My 2006 Chrysler 300 is still not running right after changing the fuel pump my hand on the dash say empty but it has gas so I did what Hans C.Williams requested and checked the float it is a brand ne

All in the bottom link for the location of the coolant temperature sensor.

For your idling issues clean the throttle body and mass air flow sensor.

https://www.google.com/search?q=chrysler+300m+clean+throttle+body

Location of CTS

https://www.google.com/search?q=chrysler+300m+coolant+temp+sensor+location&rlz=1C1QJDB_enCA643CA644&sxsrf=APq-WBv2M3OysisH9qvICbeqIEy7mY6Law:1650231680692&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj6p_-IiJz3AhVKaM0KHaKBBIwQ_AUoAXoECAEQAw&biw=1920&bih=937&dpr=1

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Your fuel pump is lubricated and cooled by the fuel running through it. You almost certainly need a new pump as only 2 minutes running dry will wreck them. Have the fuel pressure checked, this is an inexpensive task..

Have a read of this

https://www.corvetteforum.com/forums/c4-tech-performance/1839981-how-fast-will-a-fuel-pump-fry-when-running-dry.html

and this

Q: Could my fuel pump be bad after running out of gas?

https://www.yourmechanic.com > Questions
Jan 5, 2017 · 1 answer
As you may know, today's fuel pumps require the fuel to keep them cool and lubricated. When the motor is run dry out of fuel, this can cause the ...

New pumps

https://www.ebay.ca/b/Fuel-Pumps-for-Chrysler-300/33555/bn_1358847

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Well, if you keep driving and you don't run out of gas. I would say the sending unit on the fuel pump is bad. And not reading how much gas is in the tank.

The fuel pump normally only comes on for a second unless the car starts and is running, if the car starts and the pump only runs for a few seconds, then there is a problem with the engine signal to the ecm, ie its not telling the computer that it is running. I dont believe there is a schrader valve on those fuel lines, if there is, chrysler probably put it underneath the intake plenum. If the car will not start, but you hear the fuel pump kick on and off, it could have a clogged fuel filter, or injectors, or even bad connections going to the injectors. They normally are all switched via the ground wire for each injector, so if they are not cycling it could be a bad ecm, or bad connection somewhere in the wiring harness

I don't think so. My guess would be that the float in your fuel tank is stuck. You may need to replace it. I hope this is some help to you.

Yes there is, however before you spend any money. Have someone crank the car while you look inside the engine by taking the oil cap off, if the camshaft is not moving then the taming belt is broken. These cars are prone to this problem specially if the is not replaced every 90,000 miles

It could be the gauge on the dash or the sending unit in the fuel tank is bad. If it is the sending unit ,the gas tank will most likely have to be taken out. And if the dash gauge the dash will have to be taken apart. Diagnosis of Stuck Fuel Gauge Is it Gauge or Sending Unit Here is a video how to test it.

check for power to the fuel pump, ck your connections to the fuel tank, if the connections are good, and you have voltage to the sending unit, your fuel pump is bad, since your gauge reads empty, and it is full of fuel, I would really look a the connection at the tank

25miles. is an est. 1 gallon of gas in tank dont run it that low that miles to empty is an estamate.

They won't run. If it seems like it's starving for gas, change the fuel filter. Sometimes a fuel pump will get weak, but on a car only 3 years old it shouldn't be.