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Old 02-28-2003, 12:48 PM
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JimF JimF is offline
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,925
Mercedes specs that. . . . .

the oil pressure should follow the table below:

RPM ---------------- Oil Pres (bar) -------- Oil Pres (psi)
600 - 750 ------------ 0.3 - 1.5 --------------- 4.4 - 22.0
1000 ----------------- 0.7 - 3.0 -------------- 10.3 - 44.1
2000 ----------------- 1.6 - 5.0 -------------- 23.5 - 73.5
2500 ----------------- 2.0 - 5.5 -------------- 29.4 - 80.9
3000 ----------------- 2.5 - 5.5 -------------- 36.7 - 80.9
4000 ----------------- 2.7 - 5.5 -------------- 39.7 - 80.9
5000 ----------------- 2.8 - 5.5 -------------- 41.2 - 80.9

So as you can see, the oil pressure has a wide leeway!

The oil pressure gauge in the IC, has a 'microprosser' (more like a regulator) than controls the meters range on the high end. On the low end, there's a peg that stops the needle.

I suspect you "broke" the meter when you removed, fixed or replaced it. It should limit at 3 bar, since as you can see, the oil pressure can reach some pretty high values.
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Last edited by JimF; 03-02-2003 at 11:37 AM.
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