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Temperature gauge

Tiny
JK68
  • MEMBER
  • 2002 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 176,000 MILES
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.
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Saturday, March 17th, 2018 AT 10:51 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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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Saturday, March 17th, 2018 AT 11:56 AM
Tiny
JK68
  • MEMBER
  • 11 POSTS
I changed the one by the cylinder head.
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Sunday, March 18th, 2018 AT 8:19 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay

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

Roy
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Sunday, March 18th, 2018 AT 12:31 PM

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