From: Rob D
Email: robdumoulin@yahoo.com
Date: 08 Jul 2001
Time: 15:19:02After taking some advice from the board, I did a little testing on my 1980 931. I took an ohm meter and tested the quality of the ground to my oil pressure gauge. I noted the ground showed resistance. By splicing a good ground into the brown ground wire on my oil pressure I no longer have the oil gauge bounce when I turn on headlights or turn signals. YIPEEEE.
Still have poor oil pressure when car warms up though and at idle, the oil pressure light and brake warning light comes on till you rev the engine. This occurs even when the pressure gauge says 2 bar. What gives?