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Thermostat circuit

Old 05-05-2019, 12:23 PM
  #1  
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Model: Cherokee (XJ)
Default Thermostat circuit

I have a 98 Cherokee xj with the thermostat gauge reading random temps. I already replaced the thermostats and ran the code and it said low thermostat circuit voltage and low charging output. How could I fix it?
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Old 05-05-2019, 01:44 PM
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Posts: 4,532
Year: 1998 Classic (I'll get it running soon....) and 96 (just purchased) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
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The problem isn't the t-stat. It's either the sensor (likely) the wiring (quite possible). The sensor can be tested. Just search YouTube for "test cherokee temperature sensor" and you'll find plenty of videos.

If the sensor seems okay, then start looking at your grounds.

Last edited by BlueRidgeMark; 05-05-2019 at 01:56 PM.
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