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  #1  
Old 02-28-2008, 10:21 PM
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What is Low oil pressure?

After getting the 190D up and running (from new nozzles) I got it up to operating temp (a little above 90c) and parked the car. The oil pressure gauge shows 1 bar at idle.

Is that to low? Is my oil pump going to go out soon. It has never done that before. The oil level is correct with a new filter and o-rings on the shaft.
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1985 190D 2.2 auto--gone
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  #2  
Old 02-28-2008, 10:26 PM
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not positive about that engine, but I think anything over 1 bar hot is good.
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Old 02-28-2008, 10:45 PM
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what oil is in there? how many miles on it?
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  #4  
Old 02-28-2008, 11:56 PM
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Approx 180,000 miles. Mobil delvac 1300 15-40. I think thats what it is called.

It does leak oil. I think from the pan, but I don't think that affects pressure, maybe.
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1985 190D 2.2 auto--gone
1975 240D 4-speed--storage
1985 500SEL--daily driver
1985 300TD--bad rust, soon to part out...
1982 300SD--waiting on engine from RD
1984 190E--storage
1996 Dodge 2500 Cummins--daily driver
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  #5  
Old 02-29-2008, 01:32 AM
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Sounds normal....also your sender that senses the oil pressure might be getting weak/failing. Mine read almost 0 at idle when warmed up before I replaced it. After, steady 2 bar at idle. So I would suspect the pressure sender first.

And always be sure to check the oil.
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  #6  
Old 02-29-2008, 02:59 AM
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My owners manual says that if the engine is good and hot, after a hard run, etc, anything down to 0.3 bar is acceptable at idle.

I've never seen one of these cars that didn't peg the gauge at road speed.
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  #7  
Old 02-29-2008, 09:51 AM
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That's what mine does, too, pegs on acceleration.
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