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Wanted to validate my understanding of the low oil pressure sending switch =
on a 1976 TR6.=C2=A0 I noted that a wire was not hooked up and when I hooke=
d it up, the oil pressure warning light came on and stayed on when the car =
was cranked.=C2=A0 In the 25 years I have owned this vehicle, I have never =
seen the low oil pressure light on so didn't realize that there was a probl=
em. I put a meter from the switch to the positive battery terminal.=C2=A0 W=
hen I crank the car, there is 13.7 volts, regardless of the oil pressure.=
=C2=A0 My sense is that the switch should only ground under very low oil pr=
essure, and that when suitable pressure is achieved, the ground is disconne=
cted.=C2=A0 My assumption is that there is an internal short in the switch =
which is keeping the ground connected regardless of oil pressure.=C2=A0 Wou=
ld this be a correct assumption, or is there another issue?=C2=A0=C2=A0Davi=
d Gill1976 TR6
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<div style="color:black;font: 10pt arial;">Wanted to validate my understanding
of the low oil pressure sending switch on a 1976 TR6. I noted that a wire
was not hooked up and when I hooked it up, the oil pressure warning light came
on and stayed on when the car was cranked. In the 25 years I have owned
this vehicle, I have never seen the low oil pressure light on so didn't realize
that there was a problem. I put a meter from the switch to the positive battery
terminal. When I crank the car, there is 13.7 volts, regardless of the
oil pressure. My sense is that the switch should only ground under very
low oil pressure, and that when suitable pressure is achieved, the ground is
disconnected. My assumption is that there is an internal short in the
switch which is keeping the ground connected regardless of oil pressure.
Would this be a correct assumption, or is there another issue?
<div>David Gill</div>
<div>1976 TR6</div>
</div>
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