Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

89'tbi 454 coolant temp sensor

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 3car, Sep 28, 2003.

  1. 3car

    3car 1/2 ton status

    Joined:
    Dec 16, 2001
    Posts:
    976
    Likes Received:
    0
    Location:
    Hernando, Florida
    89\'tbi 454 coolant temp sensor

    where is the temp sensor,and is there two,one for the guage,and one for the computer?
     
  2. K5DRAGER

    K5DRAGER 1/2 ton status

    Joined:
    Jul 27, 2001
    Posts:
    1,164
    Likes Received:
    0
    Location:
    Momence, IL
    Re: 89\'tbi 454 coolant temp sensor

    There should be two. One for the gauge that is located on the drivers side head. And the other one for the computer which is located on the very front of the intake manifold near the radiator hose.
     
  3. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    Re: 89\'tbi 454 coolant temp sensor

    There are three. One on the center of the driverside head is gage. one on the center of the passenger side head is for the AUX factory fan the most 454 FI trucks have. The thrid is for the computer and I don't recall where that one is. May be next to the water neck.
     
  4. 3car

    3car 1/2 ton status

    Joined:
    Dec 16, 2001
    Posts:
    976
    Likes Received:
    0
    Location:
    Hernando, Florida
    Re: 89\'tbi 454 coolant temp sensor

    thanks grim,i think the one for the computer might be bad as i have a rich condition that i cant solve.
     
  5. K5DRAGER

    K5DRAGER 1/2 ton status

    Joined:
    Jul 27, 2001
    Posts:
    1,164
    Likes Received:
    0
    Location:
    Momence, IL
    Re: 89\'tbi 454 coolant temp sensor

    Thanks Grim, I forgot about the aux. fan one. /forums/images/graemlins/thumb.gif
     
  6. 3car

    3car 1/2 ton status

    Joined:
    Dec 16, 2001
    Posts:
    976
    Likes Received:
    0
    Location:
    Hernando, Florida
    Re: 89\'tbi 454 coolant temp sensor

    thanks guys...is there a way to check the computer sender before i go buy one?
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,980
    Likes Received:
    189
    Location:
    Roy WA
    Re: 89\'tbi 454 coolant temp sensor

    Have autozone or someone hook a scanner up to it. It will tell you what it thinks the engine temperature is based on that sensor. You'll know/see if it's wrong based onwhat it should be running.
     

Share This Page