Fuel guage fluctuates - 2002 Chrysler Sebring

Could be power fluctuations to the fuel gauge sending unit, a bad sending unit or a bad gauge. The sending unit would be the most likely cause.

It could be the sending unit in the tank or the gauge on the dash. A mechanic would test the signal coming from the sending unit to verify.

there is a short somewhere

sounds like a fuel sending unit issue from your description.
see if this fits the bill.

Link Here!!

that is for the

2001 - 2003 Chevy Silverado 2500 Fuel Tank Sending Unit for V8 8.1L

good luck.

by the way the issue may be one or more things to be honest. the fuel in the tank may be moving around and as it shushes from side to side the electrical resistance in the variable potentiometer of the fuel sending unit will either increase or decrease.

an example would be a full tank of gas will cause a floater attached to a lever to float to the top of the gas tank. now as the gas gets lower the level wil drop and so will the float. now remember it's attached to a pot so as it moves it's electrical value decreases. and the gas gauge reads the value as a fuel level.

if the gauge dose not move when the vehicle is idle then id say it;s just the gas moving around within the tank. it's worth a shot to test this before spending any money on it.

good luck.

First guess will be a loose connection on the pickup unit. On the fuel tank it should be undre the rear seat depends on your car. There you can check and clean the connection and check behind the guage on the cluster for any wire or curcuit damage

you may have a bad fuel pump or a bad injection pump,here are picture of the two, as far as the gauge you may have a bad fuel sending unit, this is in the tank and work like a toilet float and sends a signal to the gauge, the injection pump and fuel pump are located on top of motor you would need to have the preasure checked on both before just replace them hope this is helpful.

You can just replace the gas cap...However about the fuel guage fluctuates back and forth...thats due to the sending unit, which is located on the fuel pump itself

theres 2 options,voltage feeding pump is fluctuating,or pump itself is going bad!

the 100% for sure cause of this problem is the sending unit for the fuel guage, it is located in the gas tank. U may have to replace the fuel pump module to get the sending unit, as a rule they are one piece, if u have over 100,000 miles that is a good idea anyway.

make sure all connections are tight. sounds like a ground problem. or flote in tank is not working right or catching on something.