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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

gas n temp gauge does not work

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Old Jun 8, 2010 | 02:50 PM
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Ds7776
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gas n temp gauge does not work

I bought a 1970 F250 saturday, and the gas gauge and temp gauge do not work. I pulled the sending unit out of the tank and it still had the float on it. So i turned the key on and put my test light on it but got nothing. So i pulled the fuse which looked good and put my test light across the fuse clips and got nothing. What would my next spot to check be? Could it be a bad voltage switch?
 
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Old Jun 8, 2010 | 03:00 PM
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i had a similar problem i took inst. cluster off and found out it wasnt hooked up. has your truck had a lot of the wiring messed with in past? if so id start from the battery and work your way in. could be ingnition itself
 
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Old Jun 8, 2010 | 06:59 PM
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Ds7776
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Thanks rob. I pulled the cluster out while changing the oil and poked around back there with a test light and didnt get any thing so i gave up and put it back together. and when i fired i up after finished with the oil. I was watching the oil pressure light and what do you know the gas gauge was all of the sudden at 3/4 full. Magic huh.
 
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