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# 2002 impala gas gauge problem

#1
06-28-08, 06:34 AM
Member
Join Date: Feb 2005
Posts: 68
2002 impala gas gauge problem

Hi I had just noticed that My tank below the 1/4 line at the moment has started to fluctuate whenever I brage or take a hard curve. Has anyone run into this before??? Thanks in advance for your help.

#2
06-28-08, 06:57 AM
Group Moderator
Join Date: Feb 2001
Location: SW Fla USA
Posts: 12,008
Used to be you would suspect the voltage regulator in the system that was designed to control excessive movement of the needle on hills and curves. With everything gone computer now, more likely to be in the electronics. Here's some reading material until one of the pro's shows up:

http://auto.howstuffworks.com/fuel-gauge.htm/printable

#3
06-28-08, 07:50 AM
Member
Join Date: Jun 2008
Location: Maryland
Posts: 295
I think it's just the fuel sloshing around in a tank without baffles, and the gauge is underdamped.
My Subaru gauge takes many seconds to respond to the actual fuel level, so I think they overdamped this one, maybe to cover other problems.

#4
06-28-08, 11:54 PM
Member
Join Date: Feb 2005
Posts: 579