Good Evening, I am having a problem with my oil pressure gauge - even after trying 3 new sender units ,that I have in stock , I find that the oil pressure gauge goes off the gauge once I start driving. I have tried a mechanical gauge and it shows the correct pressures - about 50 lb when cold and settling down to 30 lb when warm at 3000 revs. I was wondering if the voltage stabiliser could be faulty,but I don’t think that the oil pressure gauge works off the 10 volts side.
The only other thing could be that the gauge itself is faulty and I am battling to find another good one here in South Africa to try.
Any more suggestions ?