Author Topic: coolant sensor  (Read 3477 times)

Offline southdakota85chevy

  • Newbie
  • Posts: 6
coolant sensor
« on: August 23, 2010, 09:35:49 pm »
ok so the deal is i have an 85 with a 350, but the block is not necessarily from an 85 because its a reman., but the problem was the temp gauge quit working so i replaced the sensor on the block, and now the temp sensor that o reilys gave just shoots over to the hot side as soon as i start it, sensor looks identical, what would cause this?

Offline beastie_3

  • Senior Member
  • ****
  • Posts: 3170
  • Josh
    • My truck pics
Re: coolant sensor
« Reply #1 on: August 23, 2010, 09:37:59 pm »
a bad sensor.

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: coolant sensor
« Reply #2 on: August 24, 2010, 04:00:52 am »
x2 but just to be sure unplug it and don't let it ground out and see what your gauge does
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19182
Re: coolant sensor
« Reply #3 on: August 24, 2010, 09:50:22 pm »
You need a coolant temperature sending unit for a gauge not for an idiot light and not a sensor. The coolant temp sensor is for the ecm not the gauge.
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline beastie_3

  • Senior Member
  • ****
  • Posts: 3170
  • Josh
    • My truck pics
Re: coolant sensor
« Reply #4 on: August 25, 2010, 11:07:50 am »
a bad sensor.


OP called it a sensor, so i did as well. But yes it is a temp sending unit.