Re: First Technical Question - Islero Oil Press Gauge

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