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#1
04-10-2006, 05:16 PM
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92" 300E Oil Pressure
Hi,
I have a 92" 300E that when I start it cold the oil pressure gauge goes up to the number 3. After the car warms up it goes down to 0 and stays there. I am almost certain that it did this since I changed the oil. Before when the engine was hot and in idle, it would read 0, but if the RMP's went over 1000 it would climb to 2 or 3. I have opened the lid on the engine were you pour the oil and all the valves and everything inside is covered with oil so it has pressue....it's just not reading it!!!!!!! I did put some 10W 40 on the car. when I changed the oil......not that it should matter!!!!!"I think". 
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#2
04-10-2006, 07:12 PM
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Does it sound good running at 0-bar?
__________________
-Marty 1986 300E 220,000 miles+ transmission impossible (Now waiting under a bridge in order to become one) Reading your M103 duty cycle: http://www.peachparts.com/shopforum/831799-post13.html http://www.peachparts.com/shopforum/831807-post14.html
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#3
04-10-2006, 10:33 PM
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yeah it does, no lifter problem or nothing, really quiet engine
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#4
04-11-2006, 09:38 AM
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Classic case of pressure sending unit failure. BUT, have the pressure checked with an external gauge.
__________________
John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif
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#5
04-11-2006, 10:28 AM
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ok, is the pressure sending unit like the one on other cars....or is this one like $200.00....like everything else on this car!!!!!
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#6
04-11-2006, 01:17 PM
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$70.00
__________________
-Marty 1986 300E 220,000 miles+ transmission impossible (Now waiting under a bridge in order to become one) Reading your M103 duty cycle: http://www.peachparts.com/shopforum/831799-post13.html http://www.peachparts.com/shopforum/831807-post14.html
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#7
04-11-2006, 02:23 PM
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hahahahahaha.....70.00 I have a 2000 impala and it goes like for 20.00......damn Mercedes....hahahahahaha
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#8
04-11-2006, 03:05 PM
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Quote:
And....I think we have a troll in our presence.
__________________
2012 E350 2006 Callaway SC560
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#9
12-23-2008, 09:52 AM
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******** in Az has these sensors for $26.00. I have the same problem with gauge but once I replaced the unit it still does not move any ideas.
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#10
12-23-2008, 10:01 AM
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had the same problem on my 92 300E, 10w40, found new sensor on eBay 20.00 everything good. easy swap just under the filtre. good luck
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#11
12-23-2008, 11:09 AM
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Quote:
Falling to 0 at idle is indeed the classic sender failure.
__________________
-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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Linear Mode
