1990 F250 D Fuel Gauge issues!
I have a 90 F250 with fuel gauge problems, They read empty on both tanks when full and random at times at varying fuel levels but never right and generally not working at all. Odd thing, when you pull the wire from the sending unit it goes to full, this is wrong it should read empty! I am thinking there is a feed back in the system some place as I have replaced the sending unit and gauge set but still problem persists.
Is it possible for the tank selector switch on the dash or the tank selection mechanical controller could malfunction and cause this problem but still change tanks and function normally beside the reading of content?
Anyone had a problem like this?