This is on a 1994 Dodge B250 Ram van with the 22 gallon tank.

When I bought the van the guy said the fuel gauge wasn't right and he would just fill it up every 200 miles.

When the gauge reads full, the tank is full.
When the gauge reads empty, there is actually 1/2 of a tank left.

I can't think of anything inside the tank itself that would cause this particular problem.
Certainly the float is working fine.

Does anyone know if the instrument cluster on this model has the infamous "gas gauge voltage regulator" on it?
I'm thinking that might be the problem.

Any other ideas??
I can get a used cluster for 20 bucks.

thanks.

 

My long gone 94 B250 had a 35 gal tank and would do albout 400 miles on a full tank figuring 13 mpg with my 5.9 liter engine The fuel tank was in the rear just past the axle