Re: First Technical Question - Islero Oil Press Gauge

Great ideas.Thanks, Jack. --- In VintageLambo@y..., Jack Riddell wrote: > Udo, > > One more thing to check. Look at the ground at the back of the gauge as > well as the electrical connection from the sender and also the > connection at the sending unit.. An intermittent connection can cause > some major needle jump. > > Jack > > miura_sv wrote: > > > Gentlemen, since your 400s are very similar to my Islero, perhaps you > > might be able to point me in the right direction with this.I have > > only put a few miles on my Islero since I bought it (haven"t had time > > to get it inspected yet), but I was driving it yesterday and noted > > the following.With the oil fully warm, at idle it registers about 6- > > 8 kg/cm2.As I get above about 4500 rpm, the needle intermittently > > fluctuates wildly, the needle bouncing all over.I though it was > > probably just the gauge.But then a particularly troublesome thing > > happened after I accelerated strongly away from a light (showing > > off).The gauge dropped to zero with throttle, then returned > > to "normal" when I backed off.Even part throttle would cause it to > > swing back to near zero.It was like the silly fuel economy gauge in > > my old 944. > > > > I"ve never had a car "lose" pressure as the revs go up.Any ideas > > where to start diagnosing the problem?Could the sender be bad (it > > is 33yrs old if original)?Could the pump be bad?Wiring? Gauge? > > > > Awaiting your wisdom, > > > > Udo Schuelke > > Islero 6198