Yet another issue with the truck I purchased. The fuel gauge reads empty unless I unhook the coolant sensor. When I unhook the coolant sensor the fuel gauge reads as it should.
Paccar quality lol. The truck's like 10 years old or something if I remember it right from OP's other post. Not so much a quality issue as simply not being looked after by the previous owner. Does the temperature gauge work correctly?
That's a weird one. Only thing that comes to mind is a short in the dash between the fuel gauge and temperature gauge. Or a poor gauge ground.
I believe this guy is living in your dashboard somewhere. They're super hard to kill and can easily move from truck to truck. Park next to a volvo (their favorite snack) and unhook your batteries. If you're lucky he may get bored and move on.
