 Poss OM603 Swap?? Sold 1987 300SDL 200K+ 1994 S320 181K mi 2008 E320 Bluetec 127k mi 1999 S420 130K mi 1980 240D 360k mi 15+ Others that has come, stay and gone GONE, BUT NOT FORGOTTEN ![]() 1995 E320 SE 220k mi 1984 300SD 350k mi |
#7
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What we're talking about here is a second harness. If they replaced only the engine harness there's a pretty good chance your lower harness is original and a suspect.
Last edited by deanyel; 04-15-2009 at 11:17 AM. |
#8
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Yes, under the car is way easier.
__________________
-diesel is not just a fuel, its a way of life- ![]() '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
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