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Registered
1990 DeVille
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181 Posts
Discussion Starter #1
This '90 has not quite hit 23k miles, and in most respects is like a new car.

The fuel gauge, however, is not to be trusted. After a fillup it shows F for 60-80 miles, then drops to 15 or so.

With 2 showing, the engine will quit on a ramp or slope.

??
 

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Super Moderator
2010 DTS
Joined
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87,551 Posts
Sounds like it is working correctly. It WILL show "F" Full until it get down to where it can get a reading. I think technically it is overfull.

You may have a bad tank baffle. With only 2 gallons, when you turn the gas sloshes away from the pump pick up and thus starves the engine. Why in the world would you run it that low anyway? Aside from playing it too close to the wire and potentially running out of gas, the fuel pump is cooled by the fuel. Keep it at or above 1/4 tank and you'll solve the problem and save the pump.
 
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