Accuracy of Stock Temperature Gauge -
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Unread 07-31-2011, 09:42 AM   #1
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1979 CJ7 
Join Date: May 2011
Location: clinton, MS
Posts: 481
Accuracy of Stock Temperature Gauge

Are there any specs on the CJ stock temp gauge. Mine has always run toward the H side but always in the green. Should I be concerned, or do they have enough design margin (i.e. read a little high) that it be considered good enough to protect the engine.

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Unread 07-31-2011, 10:19 AM   #2
Mike Romain
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1986 CJ7 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 17,207
Mine ran slightly above half to pushing red on the gauge for years, then I got new cores for the rad that they said were 25% more efficient than the old style ones and they seemed to be right because the gauge then went to below the halfway point.
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
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Unread 07-31-2011, 10:31 AM   #3
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I just added a mechanical guage to go along with the stock guage. Using a 195 thermostat and when the mechanical reads about 200 the stock is slightly more than 1/2 in green.
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gauges , sending unit , temperature gauge

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