Take the wire off the sending unit (temp. transmitter) and touch it to
chassis ground, with the ignition on. This should cause the gauge to peg
on Hot. If it doesn't, use a voltage meter to see if you have any voltage
at that wire, just to double check. If both these conditions indicate no
voltage getting to the transmitter, then you either have a break in this
wire, or your temp gauge is busted, or you have another upstream problem.
In order to figure out if you have a broken wire or a busted gauge, you
must remove the gauge from the dash and check to see if the gauge is
getting voltage on the input side, and transmitting voltage on the output
side. if no voltage on the input side, you have a problem with the wire
coming from the voltage stabilizer (which feeds both the gas and temp
gauges). If no voltage on the output side, but there is voltage on the
input side, you have a busted gauge. If there is voltage on the input and
output sides, but no voltage at the sending unit, then you have a broken
wire.
Tim Holbrook
1971 TR6
>X-PH: V4.1@f05n13
>From: twinter@lsu.edu
>X-Lotus-FromDomain: LSU
>To: 6pack@autox.team.net
>Date: Wed, 29 Mar 2000 08:00:41 -0600
>Subject: thermostat and EGR
>Sender: owner-6pack@autox.team.net
>Reply-To: twinter@lsu.edu
>
>
>The temp gauge in my 6 no longer works. Is there any conventional wisdom
>about what fails, the gauge or the temp transmitter? I'll probably replace
>the transmitter, thermostat, and gasket, just for kicks, but I was just
>wondering if there was a clever way to tell which one is out.
>
>Also, I broke the brass nut that attaches into the intake manifold,
>allowing
>the EGR valve elbow pipe to connect to the intake manifold. I recently
>picked up another intake manifold that had the a cap where the EGR elbow
>pipe should go into the intake manifold. So, I capped mine as well. I
>don't see any problems other than the EGR valve (which looks like it is
>inoperable anyway) venting into the engine compartment/atmosphere. Anyone
>see any mechanical problems with that setup?
>
>Thanks,
>Ty Winter
>'74 French Blue TR-6
>
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