Fuel pump or sensor

[RHut]

In my ongoing problems with my 2019 Limited with 110K on it: My radiator has a busted seam in the radiator. Cost to replace and flush the system (because I unknowingly put green antifreeze in the radiator to make it to the dealership and "contaminated" my system-is that even true) is $900. My fuel gauge has been going in an out. Sometimes its accurate, but lately it will sometimes show low fuel and the needle will show nearly empty when I know there is more fuel than that because I have recently filled up. They tell me I need my fuel pump replaced. Cost: nearly $2K because they have to take the tank off, etc. Can you guys give me some advice on this whole situation (see other threads about having to replace my exhaust manifolds for the third time). I'm at the point now I think I may just get rid of my Ram and go back to Ford F-150 (NEVER any problems like this through 130K miles) or move to Tundra like several of my friends have done and are completely happy.

 

[BowDown]

And some techron to a couple tanks and change where you buy fuel, use toptier fuel. toptiergas.com

You can't mix green antifreeze with the others , you have to drain and flush the system then you can use the green versions. You can get Preston in the silver jug, it's purple, and use it with others

 

[RHut]

Thanks! I'll try that before I replace the pump. Do you agree that the pump would cause this problem?

 

[BowDown]

It's not the pump itself, it's the fuel level sending unit which is built into the pump. Cheap gas without detergents will cause your fuel level problem, adding techron fuel system cleaner will fix it

 

[RHut]

So last night after returning from a late night trip my truck wouldn't start. At ALL. Nothing. Tried to jump with a starter battery. Nothing. I discovered that the negative battery cable was a little loose (enough to affect the charge) We tightened the connection and tried again with the with jumper cables and another vehicle. Close but no cigar. So I took the battery to NAPA this morning and they said it had a dead cell. I replaced the battery and when I started the truck the fuel gauge was working again. Could that have had anything to do with my faulty readings before the battery was replaced?

 

[6of36]

So last night after returning from a late night trip my truck wouldn't start. At ALL. Nothing. Tried to jump with a starter battery. Nothing. I discovered that the negative battery cable was a little loose (enough to affect the charge) We tightened the connection and tried again with the with jumper cables and another vehicle. Close but no cigar. So I took the battery to NAPA this morning and they said it had a dead cell. I replaced the battery and when I started the truck the fuel gauge was working again. Could that have had anything to do with my faulty readings before the battery was replaced?

With these high tech vehicles, a bad battery causes all sorts of problems. They are super susceptible to voltage.

 

[BowDown]

So last night after returning from a late night trip my truck wouldn't start. At ALL. Nothing. Tried to jump with a starter battery. Nothing. I discovered that the negative battery cable was a little loose (enough to affect the charge) We tightened the connection and tried again with the with jumper cables and another vehicle. Close but no cigar. So I took the battery to NAPA this morning and they said it had a dead cell. I replaced the battery and when I started the truck the fuel gauge was working again. Could that have had anything to do with my faulty readings before the battery was replaced?

Yes, the electronics in modern cars are sensitive to voltage