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  1. #1

    Default coolant temp sensor

    So i was changing out my negative battery cable today and bumped my hand on the coolant sensor that threads into the intake manifold, and i guess after 15 years the plastic became brittle so it snapped right off. from what i can tell this just sends a signal to my dashboard for my temp reading.

    Does anyone know if i can leave it unhooked and still drive the truck until i get a new sensor this weekend? Also, what are my chances of actually being able to unthread the sensor after 15 years?

    Frederick, MD
    1995 Chevy truck
    223,000 miles and counting

    :fighting0098: chaos, panic and work here is done

    2007 Chevy Imp
    2006 Chevy Colbolt
    2007 Suburban
    1986 Camaro
    1996 Saturn
    1999 Saturn
    1996 Oldsmobile
    1995 K1500

  2. #2
    Jr. Engineer hundojoe's Avatar
    Join Date
    Feb 2010
    Elk River, Minnesota


    Its prolly not going to run very well, im sure it will throw a check engine light and run in limp mode. the coolant sensor dosent just run the gauge it also tells the computer how hot the motor is obviously, but it also has to do with timing and fuel trim.

  3. #3
    murdog94's Avatar
    Join Date
    Feb 2008
    Cloquet, Minnesota, United States
    Blog Entries


    You broke the Sensor and not the switch right?? the sensor will make your truck run rough since it sends the temp to the computer to determin your fuel trims, and the switch mounted in between the #1 and #3 cylinders on the head. The Switch is what sends the signal to the guage on your dash.. It wont even really go into limp mode it wil just run really really rough.. So id advise that you dont drive it.. The switch should be about $15 mabey less.. I just had to replace mine on my old truck.. And it is a brass fitting it will actually come out quite easly.


    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  4. #4


    Thanks for the info guys. I changed it out tonight with no issues.

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