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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
Posts: 2,697
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OPRV valve spring tired?
Mine hits 5 bar at cold startup and I get about 1 bar for every 1000 RPM while driving when the car's warmed up, and about 1.5 bar at idle warm. I'd worry if the gauge is reading 1 bar at warm idle and bouncing. You could plumb in a gauge and verify. The oil pressure gauges on these cars don't fail very often.
1.75 bar at highway speeds seems low. The 1 bar per 1000 RPM rule is a good yardstick. You should have around 3 bar at highway cruising speed (11o km/h) to be safe. Some guys figure much higher than that. What weight oil are you running?
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'88 944 Auto - project, kinda
'87 944 Auto - died saving my wife
'84 944 5SP - crushed under shop roof during snow storm
All others GONE!
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