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AutoMeter Trans Temp guage NOT working

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Old Sep 14, 2008 | 04:33 PM
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AutoMeter Trans Temp guage NOT working

My AutoMeter Trans Temp guage is NOT working, wondering what would be a good diagnostic procedure for figuring this out?
 

Last edited by 60RatRod; Sep 14, 2008 at 04:42 PM. Reason: Added pic
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Old Sep 14, 2008 | 04:37 PM
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Did you use Teflon tape? If so, it may not be grounded. The one wire sensor gets it's ground from making contact with the trans.
 
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Old Sep 14, 2008 | 04:58 PM
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Its an electrical guage not mechanical. I checked the connections behind the guage and they look good. It's my assumption the guage is as old as the truck. I was unable to trace the wires to the tranny. Any diagnostic procedures and location at the tranny would be appreciated.
Thanks Dan
 
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Old Sep 14, 2008 | 05:05 PM
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There has to be some type of transducer to convert the thermocouple at the tranny to the voltage for the guage. There should be a thermocouple on one of the plus near the pan.
 
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Old Sep 14, 2008 | 05:13 PM
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O.K. so look around the tranny pan, look for a thermocouple ( I assume electrical, correct me if im wrong ) and check Electrical connection? Pics are helpfull as well as pages out of a service manual. I hope I don't sound like a complete moron here.
Thanks Dan
 
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Old Sep 14, 2008 | 05:17 PM
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here is a link to a pick of the sensor location. 3-Gauge Install Pictures
EDIT: Here is a link for all pages of gauge installation http://www.dieselmanor.com/diy/PSD3-...73gauge-p1.htm
 
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Old Sep 14, 2008 | 05:18 PM
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Don't worry about it. There are no morons here, just a huge family that helps each other out. Do you have a model # on the guage and maybe I can find a manual or something for you.
 
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Old Sep 14, 2008 | 05:22 PM
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I found this on the Autometer website. Do these colors match yours?


What Are These Colored Wires On My Full Sweep Electric Temperature Gauge For?

• Red = key on power supply


• Black = common chassis ground


• White (Cobalt, C2, Lunar, & NV series only) = dash lighting power


• Gray and Purple = communication between sender and gauge
 
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Old Sep 14, 2008 | 06:31 PM
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Im gonna tear the dash down again and have a look.
Thanks
 
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