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  1. #1

    Default what did i break???

    i broke somekind of sensor last night putting on my headers, its a 94 350tbi,its on the driver side screwed directly into the block with one wire coming out of it, i think its the temp sensor, i hope anyways, what is it??? when i took it out coolant poored out so i put it right back in, what is it

  2. #2


    You are correct. It's a temp sensor. The PCM uses this sensor along with the one in the intake manifold to keep tabs on your engine temp. Not sure which one your truck uses for the gauge. Easy way to tell is unplug it and see if your temp gauge drops. Either way the PCM needs this sensor so replace it ASAP.


    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows

    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  3. #3
    Jr. Apprentice
    Join Date
    May 2007
    Iowa by way of Texas


    Where's a chilton manual when I need one. I'm gonna guess coolant sensor. So long as no wires were broken it should be fine...
    2002 Siverado 4.3L Vortec HPTuned
    2009 Colorado 5.3L V8 Z71 4X4

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