Fuel gauge going crazy on both tanks now. - Ford Powerstroke Diesel Forum
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Old 05-07-2008, 11:05 AM
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Fuel gauge going crazy on both tanks now.

Whenever each tank is above 1/2 then gauge doesnt seem to mess up too bad but when it is below that the gauge flops around everytime I hit a bump go up/down a hill or stop/accerlerate. It seems to read the sloshing of the fuel instead of compensating for it like it should. I figure it is both sending units going bad but I also have my doubts about them both going bad within the same year. What do you think?
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Old 05-07-2008, 11:10 AM
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I had the same problem in my 97,if you have duel tanks never leave one empty,the sensors pickup dirt and go nuts.I found if I keep the tanks at least half full they work fine.After putting in a bottle of Seafoam in each tank the gauges work fine.
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Old 05-07-2008, 02:45 PM
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I have the same problem so just subscribing.
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Old 05-20-2008, 09:10 PM
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I have seen this post so many time and my truck does the same thing from time to time. And my grandpas truck does it as well. But have yet to ever seen a fix. The sea foam fix. But it dos make sense because my problem comes and gos
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Old 05-21-2008, 09:03 AM
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It could also be a ground problem. My front tank used to do it. So maybe check the ground on them. It was a ground on mine causing the problem.
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Old 06-02-2008, 10:54 AM
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classic ford prob. the sending unit in the tank is going out. the sending unit reads off the float and rod sometimes slime gets on them and they doing read correct on it just shot. the sea foam just cleans the film off the contact. i just changed mine out on my old 88 and put a new sock on and never had any problem after that.

Last edited by chippy; 06-02-2008 at 10:59 AM.
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