6.9 Temp Sensor
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New User
Joined: Apr 2009
Posts: 22
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6.9 Temp Sensor
I searched around a bit but couldnt find a straight answer
My temp gauge only reads about 1/8 of the time. I'm guessing my temp sensor is bad or a have a bad connection somewhere.
Just need to know where the sensor is so i can start fiddling with it
Thanks
My temp gauge only reads about 1/8 of the time. I'm guessing my temp sensor is bad or a have a bad connection somewhere.
Just need to know where the sensor is so i can start fiddling with it
Thanks
Senior User
Joined: Nov 2008
Posts: 319
Likes: 0
From: Western Australia
You could but you wouldn't have the light. There is the same hole in the other head at the back with a bung in it you could use or I used one in the side of the block near the oil cooler.
Dave, why is your engine painted holden red instead of ford blue?
Dave, why is your engine painted holden red instead of ford blue?
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
The gauge and light are independant of each other on 6.9 era trucks.
I just wanted to be different, that is actually Ford red and silver high temp paint.
Here it is right before I installed it after the rebuild.
I just wanted to be different, that is actually Ford red and silver high temp paint.
Here it is right before I installed it after the rebuild.
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Looks so cool painted Red!
Laughing Gas
Joined: Aug 2007
Posts: 1,132
Likes: 0
From: Baldwin, ND
Loaded most guys say 230F is tops. The dummy light comes on ~242F if I remember correct.
Now that I have a fully functional cooling system my temps dont go over 190F unless I am loaded or going up a big hill or mountain!
Thad
Now that I have a fully functional cooling system my temps dont go over 190F unless I am loaded or going up a big hill or mountain!
Thad
New User
Joined: Mar 2010
Posts: 2
Likes: 0
Hey Dave. I've been searching for some answers and I think you might be my holy grail. I just bought an 87 f250 with a 6.9. The engine is not overheating, but the temp gauge is pinged at its hottest point. I know its not overheating because it does this right as the engine is started and doesnt change at all. Also, I just replaced the water pump and stat and hoses and flushed the radiator..
I replaced the sensor on the left of your infamous picture of the two sending units, and it's still doing the same thing. Do you think I have a short in the wire or is there some magical crazy thing that I am missing? This truck drives like a dream and although i am 100% positive that it isnt overheating, I am still apprehensive about going anywhere until I can get this sorted out.
I've been coming here for a while checking out little tidbits of info over the years, and the knowledge here is completely insane. I love it!
I replaced the sensor on the left of your infamous picture of the two sending units, and it's still doing the same thing. Do you think I have a short in the wire or is there some magical crazy thing that I am missing? This truck drives like a dream and although i am 100% positive that it isnt overheating, I am still apprehensive about going anywhere until I can get this sorted out.
I've been coming here for a while checking out little tidbits of info over the years, and the knowledge here is completely insane. I love it!
