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mechanical temperature guage problem!!!

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Old May 31, 2009 | 11:09 PM
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mechanical temperature guage problem!!!

hello all. I installed an equis 3 guage set on my 75 F250 460ci about a month ago. the water temp and oil are mechanical and the volt meter is fed through a key on source at the fuse box. they all have worked flawlesly until today. I took my daughter to the park today and noticed my temp guage is on like 140 deg. I have a 180 thermastat wich is brand new. the guage was working perfectly before I have not a clue what could be wrong. the tubing is run through the firewall with a rubber grommet, I have checked for severe bends, twists, and can fine nothing wrong with my install. could that sending unit that goes into the intake be bad already? I figured these would last for years. thank you.
 
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Old May 31, 2009 | 11:17 PM
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I have a autometer mech. temp gauge that was sticking on me right after I put it in. I just left it alone and after about a week it started working ok and been fine since. Not sure if that would work for you though.
 
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Old May 31, 2009 | 11:32 PM
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It isn't so much a "sending" unit as it is the "gas" inside the tubing from the threaded adapter to the gauge.

They go bad all the time.

Josh
 
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Old May 31, 2009 | 11:32 PM
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thanks i will wait it out then.
 
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Old May 31, 2009 | 11:35 PM
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so then if that threaded adapter is toast. will i have to be that whole section of tubing with the sending unit on it. and do they sell that piece. thanks
 
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Old May 31, 2009 | 11:41 PM
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Whole new gauge, there is gas sealed inside the tube.

I would change it out for an electrical gauge myself.

Josh
 
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Old Jun 1, 2009 | 01:42 AM
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Originally Posted by Bullitt390
I would change it out for an electrical gauge myself.
I second this. I run a mech. oil pressure gauge, but prefer the electrical water temp. gauge.
 
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