Hello there i have a 1994 F-350 with duel fuel tanks and the front tank reads empty all the time, and on the rear tank it doesnt seem too run as well for some reason.

So i was thinking about just changing all the fuel pumps, sending units and whatever else will just solve the problem.
Question is, where are the fuel pumps? are there one in each tank then another on the bedrail?

Also my temperature gauge doesnt work, reads cold all the time needle never moves, what could cause that?

 

If its a gas engine, and its a 94, each tank has its own high pressure pump, no rail pumps. Changing the sending units might fix the gauge problem, I know my floats had small cracks in em and they would fill up with gas and sink in the tank. As far as your gauge goes, verify its plugged in to the sender, if it ism unplug it, ground it, turn the key to the on position, if the gauge and wiring is good, the gauge should move to hot, if it does not, the problem is the wiring or gauge. Welcome to the forum, we love pics here!

 

yea ill check the sending units and see whats going on with them. Good thinking for the temp gauge ill do that too.

Yea i just joined this forum, first forum i ever had joined haha. Still trying to figure out how to upload pictures