Overheating problem
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Mountain Pass
Joined: Jun 2010
Posts: 186
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From: Dunbarton, NH
Overheating problem
My 94 f-250 Just started overheating today. Needle was buried in the red on the way home. When I got home I went to check the upper hose which was warm and had no pressure. I was thinking it may be the t-stat or the water pump. I took the radiator cap off and the radiator coolant level was about a half inch low. What do you guys think??
Thanks Bob
Thanks Bob
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
No pressure indicates a leak or failing radiator cap; I know I've had problems with crud keeping the radiator cap from sealing before.
Overheating, I'd probably replace the t-stat. Waterpumps don't usually fail that way; for the pump to break off would require shearing a 1/2" or so shaft.
Overheating, I'd probably replace the t-stat. Waterpumps don't usually fail that way; for the pump to break off would require shearing a 1/2" or so shaft.
i ain't rite
Joined: Mar 2005
Posts: 65,564
Likes: 5,600
From: Marlboro Mental Hospital.
when i see the gauge read hot, i shoot the radiator and block with an infrared thermometer to see what is really going on.
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Mountain Pass
Joined: Jun 2010
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From: Dunbarton, NH
I don't have an infrared thermometer so I suppose I should look into getting one.
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Thread Starter
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Mountain Pass
Joined: Jun 2010
Posts: 186
Likes: 0
From: Dunbarton, NH
No it wasn't on. It's got a sender not sensor. Only 1 wire going to it.
i ain't rite
Joined: Mar 2005
Posts: 65,564
Likes: 5,600
From: Marlboro Mental Hospital.
correct. the sensor on the driver side head is for the CEL. i don't remember where the gauge sensor is.
there are only two things that will set the CEL, low oil pressure, and high engine temperature.
there are only two things that will set the CEL, low oil pressure, and high engine temperature.
Postmaster
Joined: Dec 2011
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They are both on the driver's side head/block, right there at the front of the engine. The gauge sender is the 'topmost' one, the switch is further down and larger(I replaced that with an actual RTD probe).
Thread Starter
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Mountain Pass
Joined: Jun 2010
Posts: 186
Likes: 0
From: Dunbarton, NH
Well I got a new radiator cap and thermostat from Ford but haven't had a chance to change them yet due to working stupid hrs!! Hopefully soon I'll get it done!! Thanks for all your help guys!!