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Topic: gauges

in Forum: C3 Electrical


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gauges

Posted: 8/21/18 7:13pm Message 1 of 3
gtonut1
Former Member
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Washougal, WA - USA
Joined: 8/21/2018
Posts: 1
Vette(s): 1973
I have a 73 and cannot get the temp gauge to work. I grounded the green wire and nothing happens. I ran a seperate ground to the center terminal and same results. I thought that maybe the pink wire had no power so I put 12 volts to the pink terminal but s> till nothing. I changed the gauge and all the results are the same. Also the fuel level gauge wont read, yes it has gas in it, I shorted the gauge and it works, I pulled the tank and the sending unit functions and the ground is good.
> Thank you, Butch York.


|UPDATED|8/21/2018 7:13:24 PM (AZT)|/UPDATED|



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Re: gauges

Posted: 8/21/18 9:05pm Message 2 of 3
73shark
Limited Member
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Overland Park, KS - USA
Joined: 7/9/2003
Posts: 914
Vette(s): 1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day. 2023 Accelerate Yellow HTC Stingray
Welcome to the forum. You can check the temperature sensor unit by measuring the resistance when it's cold and then again when it's at operating temperature. If it doesn't change or it's an open circuit, then the sensor is bad.


1973 L-82 4 spd

Re: gauges

Posted: 8/22/18 6:20pm Message 3 of 3
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BillHanna
Standard Member
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Cana, VA - USA
Joined: 7/3/2016
Posts: 375
Vette(s): 1975 Stingray 71 350 engine Flat top pistons Sniper fuel injection Hyperspark ignition Vintage Air air conditioning Borgeson power steering box
Willcox has a diagram that shows which connector is which on a temp gauge, which you may find helpful.
http://repairs.willcoxcorvette.com/corvette-temperature-gauge-testing/

I had found a youtube video on troubleshooting a C3 Corvette temp gauge, but I can't find it again now.  It did show some common problems and what was causing them.  My temp gauge always stayed around 100 degrees, and the video indicated that an insulator on one of the connection posts may be bad.  Haven't had time to pull it and check yet.

I found the troubleshooting video for the temp gauge: https://www.youtube.com/watch?v=A9iPeiu9Y8M



|UPDATED|8/22/2018 6:20:43 PM (AZT)|/UPDATED|



   

in Forum: C3 Electrical


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