We just had the same problem on a 90 Aerostar. Proved sending unit and guage were ok. There is a small ciruit board attached to the instrument cluster (it is an amplifier for the gas guage) with a single Allen screw holding it to the instrument cluster. Where the four contacts were soldered to the little board you could see cracks in the solder. Resoldered the contacts and the guage works perfect. hope this helps?
Either the sensor is broken or Your gaug on the dash is not working.
On a 1996 Ford Aerostar , 4.0 liter V6 engine : The oil pressure sending unit for the oil pressure gauge is on the drivers side of the engine below the power steering pump
On a car, there is a float inside your gas tank. It is attached to a switch that sends the empty.....full signals to your fuel gauge.
how do you fix a gas guage on a 1989 ford aerostar
On a 1989 Ford Aerostar : I believe the oil pressure sending unit for the oil pressure gauge on the 4.0 liter EFI , V6 engine is on the drivers side of the engine below the power steering pump
you either have a diying battery or a ground short
That depends entirely on the vehicle and on how accurate the gauge is.
Check the fuses first!
Most likely, there is a small hole in the plastic float in your gas tank's sending unit. As the float fills with fuel,it sinks to the bottom of the tank and sends an "empty" signal to the gas gauge. You're gonna need a new fuel pump. Scott
The gauge or sensor needs to be replaced.
Depends on the car. Most should drop to empty when the ignition is off but some cars stay in the same position, they are rare though. (Toyota crown, Isuzu panther)
Either the gauge is broken or the sender is broken.