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Coolant temperature sensor or connector

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Welcome back, Steve.

If you lose voltage when connected to the sensor, either the sensor is bad or you have a weak ground. Voltage really shouldn't change.

Let me know.

Joe
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Saturday, July 27th, 2019 AT 5:58 PM
Tiny
STEVEN SPELLMAN
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  • 13 POSTS
I realized why the voltage was low. The voltage rises as the sensor heats up via the antifreeze. The question I have is I replaced my fuel pump before I tackled my timing belt. If the vehicle will start without the sensor plugged in would the fuel pump be the problem? It's a new fuel pump so I'm lost here.
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Friday, August 23rd, 2019 AT 4:38 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Welcome back:

No sir, the pump wouldn't cause that to happen.
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Friday, August 23rd, 2019 AT 8:38 PM

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