Results 1 to 2 of 2

Thread: testing gm coolant temperature sensors

  1. #1
    Senior Member
    Join Date
    Nov 2009
    Location
    winchester, va
    Posts
    4,173

    testing gm coolant temperature sensors

    To test the coolant sensor, unplug the wire connector and test the resistance across the two terminals of the SENSOR with an ohm meter.

    The sensor screws into the intake manifold, on the front passenger side, by the thermostat housing.

    Coolant sensor approximate resistance specifications:
    177 ohms @ 212 deg. F. or 100 deg. C.
    241 ohms @ 194 deg. F. or 90 deg. C.
    332 ohms @ 176 deg. F. or 80 deg. C.
    467 ohms @ 158 deg. F. or 70 deg. C.
    667 ohms @ 140 deg. F. or 60 deg. C.
    973 ohms @ 122 deg. F. or 50 deg. C.
    1188 ohms @ 113 deg. F. or45 deg. C.
    1459 ohms @ 104 deg. F. or 40 deg. C.
    1802 ohms @ 95 deg. F. or 35 deg. C.
    2238 ohms @ 86 deg. F. or 30 deg. C.
    2796 ohms @ 77 deg. F. or 25 deg. C.
    3520 ohms @ 68 deg. F. or 20 deg. C.
    4450 ohms @ 59 deg. F. or 15 deg. C.
    5670 ohms @ 50 deg. F. or 10 deg. C.
    7280 ohms @ 41 deg. F. or 5 deg. C.
    9420 ohms @ 32 deg. F. or 0 deg. C.
    12300 ohms @ 23 deg. F. or -5 deg. C.
    16180 ohms @ 14 deg. F. or -10 deg. C.
    21450 ohms @ 5 deg. F. or -15 deg. C.
    28680 ohms @ -4 deg. F. or -20 deg. C.
    52700 ohms @ -22 deg. F. or -30 deg. C.
    100700 ohms @ -40 deg. F. or - 40 deg. C.

  2. #2
    Platinum Member
    bradrhale's Avatar
    Join Date
    Apr 2006
    Location
    Texas
    Posts
    11,159
    Quote Originally Posted by davbell22602 View Post
    100700 ohms @ -40 deg. F. or - 40 deg. C.

    this is assuming that you have an ohmmeter that can read that and the person actually mixed the antifreeze right. in the northern most part of canada. if they didnt mix it right and it froze, there is really no point in testing that sensor, i dont believe.
    good info though.

Similar Threads

  1. 2003 ram 1500 4.7L using coolant and exhaust smells of coolant
    By dthomas27 in forum Dodge Truck Forum
    Replies: 2
    Last Post: 12-22-2009, 03:03 PM
  2. Tire Pressure VS. Temperature
    By merlin5577 in forum General Truck Forum
    Replies: 2
    Last Post: 12-28-2008, 04:17 PM
  3. Temperature Gauge
    By curtis_98 in forum Mazda Truck Forum
    Replies: 1
    Last Post: 03-29-2008, 05:06 PM
  4. Heater temperature control
    By ch47pilot in forum Chevy Truck Forum
    Replies: 1
    Last Post: 01-22-2008, 07:07 PM
  5. Temperature sending unit location
    By nnunez in forum Toyota Truck Forum
    Replies: 4
    Last Post: 10-15-2007, 07:45 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •