Fuel level sensor


#1

I have a 2004 BMW Ci with 77,000 mi. Lately, I’ve noticed when I have less than 1/4 tank the car lugs. It doesn’t happen all the time but I noticed when it does happen it’s below 1/4 tank. Also one day I had 50 mi left on the tank and was driving on the highway, the car seemed sluggish so I pulled off to fill the tank. As I downshifted it began lugging and stalled 2x before I rolled into the gas station. The mechanic is saying it’s a fuel level sensor and will take 3 hours to do. I’m no mechanic and here in Northern VA everyone is ready to take advantage. HELP!


#2

So what does this mean? Is the mechanic saying the sensor is causing the gauge to be incorrect and you are running out of gas? I don’t get the connection. Have the fuel pressure tested, especially when the tank is low.

I recommend never driving with the tank below 1/4, as the fuel is what cools the fuel pump, and driving with a nearly empty tank is harder on the expensive-to-replace fuel pump.


#3

The problem you describe is usually a weak or leaking fuel pump inside the tank…


#4

I thought a fuel pump made more sense. The mechanic did not explain the reason just gave me the answer on a Friday evening and now they are not at the station. It does feel like there is no gas getting to the car when I accelerate.


#5

They originally told me they were going to remove gas from the tank (I had 1/2 tank when I brought it in) but I didn’t get to talk directly with the mechanic but rather the service advisor.