URGENT: Chrysler Pacifica Question: Fuel pump acting up.

HOW URGENT???

What are you asking; If is a fuel pump problem, and that would have to be verified through a fuel pressure and volume test.

You need to at least test the fuel pressure. Exhaust back pressure maybe? Get it to one of our shops and have them diagnose it. Throwing parts at it gets really expensive. GL

the fuel tank has 2 bladders and 2 fuel pumps. one pump controls the fuel levels from the passenger side to the driver side bladder. if that one stops working, you only get gas from the drivers side bladder. This means if you have a full tank of gas, you can only use 1/2 of it before the computer says your tank is empty and the computer shuts off the motor to keep you from running it dry and damaging the fuel system. my guess is that when you have a full tank of gas, the fuel gauge works fine, but once you get to about 1/2 tank, it plummets to empty. if this is the case, you have to have the fuel pump replaced and the BCM updated. the repair is expensive, unless you vehicle falls in the parameters of the recall they did on it. it is Chrysler recall F44. have them check to see if you qualify for it.