Gas gauge not marking right

[CREWZIN]

Chris,

Just did my check to help you out. Mine went from lying dormant to the very first white mark, then to red, then to half way, then to full, then to overfull. Never touched 3/4.

[Hooligan]

Mine went from1/4 to full, no 3/4 stop.

[chaase]

Originally Posted by Hooligan

Mine went from1/4 to full, no 3/4 stop.

I am having the same problem. It will only fill to 3/4 tank by the gauge reading. I just filled the car up on my way to work and it is only 2-3 miles to work. The light was on and I was only able to get 9.6 gallons in the car.

I will try the gauge test to see if that works. If the gauge sweeps correctly, I guess I will try putting more fuel in the car to see if that works. If not, anyone know where the ground is for the gauge? I am wondering if the ground is corroded and it can't get a good reference.

[chaase]

Okay...I have an update. I did the gauge test and the gauge can do a full sweep up past F. The car was reading between 1/2 and 3/4 when I started it up.

Here is the new twist. If I cycle the ignition between On and Off a couple of times the gauge went up to between 3/4 and F. If I cycle it between On and Off a few more times it will drop to between 1/2 and 3/4 again. I can reproduce it at will for the most part.

[stockss]

Most likely your problem is the fuel pump sending unit.. which is located on the fuel pump..If the float gets stuck, or moves erratic, the gauge will do the same....

[stockss]

go here and read
Maintenance, Recalls and Technical Service Bulletins



Component Description:
25. FUEL SYSTEM, OTHER
Bulletin Number: 1400101A
Bulletin Date: Jun 2001
Vehicle: 2,001 Chrysler PT Cruiser

Summary:
A CONDITION MAY EXIST IN WHICH THE FUEL GAUGE DOE SNOT REGISTER FULL EVEN THOUGH THE FUEL TANK IS FULL. ( NHTSA ITEM NUMBER - 621891 )

[chaase]

Originally Posted by stockss

go here and read
Maintenance, Recalls and Technical Service Bulletins

Thanks for the link. I couldn't find anything for my year car when I looked on another site. I am due for service soon. I will see how much it is going to cost, but it is probably not worth fixing it since I am getting rid of it soon.

[Taggert_LOA]

going rate for replacement at dealer is 300.00 installed.

[chaase]

Originally Posted by Taggert_LOA

going rate for replacement at dealer is 300.00 installed.

$300.00 isn't too bad. I thought I read the part was $300, but I guess I misread it.