I recently bought a 2009 Mercury Mariner 4wd Premier from a dealership (I upgraded from a 91 Ford Tempo…)
A few weeks ago I noticed that when I’d start my car the fuel gauge would be wrong (showing 1/4 of a tank when I had 3/4). The last straw happened when the gas light came on although I had more than half a tank. I took the car back to the dealership who verified and repaired the faulty fuel sensor. The mechanic told me it is not a common repair, yet just a couple weeks later I am finding that the problem is happening again.
What are the odds that I got a faulty replacement sensor or could it be a different issue? I will take it back to the dealership once the holiday weekend is over, but I’d like some other opinions. I know replacement parts can fail, but I know it isn’t all that common. Any thoughts or stories about similar instances would be helpful.