Why does my fuel gauge give different info minutes apart?

2001 BUICK LESABRE
96,000 MILES
Avatar
TPH
  • MEMBER
  • 1 POST
This AM the gauge showed about 1/8 full. on my way to get gas it registered 1/2 full and then full before dropping down again to 1/2 full. Also the fuel info button (miles left, average mpg and current mpg keep changing. HELP!!! I'm guessing it's an electrical or computer problem.
Dec 9, 2011 at 11:25 AM
Advertisement
Avatar
SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Most common reason for that is a faulty fuel sending unit.You would have to fill the tank and see it not reading full then measure the restance from the wires coming from the fuel sensding unit.Also do you have any codes?
Dec 9, 2011 at 11:33 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Could be a problem with the fuel sending unit and other electrical problems involving the other stuffs
Dec 9, 2011 at 11:34 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle