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What reason my full gaz tank shows on the dash Zero and jumps to Full on Chevy Impala-2001 with 3.8 engine?
Wiki User
∙ 12y ago
I would bet the fuel sending unit is the culprit. Go to Walmart and buy 2 bottles of Techron in the auto parts section and add them to your gas tank. Not both at the same time.......use one and then when you fill up again add the other. GM's fuel pumps and sending units are ntoroious for fouling up with sulpher and Techron removes the sulfur from the fuel sending unit. I own a 2004 Corvette and this same problem has plagued many of the Vette owners. It may take up to 3 tank fulls but this usually eliminates the problem. I would try this before I went looking anywhere else . And when you do buy gas, try to buy what is called top tier gasoline. It is not the most expensive, but it has the additives already in it to dissolve this sulpher.
Do a Google search and type in "top tier gasolines" and read what gasolines have these cleaning agents. I hope this fixes your problem.........I figured it would be a good place to start and you have nothing to lose other than the cost of the Techron.
Wiki User
∙ 12y ago
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