I have a 2004 350z and I noticed that the gas tank wasn't as reliable as I would want it (the meter jumps up and down). I never really know how much gas I got in the tank. It's usually 1/4 light or over than it reads... Any ideas why it might do this?

 

wow, never heard of this problem before. did you search and see if anyone else has had this problem?

 

I seen a thread on this a few days ago I believe. It's here somewhere. Just have to search for it.

 

I have a similar problem. I posted about it a few weeks ago. But i'm being lazy and dont wanna look.

 

Gas tank problem or fuel meter issue?? The gas tank just holds fuel in it. It's probably an electrical/fuel gauge problem. See your auto electrical mechanic, dude.

 

i thought it was just my car, but yeah i notice that too
the gas meter tend to drop a bit lower than usual when the car is cold in the morning and rises just a little when the car heats up a bit

i notice this when i start my car in the morning and when i start my car in the afternoon

my guess is the gas meter on the Z is sensitive lol

 

is this normal? i dont think an expensive sports car should have this problem and its driver shouldnt have to put up with it

 

I have an 05. Gas meter and digital read out displays lower than normal numbers as well when the car is cold. After 5 minutes of driving its back up to where it was when I turned the car of last time. Confusing. yes.

 

mine never jumps or anything its not bad. I just wait until the low fuel light comes on and i can drive 70 or so miles after that then i get gas. Ive gone 85 afterwards before it comes on hella early.

 

Its not an expensive sports car.....

 

this is exactly what happens to me

 

Test the float/sending unit from the tank. If that checks out, check the wiring from the sending unit to the dash.

Cars break - even "expensive sports cars". Nothing lasts forever.