Got a question. I'm new to mercedes - found a 83 300SD - needs a lot of work - but my question - when I turn on the ignition, my oil pressure switch jumps to full pressure - is this normal - I have driven approx. 1,000 miles with no problems - no noises, no heating up. When the engine idles, it still reads max pressure, also there is a pressure gauge on the oil filter canister, but it doesn't show any oil pressure when running. baffled

from a post a couple days ago, it seems that in the SD's that those gadges go bad frequently and is a good idea to change....

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1983 Euro 240D 277K
2016 Mazda 6
Coming Soon, 2013 Mercedes E350 Bluetec
Formers:
2012- Mazda 3
2007 Outlander- complete pile
1995 E300 Diesel 208K
2007 VW Passat 2.0T 63K SOLD
2003 Jaguar X-type 3.0 Sport Sold 04/11 w/88K
2009 Lexus RX350 9061 miles. Sold 04/09
2008 Mitsubishi Lancer GTS:Totaled Sept.,09 @ 24,000
2003 Infiniti I35 58K Sold
1984 300 turbo diesel 222K

Your problem IS NOT the oil pressure gauge. Its either the oil pressure sender, or the associated wiring.

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]