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Wacky temp guage!

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Old May 6, 2006 | 03:03 PM
  #1  
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tom1979
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Mountain Pass
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From: Zachary, La.
Unhappy Wacky temp guage!

Hi guys, need some help! I have a 1979 F-150 XLT with dash guages and the problem is the temp guage is reading higher than I want for the truck temp. of the engine. I have a manual temp guage that runs at 195* at highway speeds. The stock dash guage will read 3/4 or higer at times. It seems to fluctuate. I remember years ago when I had overheating problems after rebuilding engine; 4 row radiator solved, there was two set screws on the back of the guage to adjust the range or calibrate. Is there a accurate way to center the guage to the running temp of the vehicle with shade tree mech. skills? Thanks for any help!
 
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Old May 8, 2006 | 09:00 PM
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Ultramagdan
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From: Kansas
If it is changing while rolling down the highway I would suspect a bad sensor or a possible grounding problem. The system is filled to the correct level, yes?
 
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Old May 10, 2006 | 02:36 PM
  #3  
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tom1979
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Mountain Pass
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From: Zachary, La.
mega, the guage changes on both tanks (dual) It will show one time full with the tank topped off, then three quarter full the next time I turn on the key. Any thing else to check?
 
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