G'Day guys, i am chasing a rough idle whem the engine is warm on my 300TE M103 1989MY. I just measured the engine temperature sender after getting home (40 min drive) with the engine off. I measured from each terminal post to earth and got around 260 ohms and steadilly declining. I measured it again with the engine running ant it wat about 370ohm and declining at a rate of amout an ohm/sec.Is this normal? I haven't measured it cold and will do in the morning but my idle issue seems to come into play as the engine warms.