Temperature gauge

2002 CHEVROLET BLAZER
176,000 MILES • 4.3L • V6 • 2WD • AUTOMATIC
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JK68
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  • 11 POSTS
my temperature gauge would go from cold to hot. it will do this while you were driving. I changed the temperature sensor out and now the gauge does not work. Is there another sensor? I cannot see the gauge being bad, it would go from cold to hot. Thank you.
Mar 17, 2018 at 10:51 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Did you change the one by the thermostat or the cylinder head? the one on the left cylinder head controls the gauge unit.

Roy
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Mar 17, 2018 at 11:56 AM
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JK68
  • MEMBER
  • 11 POSTS
i changed the one by the cylinder head.
Mar 18, 2018 at 8:19 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Okay

Remove the wire from the sensor and see what the gauge does.
then ground the wire and see what it does.

Roy
Mar 18, 2018 at 12:31 PM